Radix cross Linux

Radix Linux distribution for embedded systems.

637 Commits   4 Branches   3 Tags
author: Andrey V.Kosteltsev <kx@radix.pro> 2016-10-21 13:44:16 +0000 committer: Andrey V.Kosteltsev <kx@radix.pro> 2016-10-21 13:44:16 +0000 commit: 4bd571dd5fcc01a76a9dcf297945dabf0e18d1e7 parent: 934bb1124a5b95b6f8a8bde48392545c0f932ce4
Commit Summary:
FFmpeg 3.1.4
Diffstat:
23 files changed, 19593 insertions, 0 deletions
diff --git a/app/ffmpeg/3.1.4-x86_32/Makefile b/app/ffmpeg/3.1.4-x86_32/Makefile
new file mode 100644
index 000000000..de312e60d
--- /dev/null
+++ b/app/ffmpeg/3.1.4-x86_32/Makefile
@@ -0,0 +1,324 @@
+
+COMPONENT_TARGETS  = $(HARDWARE_PC64)
+
+NEED_ABS_PATH      = true
+COMPONENT_IS_3PP   = true
+
+CREATE_X86_32_PACKAGE = true
+
+
+include ../../../build-system/constants.mk
+
+
+SOURCE_REQUIRES    = sources/packages/m/ffmpeg
+
+REQUIRES           = app/ffmpeg/3.1.4
+REQUIRES          += libs/alsa-lib/1.1.1-x86_32
+REQUIRES          += X11/libs/sdl/sdl/1.2.15-x86_32
+REQUIRES          += X11/libs/libva/1.7.2-x86_32
+REQUIRES          += X11/libs/libvdpau/1.1.1-x86_32
+REQUIRES          += app/jack/0.125.0-x86_32
+
+REQUIRES          += libs/gmp/6.1.0-x86_32
+REQUIRES          += net/gnutls/3.4.8-x86_32
+REQUIRES          += libs/libtasn1/4.7-x86_32
+REQUIRES          += libs/ladspa/1.13-x86_32
+REQUIRES          += libs/libass/0.13.3-x86_32
+REQUIRES          += libs/libbluray/0.9.3-x86_32
+REQUIRES          += libs/libcaca/0.99.19-x86_32
+REQUIRES          += app/celt/0.11.3-x86_32
+REQUIRES          += app/faac/1.28-x86_32
+REQUIRES          += libs/fdk-aac/0.1.4-x86_32
+REQUIRES          += X11/libs/fontconfig/2.11.95-x86_32
+REQUIRES          += libs/freetype/2.6.3-x86_32
+REQUIRES          += libs/fribidi/0.19.7-x86_32
+REQUIRES          += libs/gsm/1.0.13-x86_32
+REQUIRES          += libs/libiec61883/1.2.0-x86_32
+REQUIRES          += libs/libmodplug/0.8.8.5-x86_32
+REQUIRES          += libs/lame/3.99.5-x86_32
+REQUIRES          += libs/opencore-amr/0.1.3-x86_32
+REQUIRES          += libs/openh264/1.6.0-x86_32
+REQUIRES          += app/openjpeg/1.5.2-x86_32
+REQUIRES          += libs/opus/1.1.2-x86_32
+REQUIRES          += libs/pulseaudio/9.0-x86_32
+REQUIRES          += app/rtmpdump/2.4-x86_32
+REQUIRES          += libs/schroedinger/1.0.11-x86_32
+REQUIRES          += libs/libsoxr/0.1.2-x86_32
+REQUIRES          += libs/speex/1.2rc2-x86_32
+REQUIRES          += libs/libssh/0.7.3-x86_32
+REQUIRES          += libs/libtheora/1.1.1-x86_32
+REQUIRES          += app/twolame/0.3.13-x86_32
+REQUIRES          += libs/v4l-utils/1.10.1-x86_32
+REQUIRES          += libs/libvidstab/1.1-x86_32
+REQUIRES          += libs/vo-amrwbenc/0.1.3-x86_32
+REQUIRES          += libs/libvorbis/1.3.5-x86_32
+REQUIRES          += libs/libvpx/1.5.0-x86_32
+REQUIRES          += libs/wavpack/4.75.2-x86_32
+REQUIRES          += libs/libwebp/0.5.0-x86_32
+REQUIRES          += libs/libx264/0.148.20160920-x86_32
+REQUIRES          += libs/x265/2.1-x86_32
+REQUIRES          += libs/xvidcore/1.3.4-x86_32
+REQUIRES          += libs/zeromq/4.1.4-x86_32
+REQUIRES          += libs/zvbi/0.2.35-x86_32
+REQUIRES          += libs/netcdf/4.4.1-x86_32
+REQUIRES          += X11/X.org/xcb/libxcb/1.11.1-x86_32
+
+# ======= __END_OF_REQUIRES__ =======
+
+
+version            = 3.1.4
+tar_xz_archive     = $(SRC_PACKAGE_PATH)/packages/m/ffmpeg/ffmpeg-$(version).tar.xz
+SRC_ARCHIVE        = $(tar_xz_archive)
+SRC_DIR            = $(TARGET_BUILD_DIR)/ffmpeg-$(version)
+src_dir_name       = ffmpeg-$(version)
+src_done           = $(TARGET_BUILD_DIR)/.source_done
+
+PATCHES = PATCHES
+
+build_target       = $(TARGET_BUILD_DIR)/.build_done
+install_target     = $(TARGET_BUILD_DIR)/.install_done
+
+
+####### Targets
+
+PKG_GROUP = app
+
+#
+# *PKG_NAME & *PKG_VERSION shouldn't be a reference to value.
+#
+FFMPEG_32_PKG_NAME                = ffmpeg-x32
+FFMPEG_32_PKG_VERSION             = 0.11.3
+FFMPEG_32_PKG_ARCH                = $(TOOLCHAIN)
+FFMPEG_32_PKG_DISTRO_NAME         = $(DISTRO_NAME)
+FFMPEG_32_PKG_DISTRO_VERSION      = $(DISTRO_VERSION)
+FFMPEG_32_PKG_GROUP               = $(PKG_GROUP)
+###                                |---handy-ruler-------------------------------|
+FFMPEG_32_PKG_SHORT_DESCRIPTION   = FFmpeg collection
+FFMPEG_32_PKG_URL                 = $(BUG_URL)
+FFMPEG_32_PKG_LICENSE             = LGPLv2.1
+FFMPEG_32_PKG_DESCRIPTION_FILE    = $(TARGET_BUILD_DIR)/$(FFMPEG_32_PKG_NAME)-pkg-description
+FFMPEG_32_PKG_DESCRIPTION_FILE_IN = $(FFMPEG_32_PKG_NAME)-pkg-description.in
+FFMPEG_32_PKG_INSTALL_SCRIPT      = $(FFMPEG_32_PKG_NAME)-pkg-install.sh
+
+FFMPEG_32_PKG    = $(CURDIR)/$(TARGET_BUILD_DIR)/$(FFMPEG_32_PKG_NAME)-package
+
+pkg_basename     = $(FFMPEG_32_PKG_NAME)-$(FFMPEG_32_PKG_VERSION)-$(FFMPEG_32_PKG_ARCH)-$(FFMPEG_32_PKG_DISTRO_NAME)-$(FFMPEG_32_PKG_DISTRO_VERSION)
+
+pkg_archive      = $(TARGET_BUILD_DIR)/$(PKG_GROUP)/$(pkg_basename).$(pkg_arch_suffix)
+pkg_signature    = $(call sign-name,$(pkg_archive))
+pkg_description  = $(call desc-name,$(pkg_archive))
+products         = $(call pkg-files,$(pkg_archive))
+
+
+BUILD_TARGETS    = $(build_target)
+BUILD_TARGETS   += $(install_target)
+
+PRODUCT_TARGETS  = $(products)
+
+ROOTFS_TARGETS   = $(pkg_archive)
+
+
+include ../../../build-system/core.mk
+
+
+env_sysroot = DESTDIR=$(FFMPEG_32_PKG)
+
+
+ENABLE_X86_YASM = no
+
+
+TARGET_BIN_RPATH = /lib$(MULTILIB_X86_32_SUFFIX):/usr/lib$(MULTILIB_X86_32_SUFFIX)
+TARGET_LIB_RPATH = /lib$(MULTILIB_X86_32_SUFFIX):/usr/lib$(MULTILIB_X86_32_SUFFIX):/usr/lib/../lib$(MULTILIB_X86_32_SUFFIX)
+
+
+ARCH = i686
+
+
+extra_configure_switches  = --libdir=/usr/lib$(MULTILIB_X86_32_SUFFIX)
+extra_configure_switches += --docdir=/usr/share/doc/$(src_dir_name)
+extra_configure_switches += --mandir=/usr/share/man
+
+extra_configure_switches += --bindir=/usr/bin/32
+
+extra_configure_switches += --arch=$(ARCH)
+extra_configure_switches += --enable-cross-compile
+
+ifneq ($(filter $(HARDWARE),$(HARDWARE_PC64)),)
+ifneq ($(ENABLE_X86_YASM),yes)
+extra_configure_switches += --disable-yasm
+endif
+endif
+
+ifneq ($(filter $(HARDWARE),$(HARDWARE_CI20) $(HARDWARE_BT1)),)
+extra_configure_switches += --disable-mipsdsp
+extra_configure_switches += --disable-mipsdspr2
+endif
+
+extra_configure_switches += --target-os=linux
+extra_configure_switches += --nm='$(CROSS_PREFIX)nm -g'
+extra_configure_switches += --ar='$(CROSS_PREFIX)ar'
+extra_configure_switches += --as='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --ranlib='$(CROSS_PREFIX)ranlib'
+extra_configure_switches += --strip='$(CROSS_PREFIX)strip'
+extra_configure_switches += --yasmexe=/usr/bin/yasm
+
+extra_configure_switches += --cc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --cxx='$(CROSS_PREFIX)g++'
+extra_configure_switches += --objcc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --dep-cc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --ld='$(CROSS_PREFIX)gcc'
+
+
+extra_configure_switches += --extra-cflags='--sysroot=$(TARGET_DEST_DIR) -m32 $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-cxxflags='--sysroot=$(TARGET_DEST_DIR) -m32 $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-objcflags='--sysroot=$(TARGET_DEST_DIR) -m32 $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-ldflags='--sysroot=$(TARGET_DEST_DIR) -m32 -L$(TARGET_DEST_DIR)/lib$(MULTILIB_X86_32_SUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(MULTILIB_X86_32_SUFFIX)'
+extra_configure_switches += --extra-ldexeflags='--sysroot=$(TARGET_DEST_DIR) -m32 -L$(TARGET_DEST_DIR)/lib$(MULTILIB_X86_32_SUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(MULTILIB_X86_32_SUFFIX)'
+extra_configure_switches += --extra-ldlibflags='--sysroot=$(TARGET_DEST_DIR) -m32 -L$(TARGET_DEST_DIR)/lib$(MULTILIB_X86_32_SUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(MULTILIB_X86_32_SUFFIX)'
+extra_configure_switches += --enable-rpath
+
+
+extra_configure_switches += --host-cc=gcc
+extra_configure_switches += --host-cflags='-I/usr/include'
+extra_configure_switches += --host-cppflags='-I/usr/include'
+extra_configure_switches += --host-ld=gcc
+extra_configure_switches += --host-ldflags='-L/usr/lib$(BUILD_MULTILIB_SUFFIX)'
+extra_configure_switches += --host-os=linux
+
+extra_configure_switches += --enable-pic
+
+extra_configure_switches += --enable-shared
+
+
+#
+# Configure options:
+#
+extra_configure_switches += --enable-gpl
+extra_configure_switches += --enable-nonfree
+extra_configure_switches += --enable-version3
+extra_configure_switches += --disable-debug
+extra_configure_switches += --disable-stripping
+#
+# Component options:
+#
+extra_configure_switches += --enable-avresample
+#
+# External library support:
+#
+extra_configure_switches += --enable-gmp
+extra_configure_switches += --enable-gnutls
+extra_configure_switches += --enable-ladspa
+extra_configure_switches += --enable-libass
+extra_configure_switches += --enable-libbluray
+extra_configure_switches += --enable-libcaca
+extra_configure_switches += --enable-libcelt
+extra_configure_switches += --enable-libfaac
+extra_configure_switches += --enable-libfdk-aac
+extra_configure_switches += --enable-libfontconfig
+extra_configure_switches += --enable-libfreetype
+extra_configure_switches += --enable-libfribidi
+extra_configure_switches += --enable-libgsm
+extra_configure_switches += --enable-libiec61883
+extra_configure_switches += --enable-libmodplug
+extra_configure_switches += --enable-libmp3lame
+extra_configure_switches += --enable-libopencore-amrnb
+extra_configure_switches += --enable-libopencore-amrwb
+extra_configure_switches += --enable-libopenh264
+extra_configure_switches += --enable-libopenjpeg
+extra_configure_switches += --enable-libopus
+extra_configure_switches += --enable-libpulse
+extra_configure_switches += --enable-librtmp
+extra_configure_switches += --enable-libschroedinger
+extra_configure_switches += --enable-libsoxr
+extra_configure_switches += --enable-libspeex
+extra_configure_switches += --enable-libssh
+extra_configure_switches += --enable-libtheora
+extra_configure_switches += --enable-libtwolame
+extra_configure_switches += --enable-libv4l2
+extra_configure_switches += --enable-libvidstab
+extra_configure_switches += --enable-libvo-amrwbenc
+extra_configure_switches += --enable-libvorbis
+extra_configure_switches += --enable-libvpx
+extra_configure_switches += --enable-libwavpack
+extra_configure_switches += --enable-libwebp
+extra_configure_switches += --enable-libx264
+extra_configure_switches += --enable-libx265
+extra_configure_switches += --enable-libxcb
+extra_configure_switches += --enable-libxcb-shm
+extra_configure_switches += --enable-libxcb-xfixes
+extra_configure_switches += --enable-libxcb-shape
+extra_configure_switches += --enable-libxvid
+extra_configure_switches += --enable-libzmq
+extra_configure_switches += --enable-libzvbi
+extra_configure_switches += --enable-netcdf
+extra_configure_switches += --enable-opengl
+extra_configure_switches += --enable-x11grab
+
+
+CPPFLAGS += -Wno-deprecated-declarations -Wno-unused-but-set-variable
+CPPFLAGS += -Wno-unused-result -Wno-strict-overflow -Wno-discarded-qualifiers
+CPPFLAGS += -Wno-array-bounds -Wno-unused-function -Wno-undef
+
+
+####### Dependencies
+
+$(src_done): $(SRC_ARCHIVE) $(PATCHES_DEP)
+	$(UNPACK_SRC_ARCHIVE)
+	$(APPLY_PATCHES)
+	@touch $@
+
+$(build_target): $(src_done)
+	@cd $(SRC_DIR) && \
+	  $(BUILD_ENVIRONMENT) ./configure \
+	  --prefix=/usr               \
+	  $(extra_configure_switches)
+	@cd $(SRC_DIR) && $(BUILD_ENVIRONMENT) $(MAKE)
+	@touch $@
+
+$(install_target): $(build_target)
+	@mkdir -p $(FFMPEG_32_PKG)
+	@cd $(SRC_DIR) && $(BUILD_ENVIRONMENT) $(MAKE) -j1 install $(env_sysroot)
+	@rm -rf $(FFMPEG_32_PKG)/usr/include
+	@rm -rf $(FFMPEG_32_PKG)/usr/share
+	# ======= remove target path from target pkg-config *.pc files =======
+	@( cd $(FFMPEG_32_PKG)/usr/lib$(MULTILIB_X86_32_SUFFIX)/pkgconfig ; \
+	   sed -i "s,$(TARGET_DEST_DIR),,g" libavcodec.pc libavdevice.pc libavfilter.pc     \
+	                                    libavformat.pc libavresample.pc libavutil.pc    \
+	                                    libpostproc.pc libswresample.pc libswscale.pc ; \
+	 )
+	# ======= Install the same to $(TARGET_DEST_DIR) =======
+	$(call install-into-devenv, $(FFMPEG_32_PKG))
+	# ======= tune pkg-config *.pc search path to the target destination for development =======
+	@( cd $(TARGET_DEST_DIR)/usr/lib$(MULTILIB_X86_32_SUFFIX)/pkgconfig ; \
+	   sed -i "s,/usr,$(TARGET_DEST_DIR)/usr,g" libavcodec.pc libavdevice.pc libavfilter.pc     \
+	                                            libavformat.pc libavresample.pc libavutil.pc    \
+	                                            libpostproc.pc libswresample.pc libswscale.pc ; \
+	 )
+	# ======= Strip binaries =======
+	@( cd $(FFMPEG_32_PKG) ; \
+	   find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs $(STRIP) --strip-unneeded 2> /dev/null ; \
+	   find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs $(STRIP) --strip-unneeded 2> /dev/null ; \
+	   find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs $(STRIP) -g 2> /dev/null \
+	 )
+	@touch $@
+
+$(FFMPEG_32_PKG_DESCRIPTION_FILE): $(FFMPEG_32_PKG_DESCRIPTION_FILE_IN)
+	@cat $< | $(SED) -e "s/@VERSION@/$(version)/g" > $@
+
+$(pkg_signature)   : $(pkg_archive) ;
+$(pkg_description) : $(pkg_archive) ;
+
+$(pkg_archive): $(install_target) $(FFMPEG_32_PKG_DESCRIPTION_FILE) $(FFMPEG_32_PKG_INSTALL_SCRIPT)
+	@cp $(FFMPEG_32_PKG_DESCRIPTION_FILE) $(FFMPEG_32_PKG)/.DESCRIPTION
+	@cp $(FFMPEG_32_PKG_INSTALL_SCRIPT) $(FFMPEG_32_PKG)/.INSTALL
+	@$(BUILD_PKG_REQUIRES) $(FFMPEG_32_PKG)/.REQUIRES
+	@echo "pkgname=$(FFMPEG_32_PKG_NAME)"                            >  $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "pkgver=$(FFMPEG_32_PKG_VERSION)"                          >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "arch=$(FFMPEG_32_PKG_ARCH)"                               >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "distroname=$(FFMPEG_32_PKG_DISTRO_NAME)"                  >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "distrover=$(FFMPEG_32_PKG_DISTRO_VERSION)"                >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "group=$(FFMPEG_32_PKG_GROUP)"                             >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "short_description=\"$(FFMPEG_32_PKG_SHORT_DESCRIPTION)\"" >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "url=$(FFMPEG_32_PKG_URL)"                                 >> $(FFMPEG_32_PKG)/.PKGINFO ; \
+	 echo "license=$(FFMPEG_32_PKG_LICENSE)"                         >> $(FFMPEG_32_PKG)/.PKGINFO
+	@$(FAKEROOT) sh -c "cd $(FFMPEG_32_PKG) && chown -R root:root . && $(MAKE_PACKAGE) --linkadd yes .."
diff --git a/app/ffmpeg/3.1.4-x86_32/PATCHES b/app/ffmpeg/3.1.4-x86_32/PATCHES
new file mode 100644
index 000000000..88feaa6f3
--- /dev/null
+++ b/app/ffmpeg/3.1.4-x86_32/PATCHES
@@ -0,0 +1,3 @@
+
+../../../sources/packages/m/ffmpeg/patches/ffmpeg-3.1.4-openh264.patch  -p0
+../../../sources/packages/m/ffmpeg/patches/ffmpeg-3.1.4-configure.patch -p0
diff --git a/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-description.in b/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-description.in
new file mode 100644
index 000000000..9a5eb2a35
--- /dev/null
+++ b/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-description.in
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':'.
+
+          |-----handy-ruler------------------------------------------------------|
+ffmpeg-x32: ffmpeg-x32 @VERSION@ (x86_32 FFmpeg collection)
+ffmpeg-x32:
+ffmpeg-x32: FFmpeg is a collection of libraries and tools to process
+ffmpeg-x32: multimedia content such as audio, video, subtitles and
+ffmpeg-x32: related metadata.
+ffmpeg-x32:
+ffmpeg-x32:
+ffmpeg-x32:
+ffmpeg-x32: Homepage: http://ffmpeg.org
+ffmpeg-x32:
+ffmpeg-x32:
diff --git a/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-install.sh b/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-install.sh
new file mode 100755
index 000000000..8e8683cd6
--- /dev/null
+++ b/app/ffmpeg/3.1.4-x86_32/ffmpeg-x32-pkg-install.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# arg 1:  the new package version
+pre_install() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+post_install() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+# arg 2:  the old package version
+pre_update() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+# arg 2:  the old package version
+post_update() {
+  post_install
+}
+
+# arg 1:  the old package version
+pre_remove() {
+  /bin/true
+}
+
+# arg 1:  the old package version
+post_remove() {
+  /bin/true
+}
+
+
+operation=$1
+shift
+
+$operation $*
diff --git a/app/ffmpeg/3.1.4/Makefile b/app/ffmpeg/3.1.4/Makefile
new file mode 100644
index 000000000..f0509f1a2
--- /dev/null
+++ b/app/ffmpeg/3.1.4/Makefile
@@ -0,0 +1,391 @@
+
+COMPONENT_TARGETS  = $(HARDWARE_PC32)
+COMPONENT_TARGETS += $(HARDWARE_PC64)
+COMPONENT_TARGETS += $(HARDWARE_CB1X)
+COMPONENT_TARGETS += $(HARDWARE_CB2X)
+COMPONENT_TARGETS += $(HARDWARE_CB3X)
+COMPONENT_TARGETS += $(HARDWARE_FFRK3288)
+COMPONENT_TARGETS += $(HARDWARE_M201)
+COMPONENT_TARGETS += $(HARDWARE_MXQ)
+COMPONENT_TARGETS += $(HARDWARE_NIT6Q)
+COMPONENT_TARGETS += $(HARDWARE_OMAP5UEVM)
+COMPONENT_TARGETS += $(HARDWARE_DRA7XXEVM)
+COMPONENT_TARGETS += $(HARDWARE_CI20)
+COMPONENT_TARGETS += $(HARDWARE_BT1)
+
+
+NEED_ABS_PATH      = true
+COMPONENT_IS_3PP   = true
+
+
+include ../../../build-system/constants.mk
+
+
+SOURCE_REQUIRES    = sources/packages/m/ffmpeg
+
+REQUIRES           = libs/alsa-lib/1.1.1
+REQUIRES          += X11/libs/sdl/sdl/1.2.15
+REQUIRES          += X11/libs/libva/1.7.2
+REQUIRES          += X11/libs/libvdpau/1.1.1
+REQUIRES          += app/jack/0.125.0
+
+REQUIRES          += libs/gmp/6.1.0
+REQUIRES          += net/gnutls/3.4.8
+REQUIRES          += libs/libtasn1/4.7
+REQUIRES          += libs/ladspa/1.13
+REQUIRES          += libs/libass/0.13.3
+REQUIRES          += libs/libbluray/0.9.3
+REQUIRES          += libs/libcaca/0.99.19
+REQUIRES          += app/celt/0.11.3
+REQUIRES          += app/faac/1.28
+REQUIRES          += libs/fdk-aac/0.1.4
+REQUIRES          += X11/libs/fontconfig/2.11.95
+REQUIRES          += libs/freetype/2.6.3
+REQUIRES          += libs/fribidi/0.19.7
+REQUIRES          += libs/gsm/1.0.13
+REQUIRES          += libs/libiec61883/1.2.0
+REQUIRES          += libs/libmodplug/0.8.8.5
+REQUIRES          += libs/lame/3.99.5
+REQUIRES          += libs/opencore-amr/0.1.3
+REQUIRES          += libs/openh264/1.6.0
+REQUIRES          += app/openjpeg/1.5.2
+REQUIRES          += libs/opus/1.1.2
+REQUIRES          += libs/pulseaudio/9.0
+REQUIRES          += app/rtmpdump/2.4
+REQUIRES          += libs/schroedinger/1.0.11
+REQUIRES          += libs/libsoxr/0.1.2
+REQUIRES          += libs/speex/1.2rc2
+REQUIRES          += libs/libssh/0.7.3
+REQUIRES          += libs/libtheora/1.1.1
+REQUIRES          += app/twolame/0.3.13
+REQUIRES          += libs/v4l-utils/1.10.1
+REQUIRES          += libs/libvidstab/1.1
+REQUIRES          += libs/vo-amrwbenc/0.1.3
+REQUIRES          += libs/libvorbis/1.3.5
+REQUIRES          += libs/libvpx/1.5.0
+REQUIRES          += libs/wavpack/4.75.2
+REQUIRES          += libs/libwebp/0.5.0
+REQUIRES          += libs/libx264/0.148.20160920
+REQUIRES          += libs/x265/2.1
+REQUIRES          += libs/xvidcore/1.3.4
+REQUIRES          += libs/zeromq/4.1.4
+REQUIRES          += libs/zvbi/0.2.35
+REQUIRES          += libs/netcdf/4.4.1
+REQUIRES          += X11/X.org/xcb/libxcb/1.11.1
+
+# ======= __END_OF_REQUIRES__ =======
+
+
+version            = 3.1.4
+tar_xz_archive     = $(SRC_PACKAGE_PATH)/packages/m/ffmpeg/ffmpeg-$(version).tar.xz
+SRC_ARCHIVE        = $(tar_xz_archive)
+SRC_DIR            = $(TARGET_BUILD_DIR)/ffmpeg-$(version)
+src_dir_name       = ffmpeg-$(version)
+src_done           = $(TARGET_BUILD_DIR)/.source_done
+
+PATCHES = PATCHES
+
+build_dir          = $(TARGET_BUILD_DIR)/build
+build_target       = $(TARGET_BUILD_DIR)/.build_done
+install_target     = $(TARGET_BUILD_DIR)/.install_done
+
+
+####### Targets
+
+PKG_GROUP = app
+
+#
+# *PKG_NAME & *PKG_VERSION shouldn't be a reference to value.
+#
+FFMPEG_PKG_NAME                = ffmpeg
+FFMPEG_PKG_VERSION             = 3.1.4
+FFMPEG_PKG_ARCH                = $(TOOLCHAIN)
+FFMPEG_PKG_DISTRO_NAME         = $(DISTRO_NAME)
+FFMPEG_PKG_DISTRO_VERSION      = $(DISTRO_VERSION)
+FFMPEG_PKG_GROUP               = $(PKG_GROUP)
+###                             |---handy-ruler-------------------------------|
+FFMPEG_PKG_SHORT_DESCRIPTION   = FFmpeg collection
+FFMPEG_PKG_URL                 = $(BUG_URL)
+FFMPEG_PKG_LICENSE             = LGPLv2.1
+FFMPEG_PKG_DESCRIPTION_FILE    = $(TARGET_BUILD_DIR)/$(FFMPEG_PKG_NAME)-pkg-description
+FFMPEG_PKG_DESCRIPTION_FILE_IN = $(FFMPEG_PKG_NAME)-pkg-description.in
+FFMPEG_PKG_INSTALL_SCRIPT      = $(FFMPEG_PKG_NAME)-pkg-install.sh
+
+FFMPEG_PKG       = $(CURDIR)/$(TARGET_BUILD_DIR)/$(FFMPEG_PKG_NAME)-package
+
+pkg_basename     = $(FFMPEG_PKG_NAME)-$(FFMPEG_PKG_VERSION)-$(FFMPEG_PKG_ARCH)-$(FFMPEG_PKG_DISTRO_NAME)-$(FFMPEG_PKG_DISTRO_VERSION)
+
+pkg_archive      = $(TARGET_BUILD_DIR)/$(PKG_GROUP)/$(pkg_basename).$(pkg_arch_suffix)
+pkg_signature    = $(call sign-name,$(pkg_archive))
+pkg_description  = $(call desc-name,$(pkg_archive))
+products         = $(call pkg-files,$(pkg_archive))
+
+BUILD_TARGETS    = $(build_target)
+BUILD_TARGETS   += $(install_target)
+
+PRODUCT_TARGETS  = $(products)
+
+ROOTFS_TARGETS   = $(pkg_archive)
+
+
+include ../../../build-system/core.mk
+
+
+env_sysroot = DESTDIR=$(FFMPEG_PKG)
+
+
+ENABLE_X86_YASM = no
+
+
+TARGET_BIN_RPATH = /lib$(LIBSUFFIX):/usr/lib$(LIBSUFFIX)
+TARGET_LIB_RPATH = /lib$(LIBSUFFIX):/usr/lib$(LIBSUFFIX):/usr/lib/../lib$(LIBSUFFIX)
+
+
+#
+# NOTE: use generic CPU to avoid FFmpeg's desisions about CPU
+#
+ifneq ($(filter $(HARDWARE),$(HARDWARE_CB1X)      \
+                            $(HARDWARE_CB2X)      \
+                            $(HARDWARE_CB3X)      \
+                            $(HARDWARE_FFRK3288)  \
+                            $(HARDWARE_M201)      \
+                            $(HARDWARE_MXQ)       \
+                            $(HARDWARE_NIT6Q)     \
+                            $(HARDWARE_OMAP5UEVM) \
+                            $(HARDWARE_DRA7XXEVM)),)
+ARCH = arm
+endif
+ifneq ($(filter $(HARDWARE),$(HARDWARE_PC32)),)
+ARCH = i686
+endif
+ifneq ($(filter $(HARDWARE),$(HARDWARE_PC64)),)
+ARCH = x86_64
+endif
+ifneq ($(filter $(HARDWARE),$(HARDWARE_CI20) $(HARDWARE_BT1)),)
+ARCH = mips
+endif
+
+
+
+extra_configure_switches  = --libdir=/usr/lib$(LIBSUFFIX)
+extra_configure_switches += --docdir=/usr/share/doc/$(src_dir_name)
+extra_configure_switches += --mandir=/usr/share/man
+
+extra_configure_switches += --bindir=/usr/bin
+
+extra_configure_switches += --arch=$(ARCH)
+extra_configure_switches += --enable-cross-compile
+
+ifneq ($(filter $(HARDWARE),$(HARDWARE_PC32) $(HARDWARE_PC64)),)
+ifneq ($(ENABLE_X86_YASM),yes)
+extra_configure_switches += --disable-yasm
+endif
+endif
+
+ifneq ($(filter $(HARDWARE),$(HARDWARE_CI20) $(HARDWARE_BT1)),)
+extra_configure_switches += --disable-mipsdsp
+extra_configure_switches += --disable-mipsdspr2
+endif
+
+extra_configure_switches += --target-os=linux
+extra_configure_switches += --nm='$(CROSS_PREFIX)nm -g'
+extra_configure_switches += --ar='$(CROSS_PREFIX)ar'
+extra_configure_switches += --as='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --ranlib='$(CROSS_PREFIX)ranlib'
+extra_configure_switches += --strip='$(CROSS_PREFIX)strip'
+extra_configure_switches += --yasmexe=/usr/bin/yasm
+
+extra_configure_switches += --cc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --cxx='$(CROSS_PREFIX)g++'
+extra_configure_switches += --objcc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --dep-cc='$(CROSS_PREFIX)gcc'
+extra_configure_switches += --ld='$(CROSS_PREFIX)gcc'
+
+
+extra_configure_switches += --extra-cflags='--sysroot=$(TARGET_DEST_DIR) $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-cxxflags='--sysroot=$(TARGET_DEST_DIR) $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-objcflags='--sysroot=$(TARGET_DEST_DIR) $(CFLAGS) $(ARCH_FLAGS) $(ARCH_DEFS) $(HW_FLAGS) $(WARN_FLAGS)'
+extra_configure_switches += --extra-ldflags='--sysroot=$(TARGET_DEST_DIR) -L$(TARGET_DEST_DIR)/lib$(LIBSUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(LIBSUFFIX)'
+extra_configure_switches += --extra-ldexeflags='--sysroot=$(TARGET_DEST_DIR) -L$(TARGET_DEST_DIR)/lib$(LIBSUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(LIBSUFFIX)'
+extra_configure_switches += --extra-ldlibflags='--sysroot=$(TARGET_DEST_DIR) -L$(TARGET_DEST_DIR)/lib$(LIBSUFFIX) -L$(TARGET_DEST_DIR)/usr/lib$(LIBSUFFIX)'
+extra_configure_switches += --enable-rpath
+
+
+extra_configure_switches += --host-cc=gcc
+extra_configure_switches += --host-cflags='-I/usr/include'
+extra_configure_switches += --host-cppflags='-I/usr/include'
+extra_configure_switches += --host-ld=gcc
+extra_configure_switches += --host-ldflags='-L/usr/lib$(BUILD_MULTILIB_SUFFIX)'
+extra_configure_switches += --host-os=linux
+
+extra_configure_switches += --enable-pic
+
+extra_configure_switches += --enable-shared
+
+
+#
+# Configure options:
+#
+extra_configure_switches += --enable-gpl
+extra_configure_switches += --enable-nonfree
+extra_configure_switches += --enable-version3
+extra_configure_switches += --disable-debug
+extra_configure_switches += --disable-stripping
+#
+# Component options:
+#
+extra_configure_switches += --enable-avresample
+#
+# External library support:
+#
+extra_configure_switches += --enable-gmp
+extra_configure_switches += --enable-gnutls
+extra_configure_switches += --enable-ladspa
+extra_configure_switches += --enable-libass
+extra_configure_switches += --enable-libbluray
+extra_configure_switches += --enable-libcaca
+extra_configure_switches += --enable-libcelt
+extra_configure_switches += --enable-libfaac
+extra_configure_switches += --enable-libfdk-aac
+extra_configure_switches += --enable-libfontconfig
+extra_configure_switches += --enable-libfreetype
+extra_configure_switches += --enable-libfribidi
+extra_configure_switches += --enable-libgsm
+extra_configure_switches += --enable-libiec61883
+extra_configure_switches += --enable-libmodplug
+extra_configure_switches += --enable-libmp3lame
+extra_configure_switches += --enable-libopencore-amrnb
+extra_configure_switches += --enable-libopencore-amrwb
+extra_configure_switches += --enable-libopenh264
+extra_configure_switches += --enable-libopenjpeg
+extra_configure_switches += --enable-libopus
+extra_configure_switches += --enable-libpulse
+extra_configure_switches += --enable-librtmp
+extra_configure_switches += --enable-libschroedinger
+extra_configure_switches += --enable-libsoxr
+extra_configure_switches += --enable-libspeex
+extra_configure_switches += --enable-libssh
+extra_configure_switches += --enable-libtheora
+extra_configure_switches += --enable-libtwolame
+extra_configure_switches += --enable-libv4l2
+extra_configure_switches += --enable-libvidstab
+extra_configure_switches += --enable-libvo-amrwbenc
+extra_configure_switches += --enable-libvorbis
+extra_configure_switches += --enable-libvpx
+extra_configure_switches += --enable-libwavpack
+extra_configure_switches += --enable-libwebp
+extra_configure_switches += --enable-libx264
+extra_configure_switches += --enable-libx265
+extra_configure_switches += --enable-libxcb
+extra_configure_switches += --enable-libxcb-shm
+extra_configure_switches += --enable-libxcb-xfixes
+extra_configure_switches += --enable-libxcb-shape
+extra_configure_switches += --enable-libxvid
+extra_configure_switches += --enable-libzmq
+extra_configure_switches += --enable-libzvbi
+extra_configure_switches += --enable-netcdf
+extra_configure_switches += --enable-opengl
+extra_configure_switches += --enable-x11grab
+
+
+CPPFLAGS += -Wno-deprecated-declarations -Wno-unused-but-set-variable
+CPPFLAGS += -Wno-unused-result -Wno-strict-overflow -Wno-discarded-qualifiers
+CPPFLAGS += -Wno-array-bounds -Wno-unused-function -Wno-undef
+
+
+####### Dependencies
+
+$(src_done): $(SRC_ARCHIVE) $(PATCHES_DEP)
+	$(UNPACK_SRC_ARCHIVE)
+	$(APPLY_PATCHES)
+	@touch $@
+
+$(build_target): $(src_done)
+	@cd $(SRC_DIR) && \
+	  $(BUILD_ENVIRONMENT) ./configure \
+	  --prefix=/usr               \
+	  $(extra_configure_switches)
+	@cd $(SRC_DIR) && $(BUILD_ENVIRONMENT) $(MAKE)
+	@touch $@
+
+$(install_target): $(build_target)
+	@mkdir -p $(FFMPEG_PKG)
+	@cd $(SRC_DIR) && $(BUILD_ENVIRONMENT) $(MAKE) -j1 install $(env_sysroot)
+	# ======= Install Documentation =======
+	@if [ -d $(FFMPEG_PKG)/usr/share/man ]; then \
+	  ( cd $(FFMPEG_PKG)/usr/share/man ; \
+	    for manpagedir in `find . -type d -name "man*"` ; do \
+	      ( cd $$manpagedir ; \
+	        for eachpage in `find . -type l -maxdepth 1` ; do \
+	          ln -s `readlink $$eachpage`.gz $$eachpage.gz ; \
+	          rm $$eachpage ; \
+	        done ; \
+	        gzip -9 *.?  ; \
+	      ) \
+	    done \
+	  ) \
+	 fi
+	@mkdir -p $(FFMPEG_PKG)/usr/doc/$(src_dir_name)
+	@cp -a $(SRC_DIR)/COPYING* $(SRC_DIR)/LICENSE.md \
+	       $(FFMPEG_PKG)/usr/doc/$(src_dir_name)
+	@mkdir -p $(FFMPEG_PKG)/usr/share/doc/$(src_dir_name)/html
+	@( cd $(FFMPEG_PKG)/usr/share/doc/$(src_dir_name) ; \
+	   mv *.html html ; \
+	 )
+	@( cd $(SRC_DIR)/doc ; \
+	   cp -a bootstrap.min.css style.min.css default.css \
+	         $(FFMPEG_PKG)/usr/share/doc/$(src_dir_name)/html ; \
+	 )
+	@( cd $(SRC_DIR) ; \
+	   cp -a COPYING* CREDITS INSTALL.md LICENSE.md MAINTAINERS README.md RELEASE* VERSION \
+	         $(FFMPEG_PKG)/usr/share/doc/$(src_dir_name) ; \
+	 )
+	@( cd $(SRC_DIR) ; \
+	   if [ -r ChangeLog -a -s ChangeLog ]; then \
+	     DOCSDIR=`echo $(FFMPEG_PKG)/usr/share/doc/$(src_dir_name)` ; \
+	     cat ChangeLog | head -n 1000 > $$DOCSDIR/ChangeLog ; \
+	     touch -r ChangeLog $$DOCSDIR/ChangeLog ; \
+	   fi \
+	 )
+	# ======= remove target path from target pkg-config *.pc files =======
+	@( cd $(FFMPEG_PKG)/usr/lib$(LIBSUFFIX)/pkgconfig ; \
+	   sed -i "s,$(TARGET_DEST_DIR),,g" libavcodec.pc libavdevice.pc libavfilter.pc     \
+	                                    libavformat.pc libavresample.pc libavutil.pc    \
+	                                    libpostproc.pc libswresample.pc libswscale.pc ; \
+	 )
+	# ======= Install the same to $(TARGET_DEST_DIR) =======
+	$(call install-into-devenv, $(FFMPEG_PKG))
+	# ======= tune pkg-config *.pc search path to the target destination for development =======
+	@( cd $(TARGET_DEST_DIR)/usr/lib$(LIBSUFFIX)/pkgconfig ; \
+	   sed -i "s,/usr,$(TARGET_DEST_DIR)/usr,g" libavcodec.pc libavdevice.pc libavfilter.pc     \
+	                                            libavformat.pc libavresample.pc libavutil.pc    \
+	                                            libpostproc.pc libswresample.pc libswscale.pc ; \
+	 )
+	# ======= Strip binaries =======
+	@( cd $(FFMPEG_PKG) ; \
+	   find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs $(STRIP) --strip-unneeded 2> /dev/null ; \
+	   find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs $(STRIP) --strip-unneeded 2> /dev/null ; \
+	   find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs $(STRIP) -g 2> /dev/null \
+	 )
+	@touch $@
+
+$(FFMPEG_PKG_DESCRIPTION_FILE): $(FFMPEG_PKG_DESCRIPTION_FILE_IN)
+	@cat $< | $(SED) -e "s/@VERSION@/$(version)/g" > $@
+
+$(pkg_signature)   : $(pkg_archive) ;
+$(pkg_description) : $(pkg_archive) ;
+
+$(pkg_archive): $(install_target) $(FFMPEG_PKG_DESCRIPTION_FILE) $(FFMPEG_PKG_INSTALL_SCRIPT)
+	@cp $(FFMPEG_PKG_DESCRIPTION_FILE) $(FFMPEG_PKG)/.DESCRIPTION
+	@cp $(FFMPEG_PKG_INSTALL_SCRIPT) $(FFMPEG_PKG)/.INSTALL
+	@$(BUILD_PKG_REQUIRES) $(FFMPEG_PKG)/.REQUIRES
+	@echo "pkgname=$(FFMPEG_PKG_NAME)"                            >  $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "pkgver=$(FFMPEG_PKG_VERSION)"                          >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "arch=$(FFMPEG_PKG_ARCH)"                               >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "distroname=$(FFMPEG_PKG_DISTRO_NAME)"                  >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "distrover=$(FFMPEG_PKG_DISTRO_VERSION)"                >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "group=$(FFMPEG_PKG_GROUP)"                             >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "short_description=\"$(FFMPEG_PKG_SHORT_DESCRIPTION)\"" >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "url=$(FFMPEG_PKG_URL)"                                 >> $(FFMPEG_PKG)/.PKGINFO ; \
+	 echo "license=$(FFMPEG_PKG_LICENSE)"                         >> $(FFMPEG_PKG)/.PKGINFO
+	@$(FAKEROOT) sh -c "cd $(FFMPEG_PKG) && chown -R root:root . && $(MAKE_PACKAGE) --linkadd yes .."
diff --git a/app/ffmpeg/3.1.4/PATCHES b/app/ffmpeg/3.1.4/PATCHES
new file mode 100644
index 000000000..88feaa6f3
--- /dev/null
+++ b/app/ffmpeg/3.1.4/PATCHES
@@ -0,0 +1,3 @@
+
+../../../sources/packages/m/ffmpeg/patches/ffmpeg-3.1.4-openh264.patch  -p0
+../../../sources/packages/m/ffmpeg/patches/ffmpeg-3.1.4-configure.patch -p0
diff --git a/app/ffmpeg/3.1.4/ffmpeg-pkg-description.in b/app/ffmpeg/3.1.4/ffmpeg-pkg-description.in
new file mode 100644
index 000000000..54b80fb86
--- /dev/null
+++ b/app/ffmpeg/3.1.4/ffmpeg-pkg-description.in
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':'.
+
+      |-----handy-ruler------------------------------------------------------|
+ffmpeg: ffmpeg @VERSION@ (FFmpeg collection)
+ffmpeg:
+ffmpeg: FFmpeg is a collection of libraries and tools to process
+ffmpeg: multimedia content such as audio, video, subtitles and
+ffmpeg: related metadata.
+ffmpeg:
+ffmpeg:
+ffmpeg:
+ffmpeg: Homepage: http://ffmpeg.org
+ffmpeg:
+ffmpeg:
diff --git a/app/ffmpeg/3.1.4/ffmpeg-pkg-install.sh b/app/ffmpeg/3.1.4/ffmpeg-pkg-install.sh
new file mode 100755
index 000000000..b44c4e648
--- /dev/null
+++ b/app/ffmpeg/3.1.4/ffmpeg-pkg-install.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+
+# Preserve new files
+install_file() {
+  NEW="$1"
+  OLD="`dirname $NEW`/`basename $NEW .new`"
+  # If there's no file by that name, mv it over:
+  if [ ! -r $OLD ]; then
+    mv $NEW $OLD
+  elif [ "`cat $OLD | md5sum`" = "`cat $NEW | md5sum`" ]; then # toss the redundant copy
+    rm $NEW
+  fi
+  # Otherwise, we leave the .new copy for the admin to consider...
+}
+
+
+# arg 1:  the new package version
+pre_install() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+post_install() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+# arg 2:  the old package version
+pre_update() {
+  /bin/true
+}
+
+# arg 1:  the new package version
+# arg 2:  the old package version
+post_update() {
+  post_install
+}
+
+# arg 1:  the old package version
+pre_remove() {
+  /bin/true
+}
+
+# arg 1:  the old package version
+post_remove() {
+  /bin/true
+}
+
+
+operation=$1
+shift
+
+$operation $*
diff --git a/products/X11/Makefile b/products/X11/Makefile
index a6f0e710c..67d415191 100644
--- a/products/X11/Makefile
+++ b/products/X11/Makefile
@@ -1411,6 +1411,11 @@ ifeq ($(HARDWARE),$(HARDWARE_PC64))
 REQUIRES += X11/libs/sdl/sdl-ttf/2.0.11-x86_32
 endif
 
+REQUIRES += app/ffmpeg/3.1.4
+ifeq ($(HARDWARE),$(HARDWARE_PC64))
+REQUIRES += app/ffmpeg/3.1.4-x86_32
+endif
+
 
 #######
 ####### Development:
diff --git a/sources/packages/m/ffmpeg/Makefile b/sources/packages/m/ffmpeg/Makefile
new file mode 100644
index 000000000..8298517ef
--- /dev/null
+++ b/sources/packages/m/ffmpeg/Makefile
@@ -0,0 +1,62 @@
+
+COMPONENT_TARGETS = $(HARDWARE_NOARCH)
+
+
+include ../../../../build-system/constants.mk
+
+
+url         = $(DOWNLOAD_SERVER)/sources/packages/m/ffmpeg
+
+versions    = 3.1.4
+pkgname     = ffmpeg
+suffix      = tar.xz
+
+tarballs    = $(addsuffix .$(suffix), $(addprefix $(pkgname)-, $(versions)))
+sha1s       = $(addsuffix .sha1sum, $(tarballs))
+
+patches     = $(CURDIR)/patches/ffmpeg-3.1.4-openh264.patch
+patches    += $(CURDIR)/patches/ffmpeg-3.1.4-openjpeg.patch
+patches    += $(CURDIR)/patches/ffmpeg-3.1.4-pthreads.patch
+patches    += $(CURDIR)/patches/ffmpeg-3.1.4-configure.patch
+
+.NOTPARALLEL: $(patches)
+
+
+BUILD_TARGETS = $(tarballs) $(sha1s) $(patches)
+
+
+include ../../../../build-system/core.mk
+
+
+.PHONY: download_clean
+
+
+$(tarballs):
+	@echo -e "\n======= Downloading source tarballs =======" ; \
+	 for tarball in $(tarballs) ; do \
+	   echo "$(url)/$$tarball" | xargs -n 1 -P 100 wget $(WGET_OPTIONS) -i & \
+	 done ; wait
+
+$(sha1s): $(tarballs)
+	@for sha in $@ ; do \
+	   echo -e "\n======= Downloading '$$sha' signature =======\n" ; \
+	   echo "$(url)/$$sha" | xargs -n 1 -P 100 wget $(WGET_OPTIONS) -i & wait %1 ; \
+	   touch $$sha ; \
+	   echo -e "\n======= Check the '$$sha' sha1sum =======\n" ; \
+	   sha1sum --check $$sha ; ret="$$?" ; \
+	   if [ "$$ret" == "1" ]; then \
+	     echo -e "\n======= ERROR: Bad '$$sha' sha1sum =======\n" ; \
+	     exit 1 ; \
+	   fi ; \
+	 done
+
+$(patches): $(sha1s)
+	@echo -e "\n======= Create Patches =======\n" ; \
+	 ( cd create-3.1.4-openh264-patch  ; ./create.patch.sh ) ; \
+	 ( cd create-3.1.4-openjpeg-patch  ; ./create.patch.sh ) ; \
+	 ( cd create-3.1.4-pthreads-patch  ; ./create.patch.sh ) ; \
+	 ( cd create-3.1.4-configure-patch ; ./create.patch.sh ) ; \
+	 echo -e "\n"
+
+download_clean:
+	@rm -f $(tarballs) $(sha1s) $(patches)
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/create.patch.sh b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/create.patch.sh
new file mode 100755
index 000000000..a843e3add
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/create.patch.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+VERSION=3.1.4
+
+tar --files-from=file.list -xJvf ../ffmpeg-$VERSION.tar.xz
+mv ffmpeg-$VERSION ffmpeg-$VERSION-orig
+
+cp -rf ./ffmpeg-$VERSION-new ./ffmpeg-$VERSION
+
+diff -b --unified -Nr  ffmpeg-$VERSION-orig  ffmpeg-$VERSION > ffmpeg-$VERSION-configure.patch
+
+mv ffmpeg-$VERSION-configure.patch ../patches
+
+rm -rf ./ffmpeg-$VERSION
+rm -rf ./ffmpeg-$VERSION-orig
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/ffmpeg-3.1.4-new/configure b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/ffmpeg-3.1.4-new/configure
new file mode 100755
index 000000000..e05a6c593
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/ffmpeg-3.1.4-new/configure
@@ -0,0 +1,6769 @@
+#!/bin/sh
+#
+# FFmpeg configure script
+#
+# Copyright (c) 2000-2002 Fabrice Bellard
+# Copyright (c) 2005-2008 Diego Biurrun
+# Copyright (c) 2005-2008 Mans Rullgard
+#
+
+# Prevent locale nonsense from breaking basic text processing.
+LC_ALL=C
+export LC_ALL
+
+# make sure we are running under a compatible shell
+# try to make this part work with most shells
+
+try_exec(){
+    echo "Trying shell $1"
+    type "$1" > /dev/null 2>&1 && exec "$@"
+}
+
+unset foo
+(: ${foo%%bar}) 2> /dev/null
+E1="$?"
+
+(: ${foo?}) 2> /dev/null
+E2="$?"
+
+if test "$E1" != 0 || test "$E2" = 0; then
+    echo "Broken shell detected.  Trying alternatives."
+    export FF_CONF_EXEC
+    if test "0$FF_CONF_EXEC" -lt 1; then
+        FF_CONF_EXEC=1
+        try_exec bash "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 2; then
+        FF_CONF_EXEC=2
+        try_exec ksh "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 3; then
+        FF_CONF_EXEC=3
+        try_exec /usr/xpg4/bin/sh "$0" "$@"
+    fi
+    echo "No compatible shell script interpreter found."
+    echo "This configure script requires a POSIX-compatible shell"
+    echo "such as bash or ksh."
+    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
+    echo "Instead, install a working POSIX-compatible shell."
+    echo "Disabling this configure test will create a broken FFmpeg."
+    if test "$BASH_VERSION" = '2.04.0(1)-release'; then
+        echo "This bash version ($BASH_VERSION) is broken on your platform."
+        echo "Upgrade to a later version if available."
+    fi
+    exit 1
+fi
+
+test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
+
+show_help(){
+    cat <<EOF
+Usage: configure [options]
+Options: [defaults in brackets after descriptions]
+
+Help options:
+  --help                   print this message
+  --list-decoders          show all available decoders
+  --list-encoders          show all available encoders
+  --list-hwaccels          show all available hardware accelerators
+  --list-demuxers          show all available demuxers
+  --list-muxers            show all available muxers
+  --list-parsers           show all available parsers
+  --list-protocols         show all available protocols
+  --list-bsfs              show all available bitstream filters
+  --list-indevs            show all available input devices
+  --list-outdevs           show all available output devices
+  --list-filters           show all available filters
+
+Standard options:
+  --logfile=FILE           log tests and output to FILE [config.log]
+  --disable-logging        do not log configure debug information
+  --fatal-warnings         fail if any configure warning is generated
+  --prefix=PREFIX          install in PREFIX [$prefix]
+  --bindir=DIR             install binaries in DIR [PREFIX/bin]
+  --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
+  --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
+  --libdir=DIR             install libs in DIR [PREFIX/lib]
+  --shlibdir=DIR           install shared libs in DIR [LIBDIR]
+  --incdir=DIR             install includes in DIR [PREFIX/include]
+  --mandir=DIR             install man page in DIR [PREFIX/share/man]
+  --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
+  --enable-rpath           use rpath to allow installing libraries in paths
+                           not part of the dynamic linker search path
+                           use rpath when linking programs [USE WITH CARE]
+  --install-name-dir=DIR   Darwin directory name for installed targets
+
+Licensing options:
+  --enable-gpl             allow use of GPL code, the resulting libs
+                           and binaries will be under GPL [no]
+  --enable-version3        upgrade (L)GPL to version 3 [no]
+  --enable-nonfree         allow use of nonfree code, the resulting libs
+                           and binaries will be unredistributable [no]
+
+Configuration options:
+  --disable-static         do not build static libraries [no]
+  --enable-shared          build shared libraries [no]
+  --enable-small           optimize for size instead of speed
+  --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
+  --enable-gray            enable full grayscale support (slower color)
+  --disable-swscale-alpha  disable alpha channel support in swscale
+  --disable-all            disable building components, libraries and programs
+  --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
+  --enable-raise-major     increase major version numbers in sonames [no]
+
+Program options:
+  --disable-programs       do not build command line programs
+  --disable-ffmpeg         disable ffmpeg build
+  --disable-ffplay         disable ffplay build
+  --disable-ffprobe        disable ffprobe build
+  --disable-ffserver       disable ffserver build
+
+Documentation options:
+  --disable-doc            do not build documentation
+  --disable-htmlpages      do not build HTML documentation pages
+  --disable-manpages       do not build man documentation pages
+  --disable-podpages       do not build POD documentation pages
+  --disable-txtpages       do not build text documentation pages
+
+Component options:
+  --disable-avdevice       disable libavdevice build
+  --disable-avcodec        disable libavcodec build
+  --disable-avformat       disable libavformat build
+  --disable-swresample     disable libswresample build
+  --disable-swscale        disable libswscale build
+  --disable-postproc       disable libpostproc build
+  --disable-avfilter       disable libavfilter build
+  --enable-avresample      enable libavresample build [no]
+  --disable-pthreads       disable pthreads [autodetect]
+  --disable-w32threads     disable Win32 threads [autodetect]
+  --disable-os2threads     disable OS/2 threads [autodetect]
+  --disable-network        disable network support [no]
+  --disable-dct            disable DCT code
+  --disable-dwt            disable DWT code
+  --disable-error-resilience disable error resilience code
+  --disable-lsp            disable LSP code
+  --disable-lzo            disable LZO decoder code
+  --disable-mdct           disable MDCT code
+  --disable-rdft           disable RDFT code
+  --disable-fft            disable FFT code
+  --disable-faan           disable floating point AAN (I)DCT code
+  --disable-pixelutils     disable pixel utils in libavutil
+
+Individual component options:
+  --disable-everything     disable all components listed below
+  --disable-encoder=NAME   disable encoder NAME
+  --enable-encoder=NAME    enable encoder NAME
+  --disable-encoders       disable all encoders
+  --disable-decoder=NAME   disable decoder NAME
+  --enable-decoder=NAME    enable decoder NAME
+  --disable-decoders       disable all decoders
+  --disable-hwaccel=NAME   disable hwaccel NAME
+  --enable-hwaccel=NAME    enable hwaccel NAME
+  --disable-hwaccels       disable all hwaccels
+  --disable-muxer=NAME     disable muxer NAME
+  --enable-muxer=NAME      enable muxer NAME
+  --disable-muxers         disable all muxers
+  --disable-demuxer=NAME   disable demuxer NAME
+  --enable-demuxer=NAME    enable demuxer NAME
+  --disable-demuxers       disable all demuxers
+  --enable-parser=NAME     enable parser NAME
+  --disable-parser=NAME    disable parser NAME
+  --disable-parsers        disable all parsers
+  --enable-bsf=NAME        enable bitstream filter NAME
+  --disable-bsf=NAME       disable bitstream filter NAME
+  --disable-bsfs           disable all bitstream filters
+  --enable-protocol=NAME   enable protocol NAME
+  --disable-protocol=NAME  disable protocol NAME
+  --disable-protocols      disable all protocols
+  --enable-indev=NAME      enable input device NAME
+  --disable-indev=NAME     disable input device NAME
+  --disable-indevs         disable input devices
+  --enable-outdev=NAME     enable output device NAME
+  --disable-outdev=NAME    disable output device NAME
+  --disable-outdevs        disable output devices
+  --disable-devices        disable all devices
+  --enable-filter=NAME     enable filter NAME
+  --disable-filter=NAME    disable filter NAME
+  --disable-filters        disable all filters
+
+External library support:
+
+  Using any of the following switches will allow FFmpeg to link to the
+  corresponding external library. All the components depending on that library
+  will become enabled, if all their other dependencies are met and they are not
+  explicitly disabled. E.g. --enable-libwavpack will enable linking to
+  libwavpack and allow the libwavpack encoder to be built, unless it is
+  specifically disabled with --disable-encoder=libwavpack.
+
+  Note that only the system libraries are auto-detected. All the other external
+  libraries must be explicitly enabled.
+
+  Also note that the following help text describes the purpose of the libraries
+  themselves, not all their features will necessarily be usable by FFmpeg.
+
+  --enable-avisynth        enable reading of AviSynth script files [no]
+  --disable-bzlib          disable bzlib [autodetect]
+  --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
+  --enable-frei0r          enable frei0r video filtering [no]
+  --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
+                           if openssl, librtmp or gmp is not used [no]
+  --enable-gmp             enable gmp, needed for rtmp(t)e support
+                           if openssl or librtmp is not used [no]
+  --enable-gnutls          enable gnutls, needed for https support
+                           if openssl is not used [no]
+  --disable-iconv          disable iconv [autodetect]
+  --enable-jni             enable JNI support [no]
+  --enable-ladspa          enable LADSPA audio filtering [no]
+  --enable-libass          enable libass subtitles rendering,
+                           needed for subtitles and ass filter [no]
+  --enable-libbluray       enable BluRay reading using libbluray [no]
+  --enable-libbs2b         enable bs2b DSP library [no]
+  --enable-libcaca         enable textual display using libcaca [no]
+  --enable-libcelt         enable CELT decoding via libcelt [no]
+  --enable-libcdio         enable audio CD grabbing with libcdio [no]
+  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
+                           and libraw1394 [no]
+  --enable-libebur128      enable libebur128 for EBU R128 measurement,
+                           needed for loudnorm filter [no]
+  --enable-libfaac         enable AAC encoding via libfaac [no]
+  --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
+  --enable-libflite        enable flite (voice synthesis) support via libflite [no]
+  --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
+  --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
+  --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
+  --enable-libgme          enable Game Music Emu via libgme [no]
+  --enable-libgsm          enable GSM de/encoding via libgsm [no]
+  --enable-libiec61883     enable iec61883 via libiec61883 [no]
+  --enable-libilbc         enable iLBC de/encoding via libilbc [no]
+  --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
+  --enable-libmodplug      enable ModPlug via libmodplug [no]
+  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
+  --enable-libnut          enable NUT (de)muxing via libnut,
+                           native (de)muxer exists [no]
+  --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
+  --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
+  --enable-libopencv       enable video filtering via libopencv [no]
+  --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
+  --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
+  --enable-libopus         enable Opus de/encoding via libopus [no]
+  --enable-libpulse        enable Pulseaudio input via libpulse [no]
+  --enable-librubberband   enable rubberband needed for rubberband filter [no]
+  --enable-librtmp         enable RTMP[E] support via librtmp [no]
+  --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
+  --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
+  --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
+  --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
+  --enable-libsoxr         enable Include libsoxr resampling [no]
+  --enable-libspeex        enable Speex de/encoding via libspeex [no]
+  --enable-libssh          enable SFTP protocol via libssh [no]
+  --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
+  --enable-libtheora       enable Theora encoding via libtheora [no]
+  --enable-libtwolame      enable MP2 encoding via libtwolame [no]
+  --enable-libv4l2         enable libv4l2/v4l-utils [no]
+  --enable-libvidstab      enable video stabilization using vid.stab [no]
+  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
+  --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
+                           native implementation exists [no]
+  --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
+  --enable-libwavpack      enable wavpack encoding via libwavpack [no]
+  --enable-libwebp         enable WebP encoding via libwebp [no]
+  --enable-libx264         enable H.264 encoding via x264 [no]
+  --enable-libx265         enable HEVC encoding via x265 [no]
+  --enable-libxavs         enable AVS encoding via xavs [no]
+  --enable-libxcb          enable X11 grabbing using XCB [autodetect]
+  --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
+  --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
+  --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
+  --enable-libxvid         enable Xvid encoding via xvidcore,
+                           native MPEG-4/Xvid encoder exists [no]
+  --enable-libzimg         enable z.lib, needed for zscale filter [no]
+  --enable-libzmq          enable message passing via libzmq [no]
+  --enable-libzvbi         enable teletext support via libzvbi [no]
+  --disable-lzma           disable lzma [autodetect]
+  --enable-decklink        enable Blackmagic DeckLink I/O support [no]
+  --enable-mediacodec      enable Android MediaCodec support [no]
+  --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
+  --enable-openal          enable OpenAL 1.1 capture support [no]
+  --enable-opencl          enable OpenCL code
+  --enable-opengl          enable OpenGL rendering [no]
+  --enable-openssl         enable openssl, needed for https support
+                           if gnutls is not used [no]
+  --disable-schannel       disable SChannel SSP, needed for TLS support on
+                           Windows if openssl and gnutls are not used [autodetect]
+  --disable-sdl            disable sdl [autodetect]
+  --disable-securetransport disable Secure Transport, needed for TLS support
+                           on OSX if openssl and gnutls are not used [autodetect]
+  --enable-x11grab         enable X11 grabbing (legacy) [no]
+  --disable-xlib           disable xlib [autodetect]
+  --disable-zlib           disable zlib [autodetect]
+
+  The following libraries provide various hardware acceleration features:
+  --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
+  --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
+  --enable-cuvid           enable Nvidia CUVID support [autodetect]
+  --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
+  --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
+  --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
+  --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
+  --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
+  --enable-nvenc           enable Nvidia video encoding code [no]
+  --enable-omx             enable OpenMAX IL code [no]
+  --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
+  --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
+  --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
+  --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
+  --disable-videotoolbox   disable VideoToolbox code [autodetect]
+
+Toolchain options:
+  --arch=ARCH              select architecture [$arch]
+  --cpu=CPU                select the minimum required CPU (affects
+                           instruction selection, may crash on older CPUs)
+  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
+  --progs-suffix=SUFFIX    program name suffix []
+  --enable-cross-compile   assume a cross-compiler is used
+  --sysroot=PATH           root of cross-build tree
+  --sysinclude=PATH        location of cross-build system headers
+  --target-os=OS           compiler targets OS [$target_os]
+  --target-exec=CMD        command to run executables on target
+  --target-path=DIR        path to view of build directory on target
+  --target-samples=DIR     path to samples directory on target
+  --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
+  --toolchain=NAME         set tool defaults according to NAME
+  --nm=NM                  use nm tool NM [$nm_default]
+  --ar=AR                  use archive tool AR [$ar_default]
+  --as=AS                  use assembler AS [$as_default]
+  --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
+  --strip=STRIP            use strip tool STRIP [$strip_default]
+  --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
+  --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
+  --cc=CC                  use C compiler CC [$cc_default]
+  --cxx=CXX                use C compiler CXX [$cxx_default]
+  --objcc=OCC              use ObjC compiler OCC [$cc_default]
+  --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
+  --ld=LD                  use linker LD [$ld_default]
+  --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
+  --pkg-config-flags=FLAGS pass additional flags to pkgconf []
+  --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
+  --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
+  --host-cc=HOSTCC         use host C compiler HOSTCC
+  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
+  --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
+  --host-ld=HOSTLD         use host linker HOSTLD
+  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
+  --host-libs=HLIBS        use libs HLIBS when linking for host
+  --host-os=OS             compiler host OS [$target_os]
+  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
+  --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
+  --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
+  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
+  --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
+  --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
+  --extra-libs=ELIBS       add ELIBS [$ELIBS]
+  --extra-version=STRING   version string suffix []
+  --optflags=OPTFLAGS      override optimization-related compiler flags
+  --build-suffix=SUFFIX    library name suffix []
+  --enable-pic             build position-independent code
+  --enable-thumb           compile for Thumb instruction set
+  --enable-lto             use link-time optimization
+  --env="ENV=override"     override the environment variables
+
+Advanced options (experts only):
+  --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
+  --custom-allocator=NAME  use a supported custom allocator
+  --disable-symver         disable symbol versioning
+  --enable-hardcoded-tables use hardcoded tables instead of runtime generation
+  --disable-safe-bitstream-reader
+                           disable buffer boundary checking in bitreaders
+                           (faster, but may crash)
+  --enable-memalign-hack   emulate memalign, interferes with memory debuggers
+  --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
+
+Optimization options (experts only):
+  --disable-asm            disable all assembly optimizations
+  --disable-altivec        disable AltiVec optimizations
+  --disable-vsx            disable VSX optimizations
+  --disable-power8         disable POWER8 optimizations
+  --disable-amd3dnow       disable 3DNow! optimizations
+  --disable-amd3dnowext    disable 3DNow! extended optimizations
+  --disable-mmx            disable MMX optimizations
+  --disable-mmxext         disable MMXEXT optimizations
+  --disable-sse            disable SSE optimizations
+  --disable-sse2           disable SSE2 optimizations
+  --disable-sse3           disable SSE3 optimizations
+  --disable-ssse3          disable SSSE3 optimizations
+  --disable-sse4           disable SSE4 optimizations
+  --disable-sse42          disable SSE4.2 optimizations
+  --disable-avx            disable AVX optimizations
+  --disable-xop            disable XOP optimizations
+  --disable-fma3           disable FMA3 optimizations
+  --disable-fma4           disable FMA4 optimizations
+  --disable-avx2           disable AVX2 optimizations
+  --disable-aesni          disable AESNI optimizations
+  --disable-armv5te        disable armv5te optimizations
+  --disable-armv6          disable armv6 optimizations
+  --disable-armv6t2        disable armv6t2 optimizations
+  --disable-vfp            disable VFP optimizations
+  --disable-neon           disable NEON optimizations
+  --disable-inline-asm     disable use of inline assembly
+  --disable-yasm           disable use of nasm/yasm assembly
+  --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
+  --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
+  --disable-msa            disable MSA optimizations
+  --disable-mipsfpu        disable floating point MIPS optimizations
+  --disable-mmi            disable Loongson SIMD optimizations
+  --disable-fast-unaligned consider unaligned accesses slow
+
+Developer options (useful when working on FFmpeg itself):
+  --disable-debug          disable debugging symbols
+  --enable-debug=LEVEL     set the debug level [$debuglevel]
+  --disable-optimizations  disable compiler optimizations
+  --enable-extra-warnings  enable more compiler warnings
+  --disable-stripping      disable stripping of executables and shared libraries
+  --assert-level=level     0(default), 1 or 2, amount of assertion testing,
+                           2 causes a slowdown at runtime.
+  --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
+  --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
+                           leaks and errors, using the specified valgrind binary.
+                           Cannot be combined with --target-exec
+  --enable-ftrapv          Trap arithmetic overflows
+  --samples=PATH           location of test samples for FATE, if not set use
+                           \$FATE_SAMPLES at make invocation time.
+  --enable-neon-clobber-test check NEON registers for clobbering (should be
+                           used only for debugging purposes)
+  --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
+                           should be used only for debugging purposes)
+  --enable-random          randomly enable/disable components
+  --disable-random
+  --enable-random=LIST     randomly enable/disable specific components or
+  --disable-random=LIST    component groups. LIST is a comma-separated list
+                           of NAME[:PROB] entries where NAME is a component
+                           (group) and PROB the probability associated with
+                           NAME (default 0.5).
+  --random-seed=VALUE      seed value for --enable/disable-random
+  --disable-valgrind-backtrace do not print a backtrace under Valgrind
+                           (only applies to --disable-optimizations builds)
+
+NOTE: Object files are built at the place where configure is launched.
+EOF
+  exit 0
+}
+
+quotes='""'
+if test -t 1 && which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+    if test -n "$ncolors" && test $ncolors -ge 8; then
+        bold_color=$(tput bold)
+        warn_color=$(tput setaf 3)
+        error_color=$(tput setaf 1)
+        reset_color=$(tput sgr0)
+    fi
+    # 72 used instead of 80 since that's the default of pr
+    ncols=$(tput cols)
+fi
+: ${ncols:=72}
+
+log(){
+    echo "$@" >> $logfile
+}
+
+log_file(){
+    log BEGIN $1
+    pr -n -t $1 >> $logfile
+    log END $1
+}
+
+warn(){
+    log "WARNING: $*"
+    WARNINGS="${WARNINGS}WARNING: $*\n"
+}
+
+die(){
+    log "$@"
+    echo "$error_color$bold_color$@$reset_color"
+    cat <<EOF
+
+If you think configure made a mistake, make sure you are using the latest
+version from Git.  If the latest version fails, report the problem to the
+ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
+EOF
+    if disabled logging; then
+        cat <<EOF
+Rerun configure with logging enabled (do not use --disable-logging), and
+include the log this produces with your report.
+EOF
+    else
+        cat <<EOF
+Include the log file "$logfile" produced by configure as this will help
+solve the problem.
+EOF
+    fi
+    exit 1
+}
+
+# Avoid locale weirdness, besides we really just want to translate ASCII.
+toupper(){
+    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
+}
+
+tolower(){
+    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
+}
+
+c_escape(){
+    echo "$*" | sed 's/["\\]/\\\0/g'
+}
+
+sh_quote(){
+    v=$(echo "$1" | sed "s/'/'\\\\''/g")
+    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
+    echo "$v"
+}
+
+cleanws(){
+    echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
+}
+
+filter(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) echo $v ;; esac"
+    done
+}
+
+filter_out(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) ;; *) echo $v ;; esac"
+    done
+}
+
+map(){
+    m=$1
+    shift
+    for v; do eval $m; done
+}
+
+add_suffix(){
+    suffix=$1
+    shift
+    for v; do echo ${v}${suffix}; done
+}
+
+set_all(){
+    value=$1
+    shift
+    for var in $*; do
+        eval $var=$value
+    done
+}
+
+set_weak(){
+    value=$1
+    shift
+    for var; do
+        eval : \${$var:=$value}
+    done
+}
+
+sanitize_var_name(){
+    echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
+}
+
+set_safe(){
+    var=$1
+    shift
+    eval $(sanitize_var_name "$var")='$*'
+}
+
+get_safe(){
+    eval echo \$$(sanitize_var_name "$1")
+}
+
+pushvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:=0}
+        eval ${pvar}_${level}="\$$pvar"
+        eval ${pvar}_level=$(($level+1))
+    done
+}
+
+popvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:-0}
+        test $level = 0 && continue
+        eval level=$(($level-1))
+        eval $pvar="\${${pvar}_${level}}"
+        eval ${pvar}_level=$level
+        eval unset ${pvar}_${level}
+    done
+}
+
+enable(){
+    set_all yes $*
+}
+
+disable(){
+    set_all no $*
+}
+
+enable_weak(){
+    set_weak yes $*
+}
+
+disable_weak(){
+    set_weak no $*
+}
+
+enable_safe(){
+    for var; do
+        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+disable_safe(){
+    for var; do
+        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+do_enable_deep(){
+    for var; do
+        enabled $var && continue
+        eval sel="\$${var}_select"
+        eval sgs="\$${var}_suggest"
+        pushvar var sgs
+        enable_deep $sel
+        popvar sgs
+        enable_deep_weak $sgs
+        popvar var
+    done
+}
+
+enable_deep(){
+    do_enable_deep $*
+    enable $*
+}
+
+enable_deep_weak(){
+    for var; do
+        disabled $var && continue
+        pushvar var
+        do_enable_deep $var
+        popvar var
+        enable_weak $var
+    done
+}
+
+enabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xyes"
+}
+
+disabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xno"
+}
+
+enabled_all(){
+    for opt; do
+        enabled $opt || return 1
+    done
+}
+
+disabled_all(){
+    for opt; do
+        disabled $opt || return 1
+    done
+}
+
+enabled_any(){
+    for opt; do
+        enabled $opt && return 0
+    done
+}
+
+disabled_any(){
+    for opt; do
+        disabled $opt && return 0
+    done
+    return 1
+}
+
+set_default(){
+    for opt; do
+        eval : \${$opt:=\$${opt}_default}
+    done
+}
+
+is_in(){
+    value=$1
+    shift
+    for var in $*; do
+        [ $var = $value ] && return 0
+    done
+    return 1
+}
+
+do_check_deps(){
+    for cfg; do
+        cfg="${cfg#!}"
+        enabled ${cfg}_checking && die "Circular dependency for $cfg."
+        disabled ${cfg}_checking && continue
+        enable ${cfg}_checking
+        append allopts $cfg
+
+        eval dep_all="\$${cfg}_deps"
+        eval dep_any="\$${cfg}_deps_any"
+        eval dep_sel="\$${cfg}_select"
+        eval dep_sgs="\$${cfg}_suggest"
+        eval dep_ifa="\$${cfg}_if"
+        eval dep_ifn="\$${cfg}_if_any"
+
+        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+        do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
+        popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+
+        [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
+        [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
+        enabled_all  $dep_all || disable $cfg
+        enabled_any  $dep_any || disable $cfg
+        disabled_any $dep_sel && disable $cfg
+
+        if enabled $cfg; then
+            enable_deep $dep_sel
+            enable_deep_weak $dep_sgs
+        fi
+
+        disable ${cfg}_checking
+    done
+}
+
+check_deps(){
+    unset allopts
+
+    do_check_deps "$@"
+
+    for cfg in $allopts; do
+        enabled $cfg || continue
+        eval dep_extralibs="\$${cfg}_extralibs"
+        test -n "$dep_extralibs" && add_extralibs $dep_extralibs
+    done
+}
+
+print_config(){
+    pfx=$1
+    files=$2
+    shift 2
+    map 'eval echo "$v \${$v:-no}"' "$@" |
+    awk "BEGIN { split(\"$files\", files) }
+        {
+            c = \"$pfx\" toupper(\$1);
+            v = \$2;
+            sub(/yes/, 1, v);
+            sub(/no/,  0, v);
+            for (f in files) {
+                file = files[f];
+                if (file ~ /\\.h\$/) {
+                    printf(\"#define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.asm\$/) {
+                    printf(\"%%define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.mak\$/) {
+                    n = -v ? \"\" : \"!\";
+                    printf(\"%s%s=yes\\n\", n, c) >>file;
+                } else if (file ~ /\\.texi\$/) {
+                    pre = -v ? \"\" : \"@c \";
+                    yesno = \$2;
+                    c2 = tolower(c);
+                    gsub(/_/, \"-\", c2);
+                    printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
+                }
+            }
+        }"
+}
+
+print_enabled(){
+    suf=$1
+    shift
+    for v; do
+        enabled $v && printf "%s\n" ${v%$suf}
+    done
+}
+
+append(){
+    var=$1
+    shift
+    eval "$var=\"\$$var $*\""
+}
+
+prepend(){
+    var=$1
+    shift
+    eval "$var=\"$* \$$var\""
+}
+
+unique(){
+    var=$1
+    uniq_list=""
+    for tok in $(eval echo \$$var); do
+        uniq_list="$(filter_out $tok $uniq_list) $tok"
+    done
+    eval "$var=\"${uniq_list}\""
+}
+
+add_cppflags(){
+    append CPPFLAGS "$@"
+}
+
+add_cflags(){
+    append CFLAGS $($cflags_filter "$@")
+}
+
+add_cxxflags(){
+    append CXXFLAGS $($cflags_filter "$@")
+}
+
+add_asflags(){
+    append ASFLAGS $($asflags_filter "$@")
+}
+
+add_objcflags(){
+    append OBJCFLAGS $($objcflags_filter "$@")
+}
+
+add_ldflags(){
+    append LDFLAGS $($ldflags_filter "$@")
+}
+
+add_ldexeflags(){
+    append LDEXEFLAGS $($ldflags_filter "$@")
+}
+
+add_ldlibflags(){
+    append LDLIBFLAGS $($ldflags_filter "$@")
+}
+
+add_stripflags(){
+    append ASMSTRIPFLAGS "$@"
+}
+
+add_extralibs(){
+    prepend extralibs $($ldflags_filter "$@")
+}
+
+add_host_cppflags(){
+    append host_cppflags "$@"
+}
+
+add_host_cflags(){
+    append host_cflags $($host_cflags_filter "$@")
+}
+
+add_host_ldflags(){
+    append host_ldflags $($host_ldflags_filter "$@")
+}
+
+add_compat(){
+    append compat_objs $1
+    shift
+    map 'add_cppflags -D$v' "$@"
+}
+
+check_cmd(){
+    log "$@"
+    "$@" >> $logfile 2>&1
+}
+
+check_stat(){
+    log check_stat "$@"
+    stat "$1" >> $logfile 2>&1
+}
+
+cc_o(){
+    eval printf '%s\\n' $CC_O
+}
+
+cc_e(){
+    eval printf '%s\\n' $CC_E
+}
+
+check_cc(){
+    log check_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
+}
+
+check_cxx(){
+    log check_cxx "$@"
+    cat > $TMPCPP
+    log_file $TMPCPP
+    check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
+}
+
+check_objcc(){
+    log check_objcc "$@"
+    cat > $TMPM
+    log_file $TMPM
+    check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
+}
+
+check_cpp(){
+    log check_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
+}
+
+as_o(){
+    eval printf '%s\\n' $AS_O
+}
+
+check_as(){
+    log check_as "$@"
+    cat > $TMPS
+    log_file $TMPS
+    check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
+}
+
+check_inline_asm(){
+    log check_inline_asm "$@"
+    name="$1"
+    code="$2"
+    shift 2
+    disable $name
+    check_cc "$@" <<EOF && enable $name
+void foo(void){ __asm__ volatile($code); }
+EOF
+}
+
+check_inline_asm_flags(){
+    log check_inline_asm_flags "$@"
+    name="$1"
+    code="$2"
+    flags=''
+    shift 2
+    while [ "$1" != "" ]; do
+      append flags $1
+      shift
+    done;
+    disable $name
+    cat > $TMPC <<EOF
+void foo(void){ __asm__ volatile($code); }
+EOF
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
+    enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
+}
+
+check_insn(){
+    log check_insn "$@"
+    check_inline_asm ${1}_inline "\"$2\""
+    echo "$2" | check_as && enable ${1}_external || disable ${1}_external
+}
+
+check_yasm(){
+    log check_yasm "$@"
+    echo "$1" > $TMPS
+    log_file $TMPS
+    shift 1
+    check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
+}
+
+ld_o(){
+    eval printf '%s\\n' $LD_O
+}
+
+check_ld(){
+    log check_ld "$@"
+    type=$1
+    shift 1
+    flags=$(filter_out '-l*|*.so' $@)
+    libs=$(filter '-l*|*.so' $@)
+    check_$type $($cflags_filter $flags) || return
+    flags=$($ldflags_filter $flags)
+    libs=$($ldflags_filter $libs)
+    check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
+}
+
+print_include(){
+    hdr=$1
+    test "${hdr%.h}" = "${hdr}" &&
+        echo "#include $hdr"    ||
+        echo "#include <$hdr>"
+}
+
+check_code(){
+    log check_code "$@"
+    check=$1
+    headers=$2
+    code=$3
+    shift 3
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        echo "int main(void) { $code; return 0; }"
+    } | check_$check "$@"
+}
+
+check_cppflags(){
+    log check_cppflags "$@"
+    check_cc "$@" <<EOF && append CPPFLAGS "$@"
+int x;
+EOF
+}
+
+test_cflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cc "$@" <<EOF
+int x;
+EOF
+}
+
+check_cflags(){
+    log check_cflags "$@"
+    test_cflags "$@" && add_cflags "$@"
+}
+
+check_cxxflags(){
+    log check_cxxflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cxx "$@" <<EOF && append CXXFLAGS "$@"
+int x;
+EOF
+}
+
+test_objcflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_objcc "$@" <<EOF
+int x;
+EOF
+}
+
+check_objcflags(){
+    log check_cflags "$@"
+    test_objcflags "$@" && add_objcflags "$@"
+}
+
+test_ldflags(){
+    log test_ldflags "$@"
+    check_ld "cc" "$@" <<EOF
+int main(void){ return 0; }
+EOF
+}
+
+check_ldflags(){
+    log check_ldflags "$@"
+    test_ldflags "$@" && add_ldflags "$@"
+}
+
+test_stripflags(){
+    log test_stripflags "$@"
+    # call check_cc to get a fresh TMPO
+    check_cc <<EOF
+int main(void) { return 0; }
+EOF
+    check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
+}
+
+check_stripflags(){
+    log check_stripflags "$@"
+    test_stripflags "$@" && add_stripflags "$@"
+}
+
+check_header(){
+    log check_header "$@"
+    header=$1
+    shift
+    disable_safe $header
+    check_cpp "$@" <<EOF && enable_safe $header
+#include <$header>
+int x;
+EOF
+}
+
+check_header_objcc(){
+    log check_header_objcc "$@"
+    rm -f -- "$TMPO"
+    header=$1
+    shift
+    disable_safe $header
+    {
+       echo "#include <$header>"
+       echo "int main(void) { return 0; }"
+    } | check_objcc && check_stat "$TMPO" && enable_safe $headers
+}
+
+check_func(){
+    log check_func "$@"
+    func=$1
+    shift
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+extern int $func();
+int main(void){ $func(); }
+EOF
+}
+
+check_complexfunc(){
+    log check_complexfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f * I"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <complex.h>
+#include <math.h>
+float foo(complex float f, complex float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_mathfunc(){
+    log check_mathfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <math.h>
+float foo(float f, float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_func_headers(){
+    log check_func_headers "$@"
+    headers=$1
+    funcs=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        for func in $funcs; do
+            echo "long check_$func(void) { return (long) $func; }"
+        done
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_class_headers_cpp(){
+    log check_class_headers_cpp "$@"
+    headers=$1
+    classes=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            echo "#include <$hdr>"
+        done
+        echo "int main(void) { "
+        i=1
+        for class in $classes; do
+            echo "$class obj$i;"
+            i=$(expr $i + 1)
+        done
+        echo "return 0; }"
+    } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_cpp_condition(){
+    log check_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+check_lib(){
+    log check_lib "$@"
+    header="$1"
+    func="$2"
+    shift 2
+    check_header $header && check_func $func "$@" && add_extralibs "$@"
+}
+
+check_lib2(){
+    log check_lib2 "$@"
+    headers="$1"
+    funcs="$2"
+    shift 2
+    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
+}
+
+check_lib_cpp(){
+    log check_lib_cpp "$@"
+    headers="$1"
+    classes="$2"
+    shift 2
+    check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
+}
+
+check_pkg_config(){
+    log check_pkg_config "$@"
+    pkgandversion="$1"
+    pkg="${1%% *}"
+    headers="$2"
+    funcs="$3"
+    shift 3
+    check_cmd $pkg_config --exists --print-errors $pkgandversion || return
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
+        set_safe "${pkg}_cflags" $pkg_cflags   &&
+        set_safe "${pkg}_libs"   $pkg_libs
+}
+
+check_exec(){
+    check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
+}
+
+check_exec_crash(){
+    code=$(cat)
+
+    # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
+    # are safe but may not be available everywhere.  Thus we use
+    # raise(SIGTERM) instead.  The check is run in a subshell so we
+    # can redirect the "Terminated" message from the shell.  SIGBUS
+    # is not defined by standard C so it is used conditionally.
+
+    (check_exec "$@") >> $logfile 2>&1 <<EOF
+#include <signal.h>
+static void sighandler(int sig){
+    raise(SIGTERM);
+}
+int foo(void){
+    $code
+}
+int (*func_ptr)(void) = foo;
+int main(void){
+    signal(SIGILL, sighandler);
+    signal(SIGFPE, sighandler);
+    signal(SIGSEGV, sighandler);
+#ifdef SIGBUS
+    signal(SIGBUS, sighandler);
+#endif
+    return func_ptr();
+}
+EOF
+}
+
+check_type(){
+    log check_type "$@"
+    headers=$1
+    type=$2
+    shift 2
+    disable_safe "$type"
+    check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
+}
+
+check_struct(){
+    log check_struct "$@"
+    headers=$1
+    struct=$2
+    member=$3
+    shift 3
+    disable_safe "${struct}_${member}"
+    check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
+        enable_safe "${struct}_${member}"
+}
+
+check_builtin(){
+    log check_builtin "$@"
+    name=$1
+    headers=$2
+    builtin=$3
+    shift 3
+    disable "$name"
+    check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
+}
+
+check_compile_assert(){
+    log check_compile_assert "$@"
+    name=$1
+    headers=$2
+    condition=$3
+    shift 3
+    disable "$name"
+    check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
+}
+
+require(){
+    name="$1"
+    header="$2"
+    func="$3"
+    shift 3
+    check_lib $header $func "$@" || die "ERROR: $name not found"
+}
+
+require2(){
+    name="$1"
+    headers="$2"
+    func="$3"
+    shift 3
+    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
+}
+
+require_cpp(){
+    name="$1"
+    headers="$2"
+    classes="$3"
+    shift 3
+    check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
+}
+
+use_pkg_config(){
+    pkg="$1"
+    check_pkg_config "$@" || return 1
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+require_pkg_config(){
+    use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
+}
+
+require_libfreetype(){
+    log require_libfreetype "$@"
+    pkg="freetype2"
+    check_cmd $pkg_config --exists --print-errors $pkg \
+      || die "ERROR: $pkg not found"
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    {
+        echo "#include <ft2build.h>"
+        echo "#include FT_FREETYPE_H"
+        echo "long check_func(void) { return (long) FT_Init_FreeType; }"
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" $pkg_cflags $pkg_libs \
+      && set_safe "${pkg}_cflags" $pkg_cflags \
+      && set_safe "${pkg}_libs"   $pkg_libs \
+      || die "ERROR: $pkg not found"
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+hostcc_e(){
+    eval printf '%s\\n' $HOSTCC_E
+}
+
+hostcc_o(){
+    eval printf '%s\\n' $HOSTCC_O
+}
+
+check_host_cc(){
+    log check_host_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
+}
+
+check_host_cpp(){
+    log check_host_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
+}
+
+check_host_cppflags(){
+    log check_host_cppflags "$@"
+    check_host_cc "$@" <<EOF && append host_cppflags "$@"
+int x;
+EOF
+}
+
+check_host_cflags(){
+    log check_host_cflags "$@"
+    set -- $($host_cflags_filter "$@")
+    check_host_cc "$@" <<EOF && append host_cflags "$@"
+int x;
+EOF
+}
+
+check_host_cpp_condition(){
+    log check_host_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_host_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+cp_if_changed(){
+    cmp -s "$1" "$2" && echo "$2 is unchanged" && return
+    mkdir -p "$(dirname $2)"
+    $cp_f "$1" "$2"
+}
+
+# CONFIG_LIST contains configurable options, while HAVE_LIST is for
+# system-dependent things.
+
+AVCODEC_COMPONENTS="
+    bsfs
+    decoders
+    encoders
+    hwaccels
+    parsers
+"
+
+AVDEVICE_COMPONENTS="
+    indevs
+    outdevs
+"
+AVFILTER_COMPONENTS="
+    filters
+"
+AVFORMAT_COMPONENTS="
+    demuxers
+    muxers
+    protocols
+"
+
+AVRESAMPLE_COMPONENTS=""
+AVUTIL_COMPONENTS=""
+
+COMPONENT_LIST="
+    $AVCODEC_COMPONENTS
+    $AVDEVICE_COMPONENTS
+    $AVFILTER_COMPONENTS
+    $AVFORMAT_COMPONENTS
+    $AVRESAMPLE_COMPONENTS
+    $AVUTIL_COMPONENTS
+"
+
+EXAMPLE_LIST="
+    avio_reading_example
+    avio_dir_cmd_example
+    decoding_encoding_example
+    demuxing_decoding_example
+    extract_mvs_example
+    filter_audio_example
+    filtering_audio_example
+    filtering_video_example
+    metadata_example
+    muxing_example
+    qsvdec_example
+    remuxing_example
+    resampling_audio_example
+    scaling_video_example
+    transcode_aac_example
+    transcoding_example
+"
+
+EXTERNAL_LIBRARY_LIST="
+    avisynth
+    bzlib
+    chromaprint
+    crystalhd
+    decklink
+    frei0r
+    gcrypt
+    gmp
+    gnutls
+    iconv
+    jni
+    ladspa
+    libass
+    libbluray
+    libbs2b
+    libcaca
+    libcdio
+    libcelt
+    libdc1394
+    libebur128
+    libfaac
+    libfdk_aac
+    libflite
+    libfontconfig
+    libfreetype
+    libfribidi
+    libgme
+    libgsm
+    libiec61883
+    libilbc
+    libkvazaar
+    libmodplug
+    libmp3lame
+    libnut
+    libopencore_amrnb
+    libopencore_amrwb
+    libopencv
+    libopenh264
+    libopenjpeg
+    libopus
+    libpulse
+    librtmp
+    librubberband
+    libschroedinger
+    libshine
+    libsmbclient
+    libsnappy
+    libsoxr
+    libspeex
+    libssh
+    libtesseract
+    libtheora
+    libtwolame
+    libv4l2
+    libvidstab
+    libvo_amrwbenc
+    libvorbis
+    libvpx
+    libwavpack
+    libwebp
+    libx264
+    libx265
+    libxavs
+    libxcb
+    libxcb_shm
+    libxcb_shape
+    libxcb_xfixes
+    libxvid
+    libzimg
+    libzmq
+    libzvbi
+    lzma
+    mediacodec
+    netcdf
+    openal
+    opencl
+    opengl
+    openssl
+    schannel
+    sdl
+    securetransport
+    videotoolbox
+    x11grab
+    xlib
+    zlib
+"
+
+HWACCEL_LIBRARY_LIST="
+    audiotoolbox
+    cuda
+    cuvid
+    d3d11va
+    dxva2
+    libmfx
+    libnpp
+    mmal
+    nvenc
+    omx
+    vaapi
+    vda
+    vdpau
+    videotoolbox_hwaccel
+    xvmc
+"
+
+DOCUMENT_LIST="
+    doc
+    htmlpages
+    manpages
+    podpages
+    txtpages
+"
+
+FEATURE_LIST="
+    ftrapv
+    gray
+    hardcoded_tables
+    omx_rpi
+    runtime_cpudetect
+    safe_bitstream_reader
+    shared
+    small
+    static
+    swscale_alpha
+"
+
+LIBRARY_LIST="
+    avcodec
+    avdevice
+    avfilter
+    avformat
+    avresample
+    avutil
+    postproc
+    swresample
+    swscale
+"
+
+LICENSE_LIST="
+    gpl
+    nonfree
+    version3
+"
+
+PROGRAM_LIST="
+    ffplay
+    ffprobe
+    ffserver
+    ffmpeg
+"
+
+SUBSYSTEM_LIST="
+    dct
+    dwt
+    error_resilience
+    faan
+    fast_unaligned
+    fft
+    lsp
+    lzo
+    mdct
+    pixelutils
+    network
+    rdft
+"
+
+CONFIG_LIST="
+    $COMPONENT_LIST
+    $DOCUMENT_LIST
+    $EXAMPLE_LIST
+    $EXTERNAL_LIBRARY_LIST
+    $HWACCEL_LIBRARY_LIST
+    $FEATURE_LIST
+    $LICENSE_LIST
+    $LIBRARY_LIST
+    $PROGRAM_LIST
+    $SUBSYSTEM_LIST
+    fontconfig
+    incompatible_libav_abi
+    memalign_hack
+    memory_poisoning
+    neon_clobber_test
+    pic
+    pod2man
+    raise_major
+    thumb
+    valgrind_backtrace
+    xmm_clobber_test
+"
+
+THREADS_LIST="
+    pthreads
+    os2threads
+    w32threads
+"
+
+ATOMICS_LIST="
+    atomics_gcc
+    atomics_suncc
+    atomics_win32
+"
+
+ARCH_LIST="
+    aarch64
+    alpha
+    arm
+    avr32
+    avr32_ap
+    avr32_uc
+    bfin
+    ia64
+    m68k
+    mips
+    mips64
+    parisc
+    ppc
+    ppc64
+    s390
+    sh4
+    sparc
+    sparc64
+    tilegx
+    tilepro
+    tomi
+    x86
+    x86_32
+    x86_64
+"
+
+ARCH_EXT_LIST_ARM="
+    armv5te
+    armv6
+    armv6t2
+    armv8
+    neon
+    vfp
+    vfpv3
+    setend
+"
+
+ARCH_EXT_LIST_MIPS="
+    mipsfpu
+    mips32r2
+    mips32r5
+    mips64r2
+    mips32r6
+    mips64r6
+    mipsdsp
+    mipsdspr2
+    msa
+"
+
+ARCH_EXT_LIST_LOONGSON="
+    loongson2
+    loongson3
+    mmi
+"
+
+ARCH_EXT_LIST_X86_SIMD="
+    aesni
+    amd3dnow
+    amd3dnowext
+    avx
+    avx2
+    fma3
+    fma4
+    mmx
+    mmxext
+    sse
+    sse2
+    sse3
+    sse4
+    sse42
+    ssse3
+    xop
+"
+
+ARCH_EXT_LIST_PPC="
+    altivec
+    dcbzl
+    ldbrx
+    power8
+    ppc4xx
+    vsx
+"
+
+ARCH_EXT_LIST_X86="
+    $ARCH_EXT_LIST_X86_SIMD
+    cpunop
+    i686
+"
+
+ARCH_EXT_LIST="
+    $ARCH_EXT_LIST_ARM
+    $ARCH_EXT_LIST_PPC
+    $ARCH_EXT_LIST_X86
+    $ARCH_EXT_LIST_MIPS
+    $ARCH_EXT_LIST_LOONGSON
+"
+
+ARCH_FEATURES="
+    aligned_stack
+    fast_64bit
+    fast_clz
+    fast_cmov
+    local_aligned_8
+    local_aligned_16
+    local_aligned_32
+    simd_align_16
+"
+
+BUILTIN_LIST="
+    atomic_cas_ptr
+    atomic_compare_exchange
+    machine_rw_barrier
+    MemoryBarrier
+    mm_empty
+    rdtsc
+    sarestart
+    sem_timedwait
+    sync_val_compare_and_swap
+"
+HAVE_LIST_CMDLINE="
+    inline_asm
+    symver
+    yasm
+"
+
+HAVE_LIST_PUB="
+    bigendian
+    fast_unaligned
+    incompatible_libav_abi
+"
+
+HEADERS_LIST="
+    alsa_asoundlib_h
+    altivec_h
+    arpa_inet_h
+    asm_types_h
+    cdio_paranoia_h
+    cdio_paranoia_paranoia_h
+    dispatch_dispatch_h
+    dev_bktr_ioctl_bt848_h
+    dev_bktr_ioctl_meteor_h
+    dev_ic_bt8xx_h
+    dev_video_bktr_ioctl_bt848_h
+    dev_video_meteor_ioctl_meteor_h
+    direct_h
+    dirent_h
+    dlfcn_h
+    d3d11_h
+    dxva_h
+    ES2_gl_h
+    gsm_h
+    io_h
+    mach_mach_time_h
+    machine_ioctl_bt848_h
+    machine_ioctl_meteor_h
+    malloc_h
+    opencv2_core_core_c_h
+    openjpeg_2_1_openjpeg_h
+    openjpeg_2_0_openjpeg_h
+    openjpeg_1_5_openjpeg_h
+    OpenGL_gl3_h
+    poll_h
+    sndio_h
+    soundcard_h
+    sys_mman_h
+    sys_param_h
+    sys_resource_h
+    sys_select_h
+    sys_soundcard_h
+    sys_time_h
+    sys_un_h
+    sys_videoio_h
+    termios_h
+    udplite_h
+    unistd_h
+    valgrind_valgrind_h
+    windows_h
+    winsock2_h
+"
+
+INTRINSICS_LIST="
+    intrinsics_neon
+"
+
+COMPLEX_FUNCS="
+    cabs
+    cexp
+"
+
+MATH_FUNCS="
+    atanf
+    atan2f
+    cbrt
+    cbrtf
+    copysign
+    cosf
+    erf
+    exp2
+    exp2f
+    expf
+    hypot
+    isfinite
+    isinf
+    isnan
+    ldexpf
+    llrint
+    llrintf
+    log2
+    log2f
+    log10f
+    lrint
+    lrintf
+    powf
+    rint
+    round
+    roundf
+    sinf
+    trunc
+    truncf
+"
+
+SYSTEM_FUNCS="
+    access
+    aligned_malloc
+    arc4random
+    clock_gettime
+    closesocket
+    CommandLineToArgvW
+    CoTaskMemFree
+    CryptGenRandom
+    dlopen
+    fcntl
+    flt_lim
+    fork
+    getaddrinfo
+    gethrtime
+    getopt
+    GetProcessAffinityMask
+    GetProcessMemoryInfo
+    GetProcessTimes
+    getrusage
+    GetSystemTimeAsFileTime
+    gettimeofday
+    glob
+    glXGetProcAddress
+    gmtime_r
+    inet_aton
+    isatty
+    jack_port_get_latency_range
+    kbhit
+    localtime_r
+    lstat
+    lzo1x_999_compress
+    mach_absolute_time
+    MapViewOfFile
+    memalign
+    mkstemp
+    mmap
+    mprotect
+    nanosleep
+    PeekNamedPipe
+    posix_memalign
+    pthread_cancel
+    sched_getaffinity
+    SetConsoleTextAttribute
+    SetConsoleCtrlHandler
+    SetDllDirectory
+    setmode
+    setrlimit
+    Sleep
+    strerror_r
+    sysconf
+    sysctl
+    usleep
+    UTGetOSTypeFromString
+    VirtualAlloc
+    wglGetProcAddress
+"
+
+TOOLCHAIN_FEATURES="
+    as_dn_directive
+    as_func
+    as_object_arch
+    asm_mod_q
+    attribute_may_alias
+    attribute_packed
+    ebp_available
+    ebx_available
+    gnu_as
+    gnu_windres
+    ibm_asm
+    inline_asm_direct_symbol_refs
+    inline_asm_labels
+    inline_asm_nonlocal_labels
+    pragma_deprecated
+    rsync_contimeout
+    symver_asm_label
+    symver_gnu_asm
+    vfp_args
+    xform_asm
+    xmm_clobbers
+"
+
+TYPES_LIST="
+    CONDITION_VARIABLE_Ptr
+    socklen_t
+    struct_addrinfo
+    struct_group_source_req
+    struct_ip_mreq_source
+    struct_ipv6_mreq
+    struct_msghdr_msg_flags
+    struct_pollfd
+    struct_rusage_ru_maxrss
+    struct_sctp_event_subscribe
+    struct_sockaddr_in6
+    struct_sockaddr_sa_len
+    struct_sockaddr_storage
+    struct_stat_st_mtim_tv_nsec
+    struct_v4l2_frmivalenum_discrete
+"
+
+HAVE_LIST="
+    $ARCH_EXT_LIST
+    $(add_suffix _external $ARCH_EXT_LIST)
+    $(add_suffix _inline   $ARCH_EXT_LIST)
+    $ARCH_FEATURES
+    $ATOMICS_LIST
+    $BUILTIN_LIST
+    $COMPLEX_FUNCS
+    $HAVE_LIST_CMDLINE
+    $HAVE_LIST_PUB
+    $HEADERS_LIST
+    $INTRINSICS_LIST
+    $MATH_FUNCS
+    $SYSTEM_FUNCS
+    $THREADS_LIST
+    $TOOLCHAIN_FEATURES
+    $TYPES_LIST
+    atomics_native
+    dos_paths
+    dxva2_lib
+    dxva2api_cobj
+    libc_msvcrt
+    libdc1394_1
+    libdc1394_2
+    makeinfo
+    makeinfo_html
+    MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
+    perl
+    pod2man
+    sdl
+    section_data_rel_ro
+    texi2html
+    threads
+    vaapi_drm
+    vaapi_x11
+    vdpau_x11
+    winrt
+    xlib
+"
+
+# options emitted with CONFIG_ prefix but not available on the command line
+CONFIG_EXTRA="
+    aandcttables
+    ac3dsp
+    audio_frame_queue
+    audiodsp
+    blockdsp
+    bswapdsp
+    cabac
+    dirac_parse
+    dvprofile
+    exif
+    faandct
+    faanidct
+    fdctdsp
+    flacdsp
+    fmtconvert
+    frame_thread_encoder
+    g722dsp
+    golomb
+    gplv3
+    h263dsp
+    h264chroma
+    h264dsp
+    h264pred
+    h264qpel
+    hpeldsp
+    huffman
+    huffyuvdsp
+    huffyuvencdsp
+    idctdsp
+    iirfilter
+    imdct15
+    intrax8
+    iso_media
+    ividsp
+    jpegtables
+    lgplv3
+    libx262
+    llauddsp
+    llviddsp
+    lpc
+    lzf
+    me_cmp
+    mpeg_er
+    mpegaudio
+    mpegaudiodsp
+    mpegvideo
+    mpegvideoenc
+    mss34dsp
+    pixblockdsp
+    qpeldsp
+    qsv
+    qsvdec
+    qsvenc
+    rangecoder
+    riffdec
+    riffenc
+    rtpdec
+    rtpenc_chain
+    rv34dsp
+    sinewin
+    snappy
+    srtp
+    startcode
+    texturedsp
+    texturedspenc
+    tpeldsp
+    vaapi_encode
+    vc1dsp
+    videodsp
+    vp3dsp
+    vp56dsp
+    vp8dsp
+    vt_bt2020
+    wma_freqs
+    wmv2dsp
+"
+
+CMDLINE_SELECT="
+    $ARCH_EXT_LIST
+    $CONFIG_LIST
+    $HAVE_LIST_CMDLINE
+    $THREADS_LIST
+    asm
+    cross_compile
+    debug
+    extra_warnings
+    logging
+    lto
+    optimizations
+    rpath
+    stripping
+"
+
+PATHS_LIST="
+    bindir
+    datadir
+    docdir
+    incdir
+    libdir
+    mandir
+    pkgconfigdir
+    prefix
+    shlibdir
+    install_name_dir
+"
+
+CMDLINE_SET="
+    $PATHS_LIST
+    ar
+    arch
+    as
+    assert_level
+    build_suffix
+    cc
+    objcc
+    cpu
+    cross_prefix
+    custom_allocator
+    cxx
+    dep_cc
+    doxygen
+    env
+    extra_version
+    gas
+    host_cc
+    host_cflags
+    host_ld
+    host_ldflags
+    host_libs
+    host_os
+    install
+    ld
+    ln_s
+    logfile
+    malloc_prefix
+    nm
+    optflags
+    pkg_config
+    pkg_config_flags
+    progs_suffix
+    random_seed
+    ranlib
+    samples
+    strip
+    sws_max_filter_size
+    sysinclude
+    sysroot
+    target_exec
+    target_os
+    target_path
+    target_samples
+    tempprefix
+    toolchain
+    valgrind
+    yasmexe
+"
+
+CMDLINE_APPEND="
+    extra_cflags
+    extra_cxxflags
+    extra_objcflags
+    host_cppflags
+"
+
+# code dependency declarations
+
+# architecture extensions
+
+armv5te_deps="arm"
+armv6_deps="arm"
+armv6t2_deps="arm"
+armv8_deps="aarch64"
+neon_deps_any="aarch64 arm"
+intrinsics_neon_deps="neon"
+vfp_deps_any="aarch64 arm"
+vfpv3_deps="vfp"
+setend_deps="arm"
+
+map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
+
+mipsfpu_deps="mips"
+mipsdsp_deps="mips"
+mipsdspr2_deps="mips"
+mips32r2_deps="mips"
+mips32r5_deps="mips"
+mips32r6_deps="mips"
+mips64r2_deps="mips"
+mips64r6_deps="mips"
+msa_deps="mipsfpu"
+mmi_deps="mips"
+
+altivec_deps="ppc"
+dcbzl_deps="ppc"
+ldbrx_deps="ppc"
+ppc4xx_deps="ppc"
+vsx_deps="altivec"
+power8_deps="vsx"
+
+cpunop_deps="i686"
+x86_64_select="i686"
+x86_64_suggest="fast_cmov"
+
+amd3dnow_deps="mmx"
+amd3dnowext_deps="amd3dnow"
+i686_deps="x86"
+mmx_deps="x86"
+mmxext_deps="mmx"
+sse_deps="mmxext"
+sse2_deps="sse"
+sse3_deps="sse2"
+ssse3_deps="sse3"
+sse4_deps="ssse3"
+sse42_deps="sse4"
+aesni_deps="sse42"
+avx_deps="sse42"
+xop_deps="avx"
+fma3_deps="avx"
+fma4_deps="avx"
+avx2_deps="avx"
+
+mmx_external_deps="yasm"
+mmx_inline_deps="inline_asm"
+mmx_suggest="mmx_external mmx_inline"
+
+for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
+    eval dep=\$${ext}_deps
+    eval ${ext}_external_deps='"${dep}_external"'
+    eval ${ext}_inline_deps='"${dep}_inline"'
+    eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
+done
+
+aligned_stack_if_any="aarch64 ppc x86"
+fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
+fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
+fast_unaligned_if_any="aarch64 ppc x86"
+simd_align_16_if_any="altivec neon sse"
+
+# system capabilities
+symver_if_any="symver_asm_label symver_gnu_asm"
+valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
+
+# threading support
+atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
+atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
+atomics_win32_if="MemoryBarrier"
+atomics_native_if_any="$ATOMICS_LIST"
+w32threads_deps="atomics_native"
+threads_if_any="$THREADS_LIST"
+
+# subsystems
+dct_select="rdft"
+dirac_parse_select="golomb"
+error_resilience_select="me_cmp"
+faandct_deps="faan fdctdsp"
+faanidct_deps="faan idctdsp"
+h264dsp_select="startcode"
+frame_thread_encoder_deps="encoders threads"
+intrax8_select="blockdsp idctdsp"
+mdct_select="fft"
+me_cmp_select="fdctdsp idctdsp pixblockdsp"
+mpeg_er_select="error_resilience"
+mpegaudio_select="mpegaudiodsp"
+mpegaudiodsp_select="dct"
+mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
+mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
+vc1dsp_select="h264chroma qpeldsp startcode"
+rdft_select="fft"
+
+# decoders / encoders
+aac_decoder_select="imdct15 mdct sinewin"
+aac_fixed_decoder_select="mdct sinewin"
+aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
+aac_latm_decoder_select="aac_decoder aac_latm_parser"
+ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
+ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
+ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
+ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
+adpcm_g722_decoder_select="g722dsp"
+adpcm_g722_encoder_select="g722dsp"
+aic_decoder_select="golomb idctdsp"
+alac_encoder_select="lpc"
+als_decoder_select="bswapdsp"
+amrnb_decoder_select="lsp"
+amrwb_decoder_select="lsp"
+amv_decoder_select="sp5x_decoder exif"
+amv_encoder_select="aandcttables jpegtables mpegvideoenc"
+ape_decoder_select="bswapdsp llauddsp"
+apng_decoder_select="zlib"
+apng_encoder_select="huffyuvencdsp zlib"
+asv1_decoder_select="blockdsp bswapdsp idctdsp"
+asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
+asv2_decoder_select="blockdsp bswapdsp idctdsp"
+asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
+atrac1_decoder_select="mdct sinewin"
+atrac3_decoder_select="mdct"
+atrac3p_decoder_select="mdct sinewin"
+avrn_decoder_select="exif jpegtables"
+bink_decoder_select="blockdsp hpeldsp"
+binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
+binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
+cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
+cllc_decoder_select="bswapdsp"
+comfortnoise_encoder_select="lpc"
+cook_decoder_select="audiodsp mdct sinewin"
+cscd_decoder_select="lzo"
+cscd_decoder_suggest="zlib"
+dca_decoder_select="mdct"
+dds_decoder_select="texturedsp"
+dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
+dnxhd_decoder_select="blockdsp idctdsp"
+dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
+dvvideo_decoder_select="dvprofile idctdsp"
+dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
+dxa_decoder_select="zlib"
+dxv_decoder_select="lzf texturedsp"
+eac3_decoder_select="ac3_decoder"
+eac3_encoder_select="ac3_encoder"
+eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
+eatgq_decoder_select="aandcttables"
+eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
+exr_decoder_select="zlib"
+ffv1_decoder_select="golomb rangecoder"
+ffv1_encoder_select="rangecoder"
+ffvhuff_decoder_select="huffyuv_decoder"
+ffvhuff_encoder_select="huffyuv_encoder"
+fic_decoder_select="golomb"
+flac_decoder_select="flacdsp golomb"
+flac_encoder_select="bswapdsp flacdsp golomb lpc"
+flashsv2_decoder_select="zlib"
+flashsv2_encoder_select="zlib"
+flashsv_decoder_select="zlib"
+flashsv_encoder_select="zlib"
+flv_decoder_select="h263_decoder"
+flv_encoder_select="h263_encoder"
+fourxm_decoder_select="blockdsp bswapdsp"
+fraps_decoder_select="bswapdsp huffman"
+g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
+g729_decoder_select="audiodsp"
+h261_decoder_select="mpegvideo"
+h261_encoder_select="aandcttables mpegvideoenc"
+h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
+h263_encoder_select="aandcttables h263dsp mpegvideoenc"
+h263i_decoder_select="h263_decoder"
+h263p_decoder_select="h263_decoder"
+h263p_encoder_select="h263_encoder"
+h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
+h264_decoder_suggest="error_resilience"
+hap_decoder_select="snappy texturedsp"
+hap_encoder_deps="libsnappy"
+hap_encoder_select="texturedspenc"
+hevc_decoder_select="bswapdsp cabac golomb videodsp"
+huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
+huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
+iac_decoder_select="imc_decoder"
+imc_decoder_select="bswapdsp fft mdct sinewin"
+indeo3_decoder_select="hpeldsp"
+indeo4_decoder_select="ividsp"
+indeo5_decoder_select="ividsp"
+interplay_video_decoder_select="hpeldsp"
+jpegls_decoder_select="golomb mjpeg_decoder"
+jpegls_encoder_select="golomb"
+jv_decoder_select="blockdsp"
+lagarith_decoder_select="huffyuvdsp"
+ljpeg_encoder_select="aandcttables idctdsp jpegtables"
+loco_decoder_select="golomb"
+magicyuv_decoder_select="huffyuvdsp"
+mdec_decoder_select="blockdsp idctdsp mpegvideo"
+metasound_decoder_select="lsp mdct sinewin"
+mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
+mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
+mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
+mjpegb_decoder_select="mjpeg_decoder"
+mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
+mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
+mlp_decoder_select="mlp_parser"
+motionpixels_decoder_select="bswapdsp"
+mp1_decoder_select="mpegaudio"
+mp1float_decoder_select="mpegaudio"
+mp2_decoder_select="mpegaudio"
+mp2float_decoder_select="mpegaudio"
+mp3_decoder_select="mpegaudio"
+mp3adu_decoder_select="mpegaudio"
+mp3adufloat_decoder_select="mpegaudio"
+mp3float_decoder_select="mpegaudio"
+mp3on4_decoder_select="mpegaudio"
+mp3on4float_decoder_select="mpegaudio"
+mpc7_decoder_select="bswapdsp mpegaudiodsp"
+mpc8_decoder_select="mpegaudiodsp"
+mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
+mpeg_xvmc_decoder_select="mpeg2video_decoder"
+mpegvideo_decoder_select="mpegvideo"
+mpeg1video_decoder_select="mpegvideo"
+mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg2video_decoder_select="mpegvideo"
+mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg4_decoder_select="h263_decoder mpeg4video_parser"
+mpeg4_encoder_select="h263_encoder"
+msa1_decoder_select="mss34dsp"
+msmpeg4v1_decoder_select="h263_decoder"
+msmpeg4v2_decoder_select="h263_decoder"
+msmpeg4v2_encoder_select="h263_encoder"
+msmpeg4v3_decoder_select="h263_decoder"
+msmpeg4v3_encoder_select="h263_encoder"
+mss2_decoder_select="vc1_decoder mpegvideo"
+mts2_decoder_select="mss34dsp"
+mxpeg_decoder_select="mjpeg_decoder"
+nellymoser_decoder_select="mdct sinewin"
+nellymoser_encoder_select="audio_frame_queue mdct sinewin"
+nuv_decoder_select="idctdsp lzo"
+on2avc_decoder_select="mdct"
+opus_decoder_deps="swresample"
+opus_decoder_select="imdct15"
+png_decoder_select="zlib"
+png_encoder_select="huffyuvencdsp zlib"
+prores_decoder_select="blockdsp idctdsp"
+prores_encoder_select="fdctdsp"
+qcelp_decoder_select="lsp"
+qdm2_decoder_select="mdct rdft mpegaudiodsp"
+ra_144_decoder_select="audiodsp"
+ra_144_encoder_select="audio_frame_queue lpc audiodsp"
+ralf_decoder_select="golomb"
+rawvideo_decoder_select="bswapdsp"
+rscc_decoder_select="zlib"
+rtjpeg_decoder_select="me_cmp"
+rv10_decoder_select="h263_decoder"
+rv10_encoder_select="h263_encoder"
+rv20_decoder_select="h263_decoder"
+rv20_encoder_select="h263_encoder"
+rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+screenpresso_decoder_select="zlib"
+shorten_decoder_select="golomb"
+sipr_decoder_select="lsp"
+snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
+snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
+sonic_decoder_select="golomb rangecoder"
+sonic_encoder_select="golomb rangecoder"
+sonic_ls_encoder_select="golomb rangecoder"
+sp5x_decoder_select="mjpeg_decoder"
+svq1_decoder_select="hpeldsp"
+svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
+svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
+svq3_decoder_suggest="zlib"
+tak_decoder_select="audiodsp"
+tdsc_decoder_select="zlib mjpeg_decoder"
+theora_decoder_select="vp3_decoder"
+thp_decoder_select="mjpeg_decoder"
+tiff_decoder_suggest="zlib lzma"
+tiff_encoder_suggest="zlib"
+truehd_decoder_select="mlp_parser"
+truemotion2_decoder_select="bswapdsp"
+truespeech_decoder_select="bswapdsp"
+tscc_decoder_select="zlib"
+twinvq_decoder_select="mdct lsp sinewin"
+txd_decoder_select="texturedsp"
+utvideo_decoder_select="bswapdsp"
+utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
+vble_decoder_select="huffyuvdsp"
+vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
+vc1_qsv_decoder_deps="libmfx"
+vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
+vc1image_decoder_select="vc1_decoder"
+vorbis_decoder_select="mdct"
+vorbis_encoder_select="mdct"
+vp3_decoder_select="hpeldsp vp3dsp videodsp"
+vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
+vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
+vp6a_decoder_select="vp6_decoder"
+vp6f_decoder_select="vp6_decoder"
+vp7_decoder_select="h264pred videodsp vp8dsp"
+vp8_decoder_select="h264pred videodsp vp8dsp"
+vp9_decoder_select="videodsp vp9_parser"
+webp_decoder_select="vp8_decoder exif"
+wmalossless_decoder_select="llauddsp"
+wmapro_decoder_select="mdct sinewin wma_freqs"
+wmav1_decoder_select="mdct sinewin wma_freqs"
+wmav1_encoder_select="mdct sinewin wma_freqs"
+wmav2_decoder_select="mdct sinewin wma_freqs"
+wmav2_encoder_select="mdct sinewin wma_freqs"
+wmavoice_decoder_select="lsp rdft dct mdct sinewin"
+wmv1_decoder_select="h263_decoder"
+wmv1_encoder_select="h263_encoder"
+wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
+wmv2_encoder_select="h263_encoder wmv2dsp"
+wmv3_decoder_select="vc1_decoder"
+wmv3image_decoder_select="wmv3_decoder"
+xma1_decoder_select="wmapro_decoder"
+xma2_decoder_select="wmapro_decoder"
+zerocodec_decoder_select="zlib"
+zlib_decoder_select="zlib"
+zlib_encoder_select="zlib"
+zmbv_decoder_select="zlib"
+zmbv_encoder_select="zlib"
+
+# platform codecs
+audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
+audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
+
+# hardware accelerators
+crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
+cuvid_deps="cuda"
+d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
+dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
+vaapi_deps="va_va_h"
+vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
+vda_framework_extralibs="-framework VideoDecodeAcceleration"
+vda_deps="vda_framework pthreads"
+vda_extralibs="-framework CoreFoundation -framework QuartzCore"
+vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
+videotoolbox_hwaccel_deps="videotoolbox pthreads"
+videotoolbox_hwaccel_extralibs="-framework QuartzCore"
+xvmc_deps="X11_extensions_XvMClib_h"
+
+h263_vaapi_hwaccel_deps="vaapi"
+h263_vaapi_hwaccel_select="h263_decoder"
+h263_videotoolbox_hwaccel_deps="videotoolbox"
+h263_videotoolbox_hwaccel_select="h263_decoder"
+h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
+h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_d3d11va_hwaccel_deps="d3d11va"
+h264_d3d11va_hwaccel_select="h264_decoder"
+h264_dxva2_hwaccel_deps="dxva2"
+h264_dxva2_hwaccel_select="h264_decoder"
+h264_mediacodec_decoder_deps="mediacodec"
+h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
+h264_mmal_decoder_deps="mmal"
+h264_mmal_decoder_select="mmal"
+h264_mmal_hwaccel_deps="mmal"
+h264_omx_encoder_deps="omx"
+h264_qsv_hwaccel_deps="libmfx"
+h264_vaapi_hwaccel_deps="vaapi"
+h264_vaapi_hwaccel_select="h264_decoder"
+h264_vda_decoder_deps="vda"
+h264_vda_decoder_select="h264_decoder"
+h264_vda_hwaccel_deps="vda"
+h264_vda_hwaccel_select="h264_decoder"
+h264_vda_old_hwaccel_deps="vda"
+h264_vda_old_hwaccel_select="h264_decoder"
+h264_vdpau_decoder_deps="vdpau"
+h264_vdpau_decoder_select="h264_decoder"
+h264_vdpau_hwaccel_deps="vdpau"
+h264_vdpau_hwaccel_select="h264_decoder"
+h264_videotoolbox_hwaccel_deps="videotoolbox"
+h264_videotoolbox_hwaccel_select="h264_decoder"
+hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
+hevc_d3d11va_hwaccel_select="hevc_decoder"
+hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
+hevc_dxva2_hwaccel_select="hevc_decoder"
+hevc_qsv_hwaccel_deps="libmfx"
+hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
+hevc_vaapi_hwaccel_select="hevc_decoder"
+hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
+hevc_vdpau_hwaccel_select="hevc_decoder"
+mpeg_vdpau_decoder_deps="vdpau"
+mpeg_vdpau_decoder_select="mpeg2video_decoder"
+mpeg_xvmc_hwaccel_deps="xvmc"
+mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg1_vdpau_decoder_deps="vdpau"
+mpeg1_vdpau_decoder_select="mpeg1video_decoder"
+mpeg1_vdpau_hwaccel_deps="vdpau"
+mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
+mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
+mpeg1_xvmc_hwaccel_deps="xvmc"
+mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
+mpeg2_crystalhd_decoder_select="crystalhd"
+mpeg2_d3d11va_hwaccel_deps="d3d11va"
+mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
+mpeg2_dxva2_hwaccel_deps="dxva2"
+mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
+mpeg2_mmal_decoder_deps="mmal"
+mpeg2_mmal_decoder_select="mmal"
+mpeg2_mmal_hwaccel_deps="mmal"
+mpeg2_qsv_hwaccel_deps="libmfx"
+mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
+mpeg2_vaapi_hwaccel_deps="vaapi"
+mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
+mpeg2_vdpau_hwaccel_deps="vdpau"
+mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
+mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
+mpeg2_xvmc_hwaccel_deps="xvmc"
+mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg4_crystalhd_decoder_select="crystalhd"
+mpeg4_mmal_decoder_deps="mmal"
+mpeg4_mmal_decoder_select="mmal"
+mpeg4_mmal_hwaccel_deps="mmal"
+mpeg4_omx_encoder_deps="omx"
+mpeg4_vaapi_hwaccel_deps="vaapi"
+mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
+mpeg4_vdpau_decoder_deps="vdpau"
+mpeg4_vdpau_decoder_select="mpeg4_decoder"
+mpeg4_vdpau_hwaccel_deps="vdpau"
+mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
+mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
+msmpeg4_crystalhd_decoder_select="crystalhd"
+vc1_crystalhd_decoder_select="crystalhd"
+vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_d3d11va_hwaccel_deps="d3d11va"
+vc1_d3d11va_hwaccel_select="vc1_decoder"
+vc1_dxva2_hwaccel_deps="dxva2"
+vc1_dxva2_hwaccel_select="vc1_decoder"
+vc1_mmal_decoder_deps="mmal"
+vc1_mmal_decoder_select="mmal"
+vc1_mmal_hwaccel_deps="mmal"
+vc1_qsv_hwaccel_deps="libmfx"
+vc1_qsv_hwaccel_select="qsvdec_vc1"
+vc1_vaapi_hwaccel_deps="vaapi"
+vc1_vaapi_hwaccel_select="vc1_decoder"
+vc1_vdpau_decoder_deps="vdpau"
+vc1_vdpau_decoder_select="vc1_decoder"
+vc1_vdpau_hwaccel_deps="vdpau"
+vc1_vdpau_hwaccel_select="vc1_decoder"
+vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
+vp9_d3d11va_hwaccel_select="vp9_decoder"
+vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
+vp9_dxva2_hwaccel_select="vp9_decoder"
+vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
+vp9_vaapi_hwaccel_select="vp9_decoder"
+wmv3_crystalhd_decoder_select="crystalhd"
+wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
+wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
+wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
+wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
+wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
+
+# hardware-accelerated codecs
+omx_deps="dlopen pthreads"
+omx_extralibs='$ldl'
+qsvdec_select="qsv"
+qsvenc_select="qsv"
+vaapi_encode_deps="vaapi"
+
+hwupload_cuda_filter_deps="cuda"
+scale_npp_filter_deps="cuda libnpp"
+
+nvenc_encoder_deps="nvenc"
+h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
+h264_nvenc_encoder_deps="nvenc"
+h264_qsv_decoder_deps="libmfx"
+h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
+h264_qsv_encoder_deps="libmfx"
+h264_qsv_encoder_select="qsvenc"
+h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
+h264_vaapi_encoder_select="vaapi_encode golomb"
+
+hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
+hevc_nvenc_encoder_deps="nvenc"
+hevc_qsv_decoder_deps="libmfx"
+hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
+hevc_qsv_encoder_deps="libmfx"
+hevc_qsv_encoder_select="qsvenc"
+hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
+hevc_vaapi_encoder_select="vaapi_encode golomb"
+mpeg2_qsv_decoder_deps="libmfx"
+mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
+mpeg2_qsv_encoder_deps="libmfx"
+mpeg2_qsv_encoder_select="qsvenc"
+nvenc_h264_encoder_deps="nvenc"
+nvenc_hevc_encoder_deps="nvenc"
+
+vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
+vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
+vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
+
+# parsers
+h264_parser_select="golomb h264dsp"
+hevc_parser_select="golomb"
+mpegvideo_parser_select="mpegvideo"
+mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
+vc1_parser_select="vc1dsp"
+
+# bitstream_filters
+mjpeg2jpeg_bsf_select="jpegtables"
+
+# external libraries
+aac_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_select="ac3_parser"
+adpcm_ima_qt_at_decoder_deps="audiotoolbox"
+alac_at_decoder_deps="audiotoolbox"
+amr_nb_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_select="ac3_parser"
+gsm_ms_at_decoder_deps="audiotoolbox"
+ilbc_at_decoder_deps="audiotoolbox"
+mp1_at_decoder_deps="audiotoolbox"
+mp2_at_decoder_deps="audiotoolbox"
+mp3_at_decoder_deps="audiotoolbox"
+pcm_alaw_at_decoder_deps="audiotoolbox"
+pcm_mulaw_at_decoder_deps="audiotoolbox"
+qdmc_at_decoder_deps="audiotoolbox"
+qdm2_at_decoder_deps="audiotoolbox"
+aac_at_encoder_deps="audiotoolbox"
+aac_at_encoder_select="audio_frame_queue"
+alac_at_encoder_deps="audiotoolbox"
+alac_at_encoder_select="audio_frame_queue"
+ilbc_at_encoder_deps="audiotoolbox"
+ilbc_at_encoder_select="audio_frame_queue"
+pcm_alaw_at_encoder_deps="audiotoolbox"
+pcm_alaw_at_encoder_select="audio_frame_queue"
+pcm_mulaw_at_encoder_deps="audiotoolbox"
+pcm_mulaw_at_encoder_select="audio_frame_queue"
+chromaprint_muxer_deps="chromaprint"
+h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
+libcelt_decoder_deps="libcelt"
+libfaac_encoder_deps="libfaac"
+libfaac_encoder_select="audio_frame_queue"
+libfdk_aac_decoder_deps="libfdk_aac"
+libfdk_aac_encoder_deps="libfdk_aac"
+libfdk_aac_encoder_select="audio_frame_queue"
+libgme_demuxer_deps="libgme"
+libgsm_decoder_deps="libgsm"
+libgsm_encoder_deps="libgsm"
+libgsm_ms_decoder_deps="libgsm"
+libgsm_ms_encoder_deps="libgsm"
+libilbc_decoder_deps="libilbc"
+libilbc_encoder_deps="libilbc"
+libkvazaar_encoder_deps="libkvazaar"
+libmodplug_demuxer_deps="libmodplug"
+libmp3lame_encoder_deps="libmp3lame"
+libmp3lame_encoder_select="audio_frame_queue"
+libopencore_amrnb_decoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_select="audio_frame_queue"
+libopencore_amrwb_decoder_deps="libopencore_amrwb"
+libopenh264_encoder_deps="libopenh264"
+libopenjpeg_decoder_deps="libopenjpeg"
+libopenjpeg_encoder_deps="libopenjpeg"
+libopus_decoder_deps="libopus"
+libopus_encoder_deps="libopus"
+libopus_encoder_select="audio_frame_queue"
+libschroedinger_decoder_deps="libschroedinger"
+libschroedinger_encoder_deps="libschroedinger"
+libshine_encoder_deps="libshine"
+libshine_encoder_select="audio_frame_queue"
+libspeex_decoder_deps="libspeex"
+libspeex_encoder_deps="libspeex"
+libspeex_encoder_select="audio_frame_queue"
+libtheora_encoder_deps="libtheora"
+libtwolame_encoder_deps="libtwolame"
+libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
+libvorbis_decoder_deps="libvorbis"
+libvorbis_encoder_deps="libvorbis"
+libvorbis_encoder_select="audio_frame_queue"
+libvpx_vp8_decoder_deps="libvpx"
+libvpx_vp8_encoder_deps="libvpx"
+libvpx_vp9_decoder_deps="libvpx"
+libvpx_vp9_encoder_deps="libvpx"
+libwavpack_encoder_deps="libwavpack"
+libwebp_encoder_deps="libwebp"
+libwebp_anim_encoder_deps="libwebp"
+libx262_encoder_deps="libx262"
+libx264_encoder_deps="libx264"
+libx264rgb_encoder_deps="libx264 x264_csp_bgr"
+libx264rgb_encoder_select="libx264_encoder"
+libx265_encoder_deps="libx265"
+libxavs_encoder_deps="libxavs"
+libxvid_encoder_deps="libxvid"
+libzvbi_teletext_decoder_deps="libzvbi"
+videotoolbox_deps="VideoToolbox_VideoToolbox_h"
+videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
+videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
+videotoolbox_encoder_suggest="vda_framework vt_bt2020"
+vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
+
+# demuxers / muxers
+ac3_demuxer_select="ac3_parser"
+asf_demuxer_select="riffdec"
+asf_o_demuxer_select="riffdec"
+asf_muxer_select="riffenc"
+asf_stream_muxer_select="asf_muxer"
+avi_demuxer_select="iso_media riffdec exif"
+avi_muxer_select="riffenc"
+avisynth_demuxer_deps="avisynth"
+avisynth_demuxer_select="riffdec"
+caf_demuxer_select="iso_media riffdec"
+dash_muxer_select="mp4_muxer"
+dirac_demuxer_select="dirac_parser"
+dts_demuxer_select="dca_parser"
+dtshd_demuxer_select="dca_parser"
+dv_demuxer_select="dvprofile"
+dv_muxer_select="dvprofile"
+dxa_demuxer_select="riffdec"
+eac3_demuxer_select="ac3_parser"
+f4v_muxer_select="mov_muxer"
+flac_demuxer_select="flac_parser"
+hds_muxer_select="flv_muxer"
+hls_muxer_select="mpegts_muxer"
+image2_alias_pix_demuxer_select="image2_demuxer"
+image2_brender_pix_demuxer_select="image2_demuxer"
+ipod_muxer_select="mov_muxer"
+ismv_muxer_select="mov_muxer"
+libnut_demuxer_deps="libnut"
+libnut_muxer_deps="libnut"
+matroska_audio_muxer_select="matroska_muxer"
+matroska_demuxer_select="iso_media riffdec"
+matroska_demuxer_suggest="bzlib lzo zlib"
+matroska_muxer_select="iso_media riffenc"
+mmf_muxer_select="riffenc"
+mov_demuxer_select="iso_media riffdec"
+mov_demuxer_suggest="zlib"
+mov_muxer_select="iso_media riffenc rtpenc_chain"
+mp3_demuxer_select="mpegaudio_parser"
+mp4_muxer_select="mov_muxer"
+mpegts_demuxer_select="iso_media"
+mpegts_muxer_select="adts_muxer latm_muxer"
+mpegtsraw_demuxer_select="mpegts_demuxer"
+mxf_d10_muxer_select="mxf_muxer"
+mxf_opatom_muxer_select="mxf_muxer"
+nut_muxer_select="riffenc"
+nuv_demuxer_select="riffdec"
+oga_muxer_select="ogg_muxer"
+ogg_demuxer_select="dirac_parse"
+opus_muxer_select="ogg_muxer"
+psp_muxer_select="mov_muxer"
+rtp_demuxer_select="sdp_demuxer"
+rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
+rtsp_demuxer_select="http_protocol rtpdec"
+rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
+sap_demuxer_select="sdp_demuxer"
+sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
+sdp_demuxer_select="rtpdec"
+smoothstreaming_muxer_select="ismv_muxer"
+spdif_muxer_select="aac_parser"
+spx_muxer_select="ogg_muxer"
+swf_demuxer_suggest="zlib"
+tak_demuxer_select="tak_parser"
+tg2_muxer_select="mov_muxer"
+tgp_muxer_select="mov_muxer"
+vobsub_demuxer_select="mpegps_demuxer"
+w64_demuxer_select="wav_demuxer"
+w64_muxer_select="wav_muxer"
+wav_demuxer_select="riffdec"
+wav_muxer_select="riffenc"
+webm_muxer_select="iso_media riffenc"
+webm_dash_manifest_demuxer_select="matroska_demuxer"
+wtv_demuxer_select="mpegts_demuxer riffdec"
+wtv_muxer_select="mpegts_muxer riffenc"
+xmv_demuxer_select="riffdec"
+xwma_demuxer_select="riffdec"
+
+# indevs / outdevs
+alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
+alsa_outdev_deps="alsa_asoundlib_h"
+avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
+avfoundation_indev_select="avfoundation"
+bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
+caca_outdev_deps="libcaca"
+decklink_indev_deps="decklink pthreads"
+decklink_indev_extralibs="-lstdc++"
+decklink_outdev_deps="decklink pthreads"
+decklink_outdev_extralibs="-lstdc++"
+dshow_indev_deps="IBaseFilter"
+dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
+dv1394_indev_deps="dv1394"
+dv1394_indev_select="dv_demuxer"
+fbdev_indev_deps="linux_fb_h"
+fbdev_outdev_deps="linux_fb_h"
+gdigrab_indev_deps="CreateDIBSection"
+gdigrab_indev_extralibs="-lgdi32"
+gdigrab_indev_select="bmp_decoder"
+iec61883_indev_deps="libiec61883"
+jack_indev_deps="jack_jack_h"
+jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
+lavfi_indev_deps="avfilter"
+libcdio_indev_deps="libcdio"
+libdc1394_indev_deps="libdc1394"
+libv4l2_indev_deps="libv4l2"
+openal_indev_deps="openal"
+opengl_outdev_deps="opengl"
+oss_indev_deps_any="soundcard_h sys_soundcard_h"
+oss_outdev_deps_any="soundcard_h sys_soundcard_h"
+pulse_indev_deps="libpulse"
+pulse_outdev_deps="libpulse"
+qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
+qtkit_indev_select="qtkit"
+sdl_outdev_deps="sdl"
+sndio_indev_deps="sndio_h"
+sndio_outdev_deps="sndio_h"
+v4l_indev_deps="linux_videodev_h"
+v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
+v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
+vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
+vfwcap_indev_extralibs="-lavicap32"
+x11grab_indev_deps="x11grab"
+x11grab_xcb_indev_deps="libxcb"
+xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
+xv_outdev_extralibs="-lXv -lX11 -lXext"
+
+gnutls_extralibs="-lp11-kit -ltasn1"
+libcaca_extralibs="-lncursesw"
+libpulse_extralibs="-ldbus-1 -lresolv"
+libsoxr_extralibs="-lgomp"
+libv4l2_extralibs="-lv4lconvert -ljpeg"
+libzmq_extralibs="-lstdc++"
+opengl_extralibs="-lglapi -lxcb"
+
+
+# protocols
+async_protocol_deps="threads"
+bluray_protocol_deps="libbluray"
+ffrtmpcrypt_protocol_deps="!librtmp_protocol"
+ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
+ffrtmpcrypt_protocol_select="tcp_protocol"
+ffrtmphttp_protocol_deps="!librtmp_protocol"
+ffrtmphttp_protocol_select="http_protocol"
+ftp_protocol_select="tcp_protocol"
+gopher_protocol_select="network"
+http_protocol_select="tcp_protocol"
+httpproxy_protocol_select="tcp_protocol"
+https_protocol_select="tls_protocol"
+icecast_protocol_select="http_protocol"
+librtmp_protocol_deps="librtmp"
+librtmpe_protocol_deps="librtmp"
+librtmps_protocol_deps="librtmp"
+librtmpt_protocol_deps="librtmp"
+librtmpte_protocol_deps="librtmp"
+libsmbclient_protocol_deps="libsmbclient gplv3"
+libssh_protocol_deps="libssh"
+mmsh_protocol_select="http_protocol"
+mmst_protocol_select="network"
+rtmp_protocol_deps="!librtmp_protocol"
+rtmp_protocol_select="tcp_protocol"
+rtmpe_protocol_select="ffrtmpcrypt_protocol"
+rtmps_protocol_deps="!librtmp_protocol"
+rtmps_protocol_select="tls_protocol"
+rtmpt_protocol_select="ffrtmphttp_protocol"
+rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
+rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
+rtp_protocol_select="udp_protocol"
+sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
+sctp_protocol_select="network"
+srtp_protocol_select="rtp_protocol srtp"
+tcp_protocol_select="network"
+tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
+tls_gnutls_protocol_select="tcp_protocol"
+tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
+tls_openssl_protocol_select="tcp_protocol"
+tls_schannel_protocol_deps="schannel"
+tls_schannel_protocol_select="tcp_protocol"
+tls_securetransport_protocol_deps="securetransport"
+tls_securetransport_protocol_select="tcp_protocol"
+tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
+udp_protocol_select="network"
+udplite_protocol_select="network"
+unix_protocol_deps="sys_un_h"
+unix_protocol_select="network"
+
+# filters
+afftfilt_filter_deps="avcodec"
+afftfilt_filter_select="fft"
+amovie_filter_deps="avcodec avformat"
+aresample_filter_deps="swresample"
+ass_filter_deps="libass"
+asyncts_filter_deps="avresample"
+atempo_filter_deps="avcodec"
+atempo_filter_select="rdft"
+azmq_filter_deps="libzmq"
+blackframe_filter_deps="gpl"
+boxblur_filter_deps="gpl"
+bs2b_filter_deps="libbs2b"
+colormatrix_filter_deps="gpl"
+cover_rect_filter_deps="avcodec avformat gpl"
+cropdetect_filter_deps="gpl"
+delogo_filter_deps="gpl"
+deshake_filter_select="pixelutils"
+drawtext_filter_deps="libfreetype"
+ebur128_filter_deps="gpl"
+eq_filter_deps="gpl"
+fftfilt_filter_deps="avcodec"
+fftfilt_filter_select="rdft"
+find_rect_filter_deps="avcodec avformat gpl"
+firequalizer_filter_deps="avcodec"
+firequalizer_filter_select="rdft"
+flite_filter_deps="libflite"
+framerate_filter_select="pixelutils"
+frei0r_filter_deps="frei0r dlopen"
+frei0r_src_filter_deps="frei0r dlopen"
+fspp_filter_deps="gpl"
+geq_filter_deps="gpl"
+histeq_filter_deps="gpl"
+hqdn3d_filter_deps="gpl"
+interlace_filter_deps="gpl"
+kerndeint_filter_deps="gpl"
+ladspa_filter_deps="ladspa dlopen"
+loudnorm_filter_deps="libebur128"
+mcdeint_filter_deps="avcodec gpl"
+movie_filter_deps="avcodec avformat"
+mpdecimate_filter_deps="gpl"
+mpdecimate_filter_select="pixelutils"
+mptestsrc_filter_deps="gpl"
+negate_filter_deps="lut_filter"
+nnedi_filter_deps="gpl"
+ocr_filter_deps="libtesseract"
+ocv_filter_deps="libopencv"
+owdenoise_filter_deps="gpl"
+pan_filter_deps="swresample"
+perspective_filter_deps="gpl"
+phase_filter_deps="gpl"
+pp7_filter_deps="gpl"
+pp_filter_deps="gpl postproc"
+pullup_filter_deps="gpl"
+removelogo_filter_deps="avcodec avformat swscale"
+repeatfields_filter_deps="gpl"
+resample_filter_deps="avresample"
+rubberband_filter_deps="librubberband"
+sab_filter_deps="gpl swscale"
+scale2ref_filter_deps="swscale"
+scale_filter_deps="swscale"
+select_filter_select="pixelutils"
+showcqt_filter_deps="avcodec avformat swscale"
+showcqt_filter_select="fft"
+showfreqs_filter_deps="avcodec"
+showfreqs_filter_select="fft"
+showspectrum_filter_deps="avcodec"
+showspectrum_filter_select="fft"
+showspectrumpic_filter_deps="avcodec"
+showspectrumpic_filter_select="fft"
+smartblur_filter_deps="gpl swscale"
+sofalizer_filter_deps="netcdf avcodec"
+sofalizer_filter_select="fft"
+spectrumsynth_filter_deps="avcodec"
+spectrumsynth_filter_select="fft"
+spp_filter_deps="gpl avcodec"
+spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
+stereo3d_filter_deps="gpl"
+subtitles_filter_deps="avformat avcodec libass"
+super2xsai_filter_deps="gpl"
+pixfmts_super2xsai_test_deps="super2xsai_filter"
+tinterlace_filter_deps="gpl"
+tinterlace_merge_test_deps="tinterlace_filter"
+tinterlace_pad_test_deps="tinterlace_filter"
+uspp_filter_deps="gpl avcodec"
+vidstabdetect_filter_deps="libvidstab"
+vidstabtransform_filter_deps="libvidstab"
+zmq_filter_deps="libzmq"
+zoompan_filter_deps="swscale"
+zscale_filter_deps="libzimg"
+scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
+
+# examples
+avcodec_example_deps="avcodec avutil"
+avio_dir_cmd="avformat avutil"
+avio_reading="avformat avcodec avutil"
+decoding_encoding_example_deps="avcodec avformat avutil"
+demuxing_decoding_example_deps="avcodec avformat avutil"
+extract_mvs_example_deps="avcodec avformat avutil"
+filter_audio_example_deps="avfilter avutil"
+filtering_audio_example_deps="avfilter avcodec avformat avutil"
+filtering_video_example_deps="avfilter avcodec avformat avutil"
+metadata_example_deps="avformat avutil"
+muxing_example_deps="avcodec avformat avutil swscale"
+qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
+remuxing_example_deps="avcodec avformat avutil"
+resampling_audio_example_deps="avutil swresample"
+scaling_video_example_deps="avutil swscale"
+transcode_aac_example_deps="avcodec avformat swresample"
+transcoding_example_deps="avfilter avcodec avformat avutil"
+
+# libraries, in linking order
+avcodec_deps="avutil"
+avdevice_deps="avformat avcodec avutil"
+avfilter_deps="avutil"
+avformat_deps="avcodec avutil"
+avresample_deps="avutil"
+postproc_deps="avutil gpl"
+swresample_deps="avutil"
+swscale_deps="avutil"
+
+# programs
+ffmpeg_deps="avcodec avfilter avformat swresample"
+ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
+               null_filter
+               setpts_filter trim_filter"
+ffplay_deps="avcodec avformat swscale swresample sdl"
+ffplay_libs='$sdl_libs'
+ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
+ffprobe_deps="avcodec avformat"
+ffserver_deps="avformat fork sarestart"
+ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
+
+# documentation
+podpages_deps="perl"
+manpages_deps="perl pod2man"
+htmlpages_deps="perl"
+htmlpages_deps_any="makeinfo_html texi2html"
+txtpages_deps="perl makeinfo"
+doc_deps_any="manpages htmlpages podpages txtpages"
+
+# default parameters
+
+logfile="config.log"
+
+# installation paths
+prefix_default="/usr/local"
+bindir_default='${prefix}/bin'
+datadir_default='${prefix}/share/ffmpeg'
+docdir_default='${prefix}/share/doc/ffmpeg'
+incdir_default='${prefix}/include'
+libdir_default='${prefix}/lib'
+mandir_default='${prefix}/share/man'
+
+# toolchain
+ar_default="ar"
+cc_default="gcc"
+cxx_default="g++"
+host_cc_default="gcc"
+cp_f="cp -f"
+doxygen_default="doxygen"
+install="install"
+ln_s_default="ln -s -f"
+nm_default="nm -g"
+objformat="elf"
+pkg_config_default=pkg-config
+ranlib_default="ranlib"
+strip_default="strip"
+yasmexe_default="yasm"
+windres_default="windres"
+
+# OS
+target_os_default=$(tolower $(uname -s))
+host_os=$target_os_default
+
+# machine
+if test "$target_os_default" = aix; then
+    arch_default=$(uname -p)
+    strip_default="strip -X32_64"
+else
+    arch_default=$(uname -m)
+fi
+cpu="generic"
+intrinsics="none"
+
+# configurable options
+enable $PROGRAM_LIST
+enable $DOCUMENT_LIST
+enable $EXAMPLE_LIST
+enable $(filter_out avresample $LIBRARY_LIST)
+enable stripping
+
+enable asm
+enable debug
+enable doc
+enable faan faandct faanidct
+enable optimizations
+enable runtime_cpudetect
+enable safe_bitstream_reader
+enable static
+enable swscale_alpha
+enable valgrind_backtrace
+
+sws_max_filter_size_default=256
+set_default sws_max_filter_size
+
+# Enable platform codecs by default.
+enable audiotoolbox
+
+# Enable hwaccels by default.
+enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
+enable xlib
+
+enable vda_framework videotoolbox videotoolbox_encoder
+
+# build settings
+SHFLAGS='-shared -Wl,-soname,$$(@F)'
+LIBPREF="lib"
+LIBSUF=".a"
+FULLNAME='$(NAME)$(BUILDSUF)'
+LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
+SLIBPREF="lib"
+SLIBSUF=".so"
+SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
+SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
+SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
+LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
+SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
+SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
+
+asflags_filter=echo
+cflags_filter=echo
+ldflags_filter=echo
+
+AS_C='-c'
+AS_O='-o $@'
+CC_C='-c'
+CC_E='-E -o $@'
+CC_O='-o $@'
+CXX_C='-c'
+CXX_O='-o $@'
+OBJCC_C='-c'
+OBJCC_E='-E -o $@'
+OBJCC_O='-o $@'
+LD_O='-o $@'
+LD_LIB='-l%'
+LD_PATH='-L'
+HOSTCC_C='-c'
+HOSTCC_E='-E -o $@'
+HOSTCC_O='-o $@'
+HOSTLD_O='-o $@'
+
+host_libs='-lm'
+host_cflags_filter=echo
+host_ldflags_filter=echo
+
+target_path='$(CURDIR)'
+
+# since the object filename is not given with the -MM flag, the compiler
+# is only able to print the basename, and we must add the path ourselves
+DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
+DEPFLAGS='-MM'
+
+# find source path
+if test -f configure; then
+    source_path=.
+else
+    source_path=$(cd $(dirname "$0"); pwd)
+    case "$source_path" in
+        *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
+    esac
+    test -e "$source_path/config.h" &&
+        die "Out of tree builds are impossible with config.h in source dir."
+fi
+
+for v in "$@"; do
+    r=${v#*=}
+    l=${v%"$r"}
+    r=$(sh_quote "$r")
+    FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
+done
+
+find_things(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
+}
+
+ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
+DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
+HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
+PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
+MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
+DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
+OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
+INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
+FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
+
+find_things_extern(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
+}
+
+BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
+PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
+
+ALL_COMPONENTS="
+    $BSF_LIST
+    $DECODER_LIST
+    $DEMUXER_LIST
+    $ENCODER_LIST
+    $FILTER_LIST
+    $HWACCEL_LIST
+    $INDEV_LIST
+    $MUXER_LIST
+    $OUTDEV_LIST
+    $PARSER_LIST
+    $PROTOCOL_LIST
+"
+
+for n in $COMPONENT_LIST; do
+    v=$(toupper ${n%s})_LIST
+    eval enable \$$v
+    eval ${n}_if_any="\$$v"
+done
+
+enable $ARCH_EXT_LIST
+
+die_unknown(){
+    echo "Unknown option \"$1\"."
+    echo "See $0 --help for available options."
+    exit 1
+}
+
+print_in_columns() {
+    cols=$(expr $ncols / 24)
+    cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
+}
+
+show_list() {
+    suffix=_$1
+    shift
+    echo $* | sed s/$suffix//g | print_in_columns
+    exit 0
+}
+
+rand_list(){
+    IFS=', '
+    set -- $*
+    unset IFS
+    for thing; do
+        comp=${thing%:*}
+        prob=${thing#$comp}
+        prob=${prob#:}
+        is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
+        echo "prob ${prob:-0.5}"
+        printf '%s\n' $comp
+    done
+}
+
+do_random(){
+    action=$1
+    shift
+    random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
+    $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
+}
+
+for opt do
+    optval="${opt#*=}"
+    case "$opt" in
+        --extra-ldflags=*)
+            add_ldflags $optval
+        ;;
+        --extra-ldexeflags=*)
+            add_ldexeflags $optval
+        ;;
+        --extra-ldlibflags=*)
+            add_ldlibflags $optval
+        ;;
+        --extra-libs=*)
+            add_extralibs $optval
+        ;;
+        --disable-devices)
+            disable $INDEV_LIST $OUTDEV_LIST
+        ;;
+        --enable-debug=*)
+            debuglevel="$optval"
+        ;;
+        --disable-programs)
+            disable $PROGRAM_LIST
+        ;;
+        --disable-everything)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+        ;;
+        --disable-all)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+            disable $LIBRARY_LIST $PROGRAM_LIST doc
+            enable avutil
+        ;;
+        --enable-random|--disable-random)
+            action=${opt%%-random}
+            do_random ${action#--} $COMPONENT_LIST
+        ;;
+        --enable-random=*|--disable-random=*)
+            action=${opt%%-random=*}
+            do_random ${action#--} $optval
+        ;;
+        --enable-*=*|--disable-*=*)
+            eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
+            is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
+            eval list=\$$(toupper $thing)_LIST
+            name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
+            list=$(filter "$name" $list)
+            [ "$list" = "" ] && warn "Option $opt did not match anything"
+            $action $list
+        ;;
+        --enable-?*|--disable-?*)
+            eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
+            if is_in $option $COMPONENT_LIST; then
+                test $action = disable && action=unset
+                eval $action \$$(toupper ${option%s})_LIST
+            elif is_in $option $CMDLINE_SELECT; then
+                $action $option
+            else
+                die_unknown $opt
+            fi
+        ;;
+        --list-*)
+            NAME="${opt#--list-}"
+            is_in $NAME $COMPONENT_LIST || die_unknown $opt
+            NAME=${NAME%s}
+            eval show_list $NAME \$$(toupper $NAME)_LIST
+        ;;
+        --help|-h) show_help
+        ;;
+        --fatal-warnings) enable fatal_warnings
+        ;;
+        *)
+            optname="${opt%%=*}"
+            optname="${optname#--}"
+            optname=$(echo "$optname" | sed 's/-/_/g')
+            if is_in $optname $CMDLINE_SET; then
+                eval $optname='$optval'
+            elif is_in $optname $CMDLINE_APPEND; then
+                append $optname "$optval"
+            else
+                die_unknown $opt
+            fi
+        ;;
+    esac
+done
+
+for e in $env; do
+    eval "export $e"
+done
+
+disabled logging && logfile=/dev/null
+
+# Disable all the library-specific components if the library itself
+# is disabled, see AVCODEC_LIST and following _LIST variables.
+
+disable_components(){
+    disabled ${1} && disable $(
+        eval components="\$$(toupper ${1})_COMPONENTS"
+        map 'eval echo \${$(toupper ${v%s})_LIST}' $components
+    )
+}
+
+map 'disable_components $v' $LIBRARY_LIST
+
+echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
+set >> $logfile
+
+test -n "$valgrind" && toolchain="valgrind-memcheck"
+
+case "$toolchain" in
+    *-asan)
+        cc_default="${toolchain%-asan}"
+        add_cflags  -fsanitize=address
+        add_ldflags -fsanitize=address
+    ;;
+    *-msan)
+        cc_default="${toolchain%-msan}"
+        add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
+        add_ldflags -fsanitize=memory
+    ;;
+    *-tsan)
+        cc_default="${toolchain%-tsan}"
+        add_cflags  -fsanitize=thread -pie
+        add_ldflags -fsanitize=thread -pie
+        case "$toolchain" in
+            gcc-tsan)
+                add_cflags  -fPIC
+                add_ldflags -fPIC
+                ;;
+        esac
+    ;;
+    *-usan)
+        cc_default="${toolchain%-usan}"
+        add_cflags  -fsanitize=undefined
+        add_ldflags -fsanitize=undefined
+    ;;
+    valgrind-*)
+        target_exec_default="valgrind"
+        case "$toolchain" in
+            valgrind-massif)
+                target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
+                ;;
+            valgrind-memcheck)
+                target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
+                ;;
+        esac
+    ;;
+    msvc)
+        # Check whether the current MSVC version needs the C99 converter.
+        # From MSVC 2013 (compiler major version 18) onwards, it does actually
+        # support enough of C99 to build ffmpeg. Default to the new
+        # behaviour if the regexp was unable to match anything, since this
+        # successfully parses the version number of existing supported
+        # versions that require the converter (MSVC 2010 and 2012).
+        cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
+        if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
+            cc_default="cl"
+        else
+            cc_default="c99wrap cl"
+        fi
+        ld_default="$source_path/compat/windows/mslink"
+        nm_default="dumpbin -symbols"
+        ar_default="lib"
+        case "$arch" in
+        arm*)
+            as_default="armasm"
+            ;;
+        esac
+        target_os_default="win32"
+        # Use a relative path for TMPDIR. This makes sure all the
+        # ffconf temp files are written with a relative path, avoiding
+        # issues with msys/win32 path conversion for MSVC parameters
+        # such as -Fo<file> or -out:<file>.
+        TMPDIR=.
+    ;;
+    icl)
+        cc_default="icl"
+        ld_default="xilink"
+        nm_default="dumpbin -symbols"
+        ar_default="xilib"
+        target_os_default="win32"
+        TMPDIR=.
+    ;;
+    gcov)
+        add_cflags  -fprofile-arcs -ftest-coverage
+        add_ldflags -fprofile-arcs -ftest-coverage
+    ;;
+    llvm-cov)
+        add_cflags -fprofile-arcs -ftest-coverage
+        add_ldflags --coverage
+    ;;
+    hardened)
+        add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
+        add_cflags   -fno-strict-overflow -fstack-protector-all
+        add_ldflags  -Wl,-z,relro -Wl,-z,now
+    ;;
+    ?*)
+        die "Unknown toolchain $toolchain"
+    ;;
+esac
+
+test -n "$cross_prefix" && enable cross_compile
+
+if enabled cross_compile; then
+    test -n "$arch" && test -n "$target_os" ||
+        die "Must specify target arch and OS when cross-compiling"
+fi
+
+ar_default="${cross_prefix}${ar_default}"
+cc_default="${cross_prefix}${cc_default}"
+cxx_default="${cross_prefix}${cxx_default}"
+nm_default="${cross_prefix}${nm_default}"
+pkg_config_default="${cross_prefix}${pkg_config_default}"
+if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
+    ranlib_default="${cross_prefix}${ranlib_default} -D"
+else
+    ranlib_default="${cross_prefix}${ranlib_default}"
+fi
+strip_default="${cross_prefix}${strip_default}"
+windres_default="${cross_prefix}${windres_default}"
+
+sysinclude_default="${sysroot}/usr/include"
+
+set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
+    target_exec target_os yasmexe
+enabled cross_compile || host_cc_default=$cc
+set_default host_cc
+
+pkg_config_fail_message=""
+if ! $pkg_config --version >/dev/null 2>&1; then
+    warn "$pkg_config not found, library detection may fail."
+    pkg_config=false
+elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
+    pkg_config_fail_message="
+Note: When building a static binary, add --pkg-config-flags=\"--static\"."
+fi
+
+if test $doxygen != $doxygen_default && \
+  ! $doxygen --version >/dev/null 2>&1; then
+    warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
+fi
+
+exesuf() {
+    case $1 in
+        mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
+    esac
+}
+
+EXESUF=$(exesuf $target_os)
+HOSTEXESUF=$(exesuf $host_os)
+
+# set temporary file name
+: ${TMPDIR:=$TEMPDIR}
+: ${TMPDIR:=$TMP}
+: ${TMPDIR:=/tmp}
+
+if [ -n "$tempprefix" ] ; then
+    mktemp(){
+        echo $tempprefix.${HOSTNAME}.${UID}
+    }
+elif ! check_cmd mktemp -u XXXXXX; then
+    # simple replacement for missing mktemp
+    # NOT SAFE FOR GENERAL USE
+    mktemp(){
+        echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
+    }
+fi
+
+tmpfile(){
+    tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
+        (set -C; exec > $tmp) 2>/dev/null ||
+        die "Unable to create temporary file in $TMPDIR."
+    append TMPFILES $tmp
+    eval $1=$tmp
+}
+
+trap 'rm -f -- $TMPFILES' EXIT
+
+tmpfile TMPASM .asm
+tmpfile TMPC   .c
+tmpfile TMPCPP .cpp
+tmpfile TMPE   $EXESUF
+tmpfile TMPH   .h
+tmpfile TMPM   .m
+tmpfile TMPO   .o
+tmpfile TMPS   .S
+tmpfile TMPSH  .sh
+tmpfile TMPV   .ver
+
+unset -f mktemp
+
+chmod +x $TMPE
+
+# make sure we can execute files in $TMPDIR
+cat > $TMPSH 2>> $logfile <<EOF
+#! /bin/sh
+EOF
+chmod +x $TMPSH >> $logfile 2>&1
+if ! $TMPSH >> $logfile 2>&1; then
+    cat <<EOF
+Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
+variable to another directory and make sure that it is not mounted noexec.
+EOF
+    die "Sanity test failed."
+fi
+
+armasm_flags(){
+    for flag; do
+        case $flag in
+            # Filter out MSVC cl.exe options from cflags that shouldn't
+            # be passed to gas-preprocessor
+            -M[TD]*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+ccc_flags(){
+    for flag; do
+        case $flag in
+            -std=c99)           echo -c99                       ;;
+            -mcpu=*)            echo -arch ${flag#*=}           ;;
+            -mieee)             echo -ieee                      ;;
+            -O*|-fast)          echo $flag                      ;;
+            -fno-math-errno)    echo -assume nomath_errno       ;;
+            -g)                 echo -g3                        ;;
+            -Wall)              echo -msg_enable level2         ;;
+            -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
+            -Wl,*)              echo $flag                      ;;
+            -f*|-W*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+cparser_flags(){
+    for flag; do
+        case $flag in
+            -Wno-switch)             echo -Wno-switch-enum ;;
+            -Wno-format-zero-length) ;;
+            -Wdisabled-optimization) ;;
+            -Wno-pointer-sign)       echo -Wno-other ;;
+            *)                       echo $flag ;;
+        esac
+    done
+}
+
+msvc_common_flags(){
+    for flag; do
+        case $flag in
+            # In addition to specifying certain flags under the compiler
+            # specific filters, they must be specified here as well or else the
+            # generic catch all at the bottom will print the original flag.
+            -Wall)                ;;
+            -std=c99)             ;;
+            # Common flags
+            -fomit-frame-pointer) ;;
+            -g)                   echo -Z7 ;;
+            -fno-math-errno)      ;;
+            -fno-common)          ;;
+            -fno-signed-zeros)    ;;
+            -fPIC)                ;;
+            -mthumb)              ;;
+            -march=*)             ;;
+            -lz)                  echo zlib.lib ;;
+            -lavifil32)           echo vfw32.lib ;;
+            -lavicap32)           echo vfw32.lib user32.lib ;;
+            -lx264)               echo libx264.lib ;;
+            -l*)                  echo ${flag#-l}.lib ;;
+            -LARGEADDRESSAWARE)   echo $flag ;;
+            -L*)                  echo -libpath:${flag#-L} ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+msvc_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
+                                       -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
+                                       -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
+                                       -wd4307 \
+                                       -wd4273 -wd4554 -wd4701 ;;
+        esac
+    done
+}
+
+icl_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            # Despite what Intel's documentation says -Wall, which is supported
+            # on Windows, does enable remarks so disable them here.
+            -Wall)                echo $flag -Qdiag-disable:remark ;;
+            -std=c99)             echo -Qstd=c99 ;;
+            -flto)                echo -ipo ;;
+        esac
+    done
+}
+
+icc_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -ipo ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+pgi_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
+            -fomit-frame-pointer) echo -Mnoframe ;;
+            -g)                   echo -gopt ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+suncc_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    native)                   echo -xtarget=native       ;;
+                    v9|niagara)               echo -xarch=sparc          ;;
+                    ultrasparc)               echo -xarch=sparcvis       ;;
+                    ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
+                    i586|pentium)             echo -xchip=pentium        ;;
+                    i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
+                    pentium3*|c3-2)           echo -xtarget=pentium3     ;;
+                    pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
+                    pentium4*)          echo -xtarget=pentium4           ;;
+                    prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
+                    *-sse3)             echo -xarch=sse3                 ;;
+                    core2)              echo -xarch=ssse3 -xchip=core2   ;;
+                    bonnell)                   echo -xarch=ssse3         ;;
+                    corei7|nehalem)            echo -xtarget=nehalem     ;;
+                    westmere)                  echo -xtarget=westmere    ;;
+                    silvermont)                echo -xarch=sse4_2        ;;
+                    corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
+                    core-avx*|ivybridge|haswell|broadwell)
+                                               echo -xarch=avx           ;;
+                    amdfam10|barcelona)        echo -xtarget=barcelona   ;;
+                    btver1)                    echo -xarch=amdsse4a      ;;
+                    btver2|bdver*)             echo -xarch=avx           ;;
+                    athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
+                    k8|opteron|athlon64|athlon-fx)
+                                               echo -xarch=sse2a         ;;
+                    athlon*)                   echo -xarch=pentium_proa  ;;
+                esac
+                ;;
+            -std=c99)             echo -xc99              ;;
+            -fomit-frame-pointer) echo -xregs=frameptr    ;;
+            -fPIC)                echo -KPIC -xcode=pic32 ;;
+            -W*,*)                echo $flag              ;;
+            -f*-*|-W*|-mimpure-text)                      ;;
+            -shared)              echo -G                 ;;
+            *)                    echo $flag              ;;
+        esac
+    done
+}
+
+tms470_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    armv7-a|cortex-a*)      echo -mv=7a8 ;;
+                    armv7-r|cortex-r*)      echo -mv=7r4 ;;
+                    armv7-m|cortex-m*)      echo -mv=7m3 ;;
+                    armv6*|arm11*)          echo -mv=6   ;;
+                    armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
+                                            echo -mv=5e  ;;
+                    armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
+                esac
+                ;;
+            -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
+            -mfpu=vfp)      echo --float_support=vfpv2        ;;
+            -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
+            -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
+            -msoft-float)   echo --float_support=vfplib       ;;
+            -O[0-3]|-mf=*)  echo $flag                        ;;
+            -g)             echo -g -mn                       ;;
+            -pds=*)         echo $flag                        ;;
+            -D*|-I*)        echo $flag                        ;;
+            --gcc|--abi=*)  echo $flag                        ;;
+            -me)            echo $flag                        ;;
+        esac
+    done
+}
+
+probe_cc(){
+    pfx=$1
+    _cc=$2
+    first=$3
+
+    unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
+    unset _ld_o _ldflags _ld_lib _ld_path
+    unset _depflags _DEPCMD _DEPFLAGS
+    _flags_filter=echo
+
+    if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
+        true # no-op to avoid reading stdin in following checks
+    elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
+        _type=llvm_gcc
+        gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
+        _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -v 2>&1 | grep -qi ^gcc; then
+        _type=gcc
+        gcc_version=$($_cc --version | head -n1)
+        gcc_basever=$($_cc -dumpversion)
+        gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
+        gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
+        _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
+        case $gcc_basever in
+            2) ;;
+            2.*) ;;
+            *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
+        esac
+        if [ "$first" = true ]; then
+            case $gcc_basever in
+                4.2*)
+                warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
+            esac
+        fi
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc --version 2>/dev/null | grep -q ^icc; then
+        _type=icc
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+        _cflags_noopt='-O1'
+        _flags_filter=icc_flags
+    elif $_cc -v 2>&1 | grep -q xlc; then
+        _type=xlc
+        _ident=$($_cc -qversion 2>/dev/null | head -n1)
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -qcompact'
+    elif $_cc -V 2>/dev/null | grep -q Compaq; then
+        _type=ccc
+        _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
+        _DEPFLAGS='-M'
+        _cflags_speed='-fast'
+        _cflags_size='-O1'
+        _flags_filter=ccc_flags
+    elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
+        test -d "$sysroot" || die "No valid sysroot specified."
+        _type=armcc
+        _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
+        armcc_conf="$PWD/armcc.conf"
+        $_cc --arm_linux_configure                 \
+             --arm_linux_config_file="$armcc_conf" \
+             --configure_sysroot="$sysroot"        \
+             --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
+             die "Error creating armcc configuration file."
+        $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
+        _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
+        as_default="${cross_prefix}gcc"
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
+        _type=tms470
+        _ident=$($_cc -version | head -n1 | tr -s ' ')
+        _flags='--gcc --abi=eabi -me'
+        _cc_e='-ppl -fe=$@'
+        _cc_o='-fe=$@'
+        _depflags='-ppa -ppd=$(@:.o=.d)'
+        _cflags_speed='-O3 -mf=5'
+        _cflags_size='-O3 -mf=2'
+        _flags_filter=tms470_flags
+    elif $_cc -v 2>&1 | grep -q clang; then
+        _type=clang
+        _ident=$($_cc --version 2>/dev/null | head -n1)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -V 2>&1 | grep -q Sun; then
+        _type=suncc
+        _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
+        _DEPFLAGS='-xM1 -xc99'
+        _ldflags='-std=c99'
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -xspace'
+        _flags_filter=suncc_flags
+    elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
+        _type=pathscale
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization'
+    elif $_cc -v 2>&1 | grep -q Open64; then
+        _type=open64
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
+    elif $_cc -V 2>&1 | grep -q Portland; then
+        _type=pgi
+        _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
+        opt_common='-alias=ansi -Mdse -Mlre -Mpre'
+        _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
+        _cflags_size="-O2 -Munroll=c:1 $opt_common"
+        _cflags_noopt="-O"
+        _flags_filter=pgi_flags
+    elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
+        _type=armasm
+        _ident=$($_cc | head -n1)
+        # 4509: "This form of conditional instruction is deprecated"
+        _flags="-nologo -ignore 4509"
+        _flags_filter=armasm_flags
+    elif $_cc 2>&1 | grep -q Intel; then
+        _type=icl
+        _ident=$($_cc 2>&1 | head -n1)
+        _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
+        # Not only is O3 broken on 13.x+ but it is slower on all previous
+        # versions (tested) as well.
+        _cflags_speed="-O2"
+        _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
+        if $_cc 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P'
+        _flags_filter=icl_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        # -Qdiag-error to make icl error when seeing certain unknown arguments
+        _flags='-nologo -Qdiag-error:4044,10157'
+        # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
+        # with MSVC which enables it by default.
+        _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
+        disable stripping
+    elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
+        _type=msvc
+        _ident=$($_cc 2>&1 | head -n1)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
+        _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
+        _cflags_speed="-O2"
+        _cflags_size="-O1"
+        if $_cc -nologo- 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P -Fi$@'
+        _flags_filter=msvc_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        _flags='-nologo'
+        _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
+        disable stripping
+    elif $_cc --version 2>/dev/null | grep -q ^cparser; then
+        _type=cparser
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O4'
+        _cflags_size='-O2'
+        _flags_filter=cparser_flags
+    fi
+
+    eval ${pfx}_type=\$_type
+    eval ${pfx}_ident=\$_ident
+}
+
+set_ccvars(){
+    eval ${1}_C=\${_cc_c-\${${1}_C}}
+    eval ${1}_E=\${_cc_e-\${${1}_E}}
+    eval ${1}_O=\${_cc_o-\${${1}_O}}
+
+    if [ -n "$_depflags" ]; then
+        eval ${1}_DEPFLAGS=\$_depflags
+    else
+        eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
+        eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
+        eval DEP${1}FLAGS=\$_flags
+    fi
+}
+
+probe_cc cc "$cc" "true"
+cflags_filter=$_flags_filter
+cflags_speed=$_cflags_speed
+cflags_size=$_cflags_size
+cflags_noopt=$_cflags_noopt
+add_cflags $_flags $_cflags
+cc_ldflags=$_ldflags
+set_ccvars CC
+
+probe_cc hostcc "$host_cc"
+host_cflags_filter=$_flags_filter
+add_host_cflags  $_flags $_cflags
+set_ccvars HOSTCC
+
+test -n "$cc_type" && enable $cc_type ||
+    warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
+
+: ${as_default:=$cc}
+: ${objcc_default:=$cc}
+: ${dep_cc_default:=$cc}
+: ${ld_default:=$cc}
+: ${host_ld_default:=$host_cc}
+set_default ar as objcc dep_cc ld ln_s host_ld windres
+
+probe_cc as "$as"
+asflags_filter=$_flags_filter
+add_asflags $_flags $_cflags
+set_ccvars AS
+
+probe_cc objcc "$objcc"
+objcflags_filter=$_flags_filter
+add_objcflags $_flags $_cflags
+set_ccvars OBJC
+
+probe_cc ld "$ld"
+ldflags_filter=$_flags_filter
+add_ldflags $_flags $_ldflags
+test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
+LD_O=${_ld_o-$LD_O}
+LD_LIB=${_ld_lib-$LD_LIB}
+LD_PATH=${_ld_path-$LD_PATH}
+
+probe_cc hostld "$host_ld"
+host_ldflags_filter=$_flags_filter
+add_host_ldflags $_flags $_ldflags
+HOSTLD_O=${_ld_o-$HOSTLD_O}
+
+if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
+    probe_cc depcc "$dep_cc"
+    CCDEP=${_DEPCMD:-$DEPCMD}
+    CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
+    DEPCCFLAGS=$_flags
+fi
+
+if $ar 2>&1 | grep -q Microsoft; then
+    arflags="-nologo"
+    ar_o='-out:$@'
+elif $ar 2>&1 | grep -q 'Texas Instruments'; then
+    arflags="rq"
+    ar_o='$@'
+elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
+    arflags='-Xany -r -c'
+    ar_o='$@'
+elif $ar 2>&1 | grep -q "\[D\] "; then
+    arflags="rcD"
+    ar_o='$@'
+else
+    arflags="rc"
+    ar_o='$@'
+fi
+
+add_cflags $extra_cflags
+add_cxxflags $extra_cxxflags
+add_objcflags $extra_objcflags
+add_asflags $extra_cflags
+
+if test -n "$sysroot"; then
+    case "$cc_type" in
+        gcc|llvm_gcc|clang)
+            add_cppflags --sysroot="$sysroot"
+            add_ldflags --sysroot="$sysroot"
+# On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
+            add_cppflags -isysroot "$sysroot"
+            add_ldflags -isysroot "$sysroot"
+        ;;
+        tms470)
+            add_cppflags -I"$sysinclude"
+            add_ldflags  --sysroot="$sysroot"
+        ;;
+    esac
+fi
+
+if test "$cpu" = host; then
+    enabled cross_compile &&
+        die "--cpu=host makes no sense when cross-compiling."
+
+    case "$cc_type" in
+        gcc|llvm_gcc)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*$1=/{
+                            s/.*$1=\\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march || check_native -mcpu)
+        ;;
+        clang)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*-target-cpu /{
+                            s/.*-target-cpu \\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march)
+        ;;
+    esac
+
+    test "${cpu:-host}" = host &&
+        die "--cpu=host not supported with compiler $cc"
+fi
+
+# Deal with common $arch aliases
+case "$arch" in
+    aarch64|arm64)
+        arch="aarch64"
+    ;;
+    arm*|iPad*|iPhone*)
+        arch="arm"
+    ;;
+    mips*|IP*)
+        case "$arch" in
+        *el)
+            add_cppflags -EL
+            add_ldflags -EL
+        ;;
+        *eb)
+            add_cppflags -EB
+            add_ldflags -EB
+        ;;
+        esac
+        arch="mips"
+    ;;
+    parisc*|hppa*)
+        arch="parisc"
+    ;;
+    "Power Macintosh"|ppc*|powerpc*)
+        arch="ppc"
+    ;;
+    s390|s390x)
+        arch="s390"
+    ;;
+    sh4|sh)
+        arch="sh4"
+    ;;
+    sun4u|sparc*)
+        arch="sparc"
+    ;;
+    tilegx|tile-gx)
+        arch="tilegx"
+    ;;
+    i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
+        arch="x86"
+    ;;
+esac
+
+is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
+enable $arch
+
+# Add processor-specific flags
+if enabled aarch64; then
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled alpha; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled arm; then
+
+    check_arm_arch() {
+        check_cpp_condition stddef.h \
+            "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
+            $cpuflags
+    }
+
+    probe_arm_arch() {
+        if   check_arm_arch 4;        then echo armv4
+        elif check_arm_arch 4T;       then echo armv4t
+        elif check_arm_arch 5;        then echo armv5
+        elif check_arm_arch 5E;       then echo armv5e
+        elif check_arm_arch 5T;       then echo armv5t
+        elif check_arm_arch 5TE;      then echo armv5te
+        elif check_arm_arch 5TEJ;     then echo armv5te
+        elif check_arm_arch 6;        then echo armv6
+        elif check_arm_arch 6J;       then echo armv6j
+        elif check_arm_arch 6K;       then echo armv6k
+        elif check_arm_arch 6Z;       then echo armv6z
+        elif check_arm_arch 6ZK;      then echo armv6zk
+        elif check_arm_arch 6T2;      then echo armv6t2
+        elif check_arm_arch 7;        then echo armv7
+        elif check_arm_arch 7A  7_A;  then echo armv7-a
+        elif check_arm_arch 7S;       then echo armv7-a
+        elif check_arm_arch 7R  7_R;  then echo armv7-r
+        elif check_arm_arch 7M  7_M;  then echo armv7-m
+        elif check_arm_arch 7EM 7E_M; then echo armv7-m
+        elif check_arm_arch 8A  8_A;  then echo armv8-a
+        fi
+    }
+
+    [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+            subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+            case $cpu in
+                cortex-a*)                               subarch=armv7a  ;;
+                cortex-r*)                               subarch=armv7r  ;;
+                cortex-m*)                 enable thumb; subarch=armv7m  ;;
+                arm11*)                                  subarch=armv6   ;;
+                arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
+                armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
+                *)                             subarch=$(probe_arm_arch) ;;
+            esac
+        ;;
+    esac
+
+    case "$subarch" in
+        armv5t*)    enable fast_clz                ;;
+        armv[6-8]*)
+            enable fast_clz
+            disabled fast_unaligned || enable fast_unaligned
+            ;;
+    esac
+
+elif enabled avr32; then
+
+    case $cpu in
+        ap7[02]0[0-2])
+            subarch="avr32_ap"
+            cpuflags="-mpart=$cpu"
+        ;;
+        ap)
+            subarch="avr32_ap"
+            cpuflags="-march=$cpu"
+        ;;
+        uc3[ab]*)
+            subarch="avr32_uc"
+            cpuflags="-mcpu=$cpu"
+        ;;
+        uc)
+            subarch="avr32_uc"
+            cpuflags="-march=$cpu"
+        ;;
+    esac
+
+elif enabled bfin; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled mips; then
+
+    cpuflags="-march=$cpu"
+
+    if [ "$cpu" != "generic" ]; then
+        disable mips32r2
+        disable mips32r5
+        disable mips64r2
+        disable mips32r6
+        disable mips64r6
+        disable loongson2
+        disable loongson3
+
+        case $cpu in
+            24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
+                enable mips32r2
+                disable msa
+            ;;
+            p5600|i6400)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            loongson*)
+                enable loongson2
+                enable loongson3
+                enable local_aligned_8 local_aligned_16 local_aligned_32
+                enable simd_align_16
+                enable fast_64bit
+                enable fast_clz
+                enable fast_cmov
+                enable fast_unaligned
+                disable aligned_stack
+                case $cpu in
+                    loongson3*)
+                        cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2e)
+                        cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2f)
+                        cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
+                    ;;
+                esac
+            ;;
+            *)
+                # Unknown CPU. Disable everything.
+                warn "unknown CPU. Disabling all MIPS optimizations."
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+                disable msa
+                disable mmi
+            ;;
+        esac
+
+        case $cpu in
+            24kc)
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kf*)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kec|34kc|1004kc)
+                disable mipsfpu
+                disable mipsdspr2
+            ;;
+            24kef*|34kf*|1004kf*)
+                disable mipsdspr2
+            ;;
+            74kc)
+                disable mipsfpu
+            ;;
+            p5600)
+                enable mips32r5
+                check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
+            ;;
+            i6400)
+                enable mips64r6
+                check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
+            ;;
+        esac
+    else
+        # We do not disable anything. Is up to the user to disable the unwanted features.
+        warn 'generic cpu selected'
+    fi
+
+elif enabled ppc; then
+
+    disable ldbrx
+
+    case $(tolower $cpu) in
+        601|ppc601|powerpc601)
+            cpuflags="-mcpu=601"
+            disable altivec
+        ;;
+        603*|ppc603*|powerpc603*)
+            cpuflags="-mcpu=603"
+            disable altivec
+        ;;
+        604*|ppc604*|powerpc604*)
+            cpuflags="-mcpu=604"
+            disable altivec
+        ;;
+        g3|75*|ppc75*|powerpc75*)
+            cpuflags="-mcpu=750"
+            disable altivec
+        ;;
+        g4|745*|ppc745*|powerpc745*)
+            cpuflags="-mcpu=7450"
+            disable vsx
+        ;;
+        74*|ppc74*|powerpc74*)
+            cpuflags="-mcpu=7400"
+            disable vsx
+        ;;
+        g5|970|ppc970|powerpc970)
+            cpuflags="-mcpu=970"
+            disable vsx
+        ;;
+        power[3-6]*)
+            cpuflags="-mcpu=$cpu"
+            disable vsx
+        ;;
+        power[7-8]*)
+            cpuflags="-mcpu=$cpu"
+        ;;
+        cell)
+            cpuflags="-mcpu=cell"
+            enable ldbrx
+            disable vsx
+        ;;
+        e500mc)
+            cpuflags="-mcpu=e500mc"
+            disable altivec
+        ;;
+        e500v2)
+            cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
+            disable altivec
+            disable dcbzl
+        ;;
+        e500)
+            cpuflags="-mcpu=8540 -mhard-float"
+            disable altivec
+            disable dcbzl
+        ;;
+    esac
+
+elif enabled sparc; then
+
+    case $cpu in
+        cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
+            cpuflags="-mcpu=$cpu"
+        ;;
+        ultrasparc*|niagara[234])
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled x86; then
+
+    case $cpu in
+        i[345]86|pentium)
+            cpuflags="-march=$cpu"
+            disable i686
+            disable mmx
+        ;;
+        # targets that do NOT support nopl and conditional mov (cmov)
+        pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
+            cpuflags="-march=$cpu"
+            disable i686
+        ;;
+        # targets that do support nopl and conditional mov (cmov)
+        i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
+        |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
+            cpuflags="-march=$cpu"
+            enable i686
+            enable fast_cmov
+        ;;
+        # targets that do support conditional mov but on which it's slow
+        pentium4|pentium4m|prescott|nocona)
+            cpuflags="-march=$cpu"
+            enable i686
+            disable fast_cmov
+        ;;
+    esac
+
+fi
+
+if [ "$cpu" != generic ]; then
+    add_cflags  $cpuflags
+    add_asflags $cpuflags
+    test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
+fi
+
+# compiler sanity check
+check_exec <<EOF
+int main(void){ return 0; }
+EOF
+if test "$?" != 0; then
+    echo "$cc is unable to create an executable file."
+    if test -z "$cross_prefix" && ! enabled cross_compile ; then
+        echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
+        echo "Only do this if you know what cross compiling means."
+    fi
+    die "C compiler test failed."
+fi
+
+add_cppflags -D_ISOC99_SOURCE
+add_cxxflags -D__STDC_CONSTANT_MACROS
+add_cxxflags -std=c++98
+check_cflags -std=c99
+check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
+#include <stdlib.h>
+EOF
+check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
+#include <stdlib.h>
+EOF
+
+add_host_cppflags -D_ISOC99_SOURCE
+check_host_cflags -std=c99
+check_host_cflags -Wall
+check_host_cflags -O3
+
+check_64bit(){
+    arch32=$1
+    arch64=$2
+    expr=$3
+    check_code cc "" "int test[2*($expr) - 1]" &&
+        subarch=$arch64 || subarch=$arch32
+}
+
+case "$arch" in
+    aarch64|alpha|ia64)
+        spic=$shared
+    ;;
+    mips)
+        check_64bit mips mips64 '_MIPS_SIM > 1'
+        spic=$shared
+    ;;
+    parisc)
+        check_64bit parisc parisc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    ppc)
+        check_64bit ppc ppc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    s390)
+        check_64bit s390 s390x 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    sparc)
+        check_64bit sparc sparc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    x86)
+        check_64bit x86_32 x86_64 'sizeof(void *) > 4'
+        # Treat x32 as x64 for now. Note it also needs spic=$shared
+        test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
+            subarch=x86_64
+        if test "$subarch" = "x86_64"; then
+            spic=$shared
+        fi
+    ;;
+    ppc)
+        check_cc <<EOF && subarch="ppc64"
+        int test[(int)sizeof(char*) - 7];
+EOF
+    ;;
+esac
+
+enable $subarch
+enabled spic && enable_weak pic
+
+# OS specific
+case $target_os in
+    aix)
+        SHFLAGS=-shared
+        add_cppflags '-I\$(SRC_PATH)/compat/aix'
+        enabled shared && add_ldflags -Wl,-brtl
+        ;;
+    android)
+        disable symver
+        enable section_data_rel_ro
+        SLIB_INSTALL_NAME='$(SLIBNAME)'
+        SLIB_INSTALL_LINKS=
+        SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
+        ;;
+    haiku)
+        prefix_default="/boot/common"
+        network_extralibs="-lnetwork"
+        host_libs=
+        ;;
+    sunos)
+        SHFLAGS='-shared -Wl,-h,$$(@F)'
+        enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
+        network_extralibs="-lsocket -lnsl"
+        add_cppflags -D__EXTENSIONS__
+        # When using suncc to build, the Solaris linker will mark
+        # an executable with each instruction set encountered by
+        # the Solaris assembler.  As our libraries contain their own
+        # guards for processor-specific code, instead suppress
+        # generation of the HWCAPS ELF section on Solaris x86 only.
+        enabled_all suncc x86 &&
+            echo "hwcap_1 = OVERRIDE;" > mapfile &&
+            add_ldflags -Wl,-M,mapfile
+        nm_default='nm -P -g'
+        SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
+        ;;
+    netbsd)
+        disable symver
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        enabled gcc || check_ldflags -Wl,-zmuldefs
+        ;;
+    openbsd|bitrig)
+        disable symver
+        SHFLAGS='-shared'
+        SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
+        SLIB_INSTALL_LINKS=
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        ;;
+    dragonfly)
+        disable symver
+        ;;
+    freebsd)
+        ;;
+    bsd/os)
+        add_extralibs -lpoll -lgnugetopt
+        strip="strip -d"
+        ;;
+    darwin)
+        enabled ppc && add_asflags -force_cpusubtype_ALL
+        install_name_dir_default='$(SHLIBDIR)'
+        SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
+        enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
+        strip="${strip} -x"
+        add_ldflags -Wl,-dynamic,-search_paths_first
+        SLIBSUF=".dylib"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
+        objformat="macho"
+        enabled x86_64 && objformat="macho64"
+        enabled_any pic shared x86_64 ||
+            { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
+        check_header dispatch/dispatch.h &&
+            add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
+        ;;
+    msys*)
+        die "Native MSYS builds are discouraged, please use the MINGW environment."
+        ;;
+    mingw32*|mingw64*)
+        if test $target_os = "mingw32ce"; then
+            disable network
+        else
+            target_os=mingw32
+        fi
+        decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
+        decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
+        LIBTARGET=i386
+        if enabled x86_64; then
+            LIBTARGET="i386:x86-64"
+        elif enabled arm; then
+            LIBTARGET=arm-wince
+        fi
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        enabled x86_32 && check_ldflags -Wl,--large-address-aware
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        dlltool="${cross_prefix}dlltool"
+        if check_cmd lib.exe -list; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+            if enabled x86_64; then
+                LIBTARGET=x64
+            fi
+        elif check_cmd $dlltool --version; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
+        fi
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        check_ldflags -Wl,--nxcompat,--dynamicbase
+        # Lets work around some stupidity in binutils.
+        # ld will strip relocations from executables even though we need them
+        # for dynamicbase (ASLR).  Using -pie does retain the reloc section
+        # however ld then forgets what the entry point should be (oops) so we
+        # have to manually (re)set it.
+        if enabled x86_32; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
+        elif enabled x86_64; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
+            check_ldflags -Wl,--high-entropy-va # binutils 2.25
+            # Set image base >4GB for extra entropy with HEASLR
+            add_ldexeflags -Wl,--image-base,0x140000000
+            append SHFLAGS -Wl,--image-base,0x180000000
+        fi
+        ;;
+    win32|win64)
+        disable symver
+        if enabled shared; then
+            # Link to the import library instead of the normal static library
+            # for shared libs.
+            LD_LIB='%.lib'
+            # Cannot build both shared and static libs with MSVC or icl.
+            disable static
+        fi
+        enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        ;;
+    cygwin*)
+        target_os=cygwin
+        shlibdir_default="$bindir_default"
+        SLIBPREF="cyg"
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
+        SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
+        objformat="win32"
+        enable dos_paths
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        ;;
+    *-dos|freedos|opendos)
+        network_extralibs="-lsocket"
+        objformat="coff"
+        enable dos_paths
+        add_cppflags -U__STRICT_ANSI__
+        ;;
+    linux)
+        enable dv1394
+        enable section_data_rel_ro
+        ;;
+    irix*)
+        target_os=irix
+        ranlib="echo ignoring ranlib"
+        ;;
+    os/2*)
+        strip="lxlite -CS"
+        objformat="aout"
+        add_cppflags -D_GNU_SOURCE
+        add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
+        SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
+        LIBSUF="_s.a"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
+            echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
+            echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
+            echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
+            emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
+        SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
+            emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
+        enable dos_paths
+        enable_weak os2threads
+        ;;
+    gnu/kfreebsd)
+        add_cppflags -D_BSD_SOURCE
+        ;;
+    gnu)
+        ;;
+    qnx)
+        add_cppflags -D_QNX_SOURCE
+        network_extralibs="-lsocket"
+        ;;
+    symbian)
+        SLIBSUF=".dll"
+        enable dos_paths
+        add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
+        add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
+        add_ldflags -Wl,--target1-abs,--no-undefined \
+                    -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
+                    -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
+        add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
+                      -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
+                      -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
+        ;;
+    osf1)
+        add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
+        ;;
+    minix)
+        ;;
+    plan9)
+        add_cppflags -D_C99_SNPRINTF_EXTENSION  \
+                     -D_REENTRANT_SOURCE        \
+                     -D_RESEARCH_SOURCE         \
+                     -DFD_SETSIZE=96            \
+                     -DHAVE_SOCK_OPTS
+        add_compat strtod.o strtod=avpriv_strtod
+        network_extralibs='-lbsd'
+        exeobjs=compat/plan9/main.o
+        disable ffserver
+        cp_f='cp'
+        ;;
+    none)
+        ;;
+    *)
+        die "Unknown OS '$target_os'."
+        ;;
+esac
+
+# test if creating links works
+link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
+link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
+mkdir "$link_dest"
+$ln_s "$link_dest" "$link_name"
+touch "$link_dest/test_file"
+if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
+    # create link to source path
+    [ -e src ] && rm src
+    $ln_s "$source_path" src
+    source_link=src
+else
+    # creating directory links doesn't work
+    # fall back to using the full source path
+    source_link="$source_path"
+fi
+# cleanup
+rm -r "$link_dest"
+rm -r "$link_name"
+
+# determine libc flavour
+
+probe_libc(){
+    pfx=$1
+    pfx_no_=${pfx%_}
+    # uclibc defines __GLIBC__, so it needs to be checked before glibc.
+    if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
+        eval ${pfx}libc_type=uclibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
+        eval ${pfx}libc_type=glibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    # MinGW headers can be installed on Cygwin, so check for newlib first.
+    elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
+        eval ${pfx}libc_type=newlib
+        add_${pfx}cppflags -U__STRICT_ANSI__
+    # MinGW64 is backwards compatible with MinGW32, so check for it first.
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
+        eval ${pfx}libc_type=mingw64
+        if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
+            add_compat msvcrt/snprintf.o
+            add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
+        fi
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
+         check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
+        eval ${pfx}libc_type=mingw32
+        check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
+            (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
+            die "ERROR: MinGW32 runtime version must be >= 3.15."
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
+        eval ${pfx}libc_type=msvcrt
+        if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
+            if [ "$pfx" = host_ ]; then
+                add_host_cppflags -Dsnprintf=_snprintf
+            else
+                add_compat strtod.o strtod=avpriv_strtod
+                add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
+                                             _snprintf=avpriv_snprintf  \
+                                             vsnprintf=avpriv_vsnprintf
+            fi
+        fi
+        # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
+        # 0x601 by default unless something else is set by the user.
+        # This can easily lead to us detecting functions only present
+        # in such new versions and producing binaries requiring windows 7.0.
+        # Therefore explicitly set the default to XP unless the user has
+        # set something else on the command line.
+        # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
+        # family. For these cases, configure is free to use any functions
+        # found in the SDK headers by default. (Alternatively, we could force
+        # _WIN32_WINNT to 0x0602 in that case.)
+        check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
+            { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
+#ifdef WINAPI_FAMILY
+#include <winapifamily.h>
+#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#error not desktop
+#endif
+#endif
+EOF
+    elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
+        eval ${pfx}libc_type=klibc
+    elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
+        eval ${pfx}libc_type=bionic
+    elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
+        eval ${pfx}libc_type=solaris
+        add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
+    fi
+    check_${pfx}cc <<EOF
+#include <time.h>
+void *v = localtime_r;
+EOF
+test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+#include <time.h>
+void *v = localtime_r;
+EOF
+
+}
+
+probe_libc
+test -n "$libc_type" && enable libc_$libc_type
+probe_libc host_
+test -n "$host_libc_type" && enable host_libc_$host_libc_type
+
+case $libc_type in
+    bionic)
+        add_compat strtod.o strtod=avpriv_strtod
+        ;;
+esac
+
+# hacks for compiler/libc/os combinations
+
+if enabled_all tms470 libc_glibc; then
+    CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
+    add_cppflags -D__USER_LABEL_PREFIX__=
+    add_cppflags -D__builtin_memset=memset
+    add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
+    add_cflags   -pds=48    # incompatible redefinition of macro
+fi
+
+if enabled_all ccc libc_glibc; then
+    add_ldflags -Wl,-z,now  # calls to libots crash without this
+fi
+
+check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
+    add_cppflags '-I\$(SRC_PATH)/compat/float'
+
+esc(){
+    echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
+}
+
+echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
+
+check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
+
+set_default libdir
+: ${shlibdir_default:="$libdir"}
+: ${pkgconfigdir_default:="$libdir/pkgconfig"}
+
+set_default $PATHS_LIST
+set_default nm
+
+# we need to build at least one lib type
+if ! enabled_any static shared; then
+    cat <<EOF
+At least one library type must be built.
+Specify --enable-static to build the static libraries or --enable-shared to
+build the shared libraries as well. To only build the shared libraries specify
+--disable-static in addition to --enable-shared.
+EOF
+    exit 1
+fi
+
+die_license_disabled() {
+    enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
+}
+
+die_license_disabled_gpl() {
+    enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
+}
+
+die_license_disabled gpl frei0r
+die_license_disabled gpl libcdio
+die_license_disabled gpl librubberband
+die_license_disabled gpl libsmbclient
+die_license_disabled gpl libvidstab
+die_license_disabled gpl libx264
+die_license_disabled gpl libx265
+die_license_disabled gpl libxavs
+die_license_disabled gpl libxvid
+die_license_disabled gpl x11grab
+
+die_license_disabled nonfree cuda
+die_license_disabled nonfree cuvid
+die_license_disabled nonfree libfaac
+die_license_disabled nonfree libnpp
+enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
+enabled gpl && die_license_disabled_gpl nonfree openssl
+
+die_license_disabled version3 gmp
+die_license_disabled version3 libopencore_amrnb
+die_license_disabled version3 libopencore_amrwb
+die_license_disabled version3 libsmbclient
+die_license_disabled version3 libvo_amrwbenc
+
+enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
+
+disabled optimizations || check_cflags -fomit-frame-pointer
+
+enable_weak_pic() {
+    disabled pic && return
+    enable pic
+    add_cppflags -DPIC
+    case "$target_os" in
+    mingw*|cygwin*)
+        ;;
+    *)
+        add_cflags -fPIC
+        ;;
+    esac
+    add_asflags  -fPIC
+}
+
+enabled pic && enable_weak_pic
+
+check_cc <<EOF || die "Symbol mangling check failed."
+int ff_extern;
+EOF
+sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
+extern_prefix=${sym%%ff_extern*}
+
+check_cc <<EOF && enable_weak inline_asm
+void foo(void) { __asm__ volatile ("" ::); }
+EOF
+
+_restrict=
+for restrict_keyword in restrict __restrict__ __restrict; do
+    check_cc <<EOF && _restrict=$restrict_keyword && break
+void foo(char * $restrict_keyword p);
+EOF
+done
+
+check_cc <<EOF && enable pragma_deprecated
+void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
+EOF
+
+check_cc <<EOF && enable attribute_packed
+struct { int x; } __attribute__((packed)) x;
+EOF
+
+check_cc <<EOF && enable attribute_may_alias
+union { int x; } __attribute__((may_alias)) x;
+EOF
+
+check_cc <<EOF || die "endian test failed"
+unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
+EOF
+od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
+
+if ! enabled ppc64 || enabled bigendian; then
+    disable vsx
+fi
+
+check_gas() {
+    log "check_gas using '$as' as AS"
+    # :vararg is used on aarch64, arm and ppc altivec
+    check_as <<EOF || return 1
+.macro m n, y:vararg=0
+\n: .int \y
+.endm
+m x
+EOF
+    # .altmacro is only used in arm asm
+    ! enabled arm || check_as <<EOF || return 1
+.altmacro
+EOF
+    enable gnu_as
+    return 0
+}
+
+if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
+    nogas=:
+    enabled_any arm aarch64 && nogas=die
+    enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
+    as_noop=-v
+
+    case $as_type in
+        arm*) gaspp_as_type=armasm; as_noop=-h ;;
+        gcc)  gaspp_as_type=gas ;;
+        *)    gaspp_as_type=$as_type ;;
+    esac
+
+    [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
+
+    test "${as#*gas-preprocessor.pl}" != "$as" ||
+    check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
+        gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
+
+    if ! check_gas ; then
+        as=${gas:=$as}
+        check_gas || \
+            $nogas "GNU assembler not found, install/update gas-preprocessor"
+    fi
+
+    check_as <<EOF && enable as_func
+.func test
+.endfunc
+EOF
+fi
+
+check_inline_asm inline_asm_labels '"1:\n"'
+
+check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
+
+if enabled aarch64; then
+    enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
+    # internal assembler in clang 3.3 does not support this instruction
+    enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
+    enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
+
+    map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
+
+elif enabled alpha; then
+
+    check_cflags -mieee
+
+elif enabled arm; then
+
+    enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
+
+    check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
+float func(float a, float b){ return a+b; }
+EOF
+
+    enabled thumb && check_cflags -mthumb || check_cflags -marm
+
+    if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
+        enable vfp_args
+    elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
+        enable vfp_args
+    elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
+        case "${cross_prefix:-$cc}" in
+            *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
+            *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
+__asm__ (".eabi_attribute 28, 1");
+int main(void) { return 0; }
+EOF
+        esac
+        warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
+    fi
+
+    enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
+    enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
+    enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
+    enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
+    enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
+    enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
+    enabled setend  && check_insn setend  'setend be'
+
+    [ $target_os = linux ] || [ $target_os = android ] ||
+        map 'enabled_any ${v}_external ${v}_inline || disable $v' \
+            $ARCH_EXT_LIST_ARM
+
+    check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
+
+    check_as <<EOF && enable as_dn_directive
+ra .dn d0.i16
+.unreq ra
+EOF
+
+    # llvm's integrated assembler supports .object_arch from llvm 3.5
+    [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
+.object_arch armv4
+EOF
+
+    [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
+
+elif enabled mips; then
+
+    enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
+    enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
+    enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
+
+    # Enable minimum ISA based on selected options
+    if enabled mips64; then
+        enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
+        enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
+        disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
+    else
+        enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
+        enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
+        enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
+        disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
+    fi
+
+    enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
+    enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
+    enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
+    enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
+    enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
+
+elif enabled parisc; then
+
+    if enabled gcc; then
+        case $($cc -dumpversion) in
+            4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
+        esac
+    fi
+
+elif enabled ppc; then
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
+    check_inline_asm ibm_asm   '"add 0, 0, 0"'
+    check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
+    check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
+
+    # AltiVec flags: The FSF version of GCC differs from the Apple version
+    if enabled altivec; then
+        check_cflags -maltivec -mabi=altivec &&
+        { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
+        check_cflags -faltivec
+
+        # check if our compiler supports Motorola AltiVec C API
+        check_cc <<EOF || disable altivec
+$inc_altivec_h
+int main(void) {
+    vector signed int v1 = (vector signed int) { 0 };
+    vector signed int v2 = (vector signed int) { 1 };
+    v1 = vec_add(v1, v2);
+    return 0;
+}
+EOF
+
+        enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
+    fi
+
+    if enabled vsx; then
+        check_cflags -mvsx &&
+        check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
+    fi
+
+    if enabled power8; then
+        check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
+    fi
+
+elif enabled x86; then
+
+    check_builtin rdtsc    intrin.h   "__rdtsc()"
+    check_builtin mm_empty mmintrin.h "_mm_empty()"
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    # check whether EBP is available on x86
+    # As 'i' is stored on the stack, this program will crash
+    # if the base pointer is used to access it because the
+    # base pointer is cleared in the inline assembly code.
+    check_exec_crash <<EOF && enable ebp_available
+volatile int i=0;
+__asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
+return i;
+EOF
+
+    # check whether EBX is available on x86
+    check_inline_asm ebx_available '""::"b"(0)' &&
+        check_inline_asm ebx_available '"":::"%ebx"'
+
+    # check whether xmm clobbers are supported
+    check_inline_asm xmm_clobbers '"":::"%xmm0"'
+
+    check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
+        check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
+
+    # check whether binutils is new enough to compile SSSE3/MMXEXT
+    enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
+    enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
+
+    if ! disabled_any asm mmx yasm; then
+        if check_cmd $yasmexe --version; then
+            enabled x86_64 && yasm_extra="-m amd64"
+            yasm_debug="-g dwarf2"
+        elif check_cmd nasm -v; then
+            yasmexe=nasm
+            yasm_debug="-g -F dwarf"
+            if enabled x86_64; then
+                case "$objformat" in
+                    elf)   objformat=elf64 ;;
+                    win32) objformat=win64 ;;
+                esac
+            fi
+        fi
+
+        YASMFLAGS="-f $objformat $yasm_extra"
+        enabled pic               && append YASMFLAGS "-DPIC"
+        test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
+        case "$objformat" in
+            elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
+        esac
+
+        check_yasm "movbe ecx, [5]" && enable yasm ||
+            die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
+        check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
+        check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
+        check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
+        check_yasm "CPU amdnop" || disable cpunop
+    fi
+
+    case "$cpu" in
+        athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
+            disable fast_clz
+        ;;
+    esac
+
+fi
+
+check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
+
+check_ldflags -Wl,--as-needed
+check_ldflags -Wl,-z,noexecstack
+
+if check_func dlopen; then
+    ldl=
+elif check_func dlopen -ldl; then
+    ldl=-ldl
+fi
+
+decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
+decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
+frei0r_filter_extralibs='$ldl'
+frei0r_src_filter_extralibs='$ldl'
+ladspa_filter_extralibs='$ldl'
+nvenc_encoder_extralibs='$ldl'
+coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+
+if ! disabled network; then
+    check_func getaddrinfo $network_extralibs
+    check_func inet_aton $network_extralibs
+
+    check_type netdb.h "struct addrinfo"
+    check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
+    check_type poll.h "struct pollfd"
+    check_type netinet/sctp.h "struct sctp_event_subscribe"
+    check_struct "sys/socket.h" "struct msghdr" msg_flags
+    check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
+    check_type netinet/in.h "struct sockaddr_in6"
+    check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
+    check_type "sys/types.h sys/socket.h" socklen_t
+
+    # Prefer arpa/inet.h over winsock2
+    if check_header arpa/inet.h ; then
+        check_func closesocket
+    elif check_header winsock2.h ; then
+        check_func_headers winsock2.h closesocket -lws2 &&
+            network_extralibs="-lws2" ||
+        { check_func_headers winsock2.h closesocket -lws2_32 &&
+            network_extralibs="-lws2_32"; } || disable winsock2_h network
+        check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
+
+        check_type ws2tcpip.h socklen_t
+        check_type ws2tcpip.h "struct addrinfo"
+        check_type ws2tcpip.h "struct group_source_req"
+        check_type ws2tcpip.h "struct ip_mreq_source"
+        check_type ws2tcpip.h "struct ipv6_mreq"
+        check_type winsock2.h "struct pollfd"
+        check_struct winsock2.h "struct sockaddr" sa_len
+        check_type ws2tcpip.h "struct sockaddr_in6"
+        check_type ws2tcpip.h "struct sockaddr_storage"
+    else
+        disable network
+    fi
+fi
+
+check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
+check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
+check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
+check_builtin MemoryBarrier windows.h "MemoryBarrier()"
+check_builtin sarestart signal.h "SA_RESTART"
+check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
+check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
+check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
+check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
+check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
+
+case "$custom_allocator" in
+    jemalloc)
+        # jemalloc by default does not use a prefix
+        require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
+    ;;
+    tcmalloc)
+        require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
+        malloc_prefix=tc_
+    ;;
+esac
+
+check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
+check_func  ${malloc_prefix}memalign            && enable memalign
+check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
+
+check_func  access
+check_func  arc4random
+check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  fcntl
+check_func  fork
+check_func  gethrtime
+check_func  getopt
+check_func  getrusage
+check_func  gettimeofday
+check_func  isatty
+check_func  mach_absolute_time
+check_func  mkstemp
+check_func  mmap
+check_func  mprotect
+# Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
+check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  sched_getaffinity
+check_func  setrlimit
+check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
+check_func  strerror_r
+check_func  sysconf
+check_func  sysctl
+check_func  usleep
+
+check_func_headers conio.h kbhit
+check_func_headers io.h setmode
+check_func_headers lzo/lzo1x.h lzo1x_999_compress
+check_func_headers stdlib.h getenv
+check_func_headers sys/stat.h lstat
+
+check_func_headers windows.h CoTaskMemFree -lole32
+check_func_headers windows.h GetProcessAffinityMask
+check_func_headers windows.h GetProcessTimes
+check_func_headers windows.h GetSystemTimeAsFileTime
+check_func_headers windows.h MapViewOfFile
+check_func_headers windows.h PeekNamedPipe
+check_func_headers windows.h SetConsoleTextAttribute
+check_func_headers windows.h SetConsoleCtrlHandler
+check_func_headers windows.h SetDllDirectory
+check_func_headers windows.h Sleep
+check_func_headers windows.h VirtualAlloc
+check_struct windows.h "CONDITION_VARIABLE" Ptr
+check_func_headers glob.h glob
+enabled xlib &&
+    check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
+
+check_header AudioToolbox/AudioToolbox.h
+check_header direct.h
+check_header dirent.h
+check_header dlfcn.h
+check_header d3d11.h
+check_header dxva.h
+check_header dxva2api.h -D_WIN32_WINNT=0x0600
+check_header io.h
+check_header libcrystalhd/libcrystalhd_if.h
+check_header mach/mach_time.h
+check_header malloc.h
+check_header net/udplite.h
+check_header poll.h
+check_header sys/mman.h
+check_header sys/param.h
+check_header sys/resource.h
+check_header sys/select.h
+check_header sys/time.h
+check_header sys/un.h
+check_header termios.h
+check_header unistd.h
+check_header valgrind/valgrind.h
+check_header vdpau/vdpau.h
+check_header vdpau/vdpau_x11.h
+check_header VideoDecodeAcceleration/VDADecoder.h
+check_header VideoToolbox/VideoToolbox.h
+check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
+enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
+check_header windows.h
+check_header X11/extensions/XvMClib.h
+check_header asm/types.h
+
+check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
+check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
+check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
+check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
+
+check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
+
+check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
+check_type "windows.h d3d11.h" "ID3D11VideoContext"
+check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
+
+check_type "va/va.h" "VAPictureParameterBufferHEVC"
+check_type "va/va.h" "VADecPictureParameterBufferVP9"
+check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
+check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
+check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
+check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
+
+check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
+
+check_type "cuviddec.h" "CUVIDH264PICPARAMS"
+check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
+check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
+check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
+
+check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
+
+if ! disabled w32threads && ! enabled pthreads; then
+    check_func_headers "windows.h process.h" _beginthreadex &&
+        enable w32threads || disable w32threads
+    if ! enabled w32threads && enabled winrt; then
+        check_func_headers "windows.h" CreateThread &&
+            enable w32threads || disable w32threads
+    fi
+fi
+
+# check for some common methods of building with pthread support
+# do this before the optional library checks as some of them require pthreads
+if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
+    enable pthreads
+    if check_func pthread_join -lpthread && check_func pthread_create -lpthread; then
+        add_cflags -lpthread
+        add_extralibs -lpthread
+    elif check_func pthread_join -lpthreads && check_func pthread_create -lpthreads; then
+        add_cflags -lpthreads
+        add_extralibs -lpthreads
+    elif check_func pthread_join -ldl -lpthread && check_func pthread_create -ldl -lpthread; then
+        add_cflags -ldl -lpthread
+        add_extralibs -ldl -lpthread
+    elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
+        add_extralibs -lpthreadGC2
+    elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
+        :
+    elif ! check_func pthread_join && ! check_func pthread_create; then
+        disable pthreads
+    fi
+    check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
+fi
+
+
+if enabled pthreads; then
+  check_func pthread_cancel
+fi
+
+enabled pthreads &&
+    check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
+
+disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
+disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
+disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
+
+check_lib math.h sin -lm && LIBM="-lm"
+disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
+
+atan2f_args=2
+copysign_args=2
+hypot_args=2
+ldexpf_args=2
+powf_args=2
+
+for func in $MATH_FUNCS; do
+    eval check_mathfunc $func \${${func}_args:-1}
+done
+
+for func in $COMPLEX_FUNCS; do
+    eval check_complexfunc $func \${${func}_args:-1}
+done
+
+# Enable CUVID by default if CUDA is enabled
+if enabled cuda && ! disabled cuvid; then
+    enable cuvid
+fi
+
+# these are off by default, so fail if requested and not available
+enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
+enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
+                                check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
+enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
+                               { check_lib2 "dlfcn.h" dlopen -ldl; } ||
+                               die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
+enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
+                               die "ERROR: CUDA not found"; }
+enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
+                               die "ERROR: CUVID not found"; } &&
+                             { enabled cuda ||
+                               die "ERROR: CUVID requires CUDA"; }
+enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
+enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
+enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
+enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
+enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
+enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
+enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init -lp11-kit -ltasn1
+enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
+                               check_lib2 "dlfcn.h" dlopen -ldl; }
+enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
+enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
+enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
+enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
+enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
+enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
+                             { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
+                               die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
+enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas -lncursesw
+enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
+enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
+enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
+                               { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
+                                 warn "using libfdk without pkg-config"; } }
+flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
+enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
+enabled fontconfig        && enable libfontconfig
+enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
+enabled libfreetype       && require_libfreetype
+enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
+enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
+enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
+                                   check_lib "${gsm_hdr}" gsm_create -lgsm && break;
+                               done || die "ERROR: libgsm not found"; }
+enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
+enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
+enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
+enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
+enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
+enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
+enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
+enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
+enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
+enabled libopencv         && { check_header opencv2/core/core_c.h &&
+                               { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
+                                 require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
+                               require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
+enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
+enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               die "ERROR: libopenjpeg not found"; }
+enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
+enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new -ldbus-1 -lresolv
+enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
+enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
+enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
+enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
+enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
+                               require smbclient libsmbclient.h smbc_init -lsmbclient; }
+enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
+enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr -lgomp && LIBSOXR="-lsoxr"
+enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
+enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
+enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
+enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
+enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
+                             { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
+                               die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
+enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl -lv4l2 -lv4lconvert -ljpeg
+enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
+enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
+enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
+
+enabled libvpx            && {
+    enabled libvpx_vp8_decoder && {
+        use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
+                die "ERROR: libvpx decoder version must be >=0.9.1";
+    }
+    enabled libvpx_vp8_encoder && {
+        use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
+                die "ERROR: libvpx encoder version must be >=0.9.7";
+    }
+    enabled libvpx_vp9_decoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
+                disable libvpx_vp9_decoder;
+    }
+    enabled libvpx_vp9_encoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
+                disable libvpx_vp9_encoder;
+    }
+    if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
+        die "libvpx enabled but no supported decoders found"
+    fi
+}
+
+enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
+enabled libwebp           && {
+    enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
+    enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
+enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
+                               { require libx264 x264.h x264_encoder_encode -lx264 &&
+                                 warn "using libx264 without pkg-config"; } } &&
+                             { check_cpp_condition x264.h "X264_BUILD >= 118" ||
+                               die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
+                             { check_cpp_condition x264.h "X264_MPEG2" &&
+                               enable libx262; }
+enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
+                             { check_cpp_condition x265.h "X265_BUILD >= 68" ||
+                               die "ERROR: libx265 version must be >= 68."; }
+enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
+enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
+enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
+enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new -lstdc++
+enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
+                             { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
+                               enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
+enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
+enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
+                                { ! enabled cross_compile && {
+                                    add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
+                                    add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
+                                    check_lib interface/mmal/mmal.h mmal_port_connect ; }
+                                check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
+                               die "ERROR: mmal not found"; }
+enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
+
+enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
+enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
+                             { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
+                               die "ERROR: NVENC API version 5 or older is not supported"; } &&
+                             { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
+enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
+                               check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
+                               die "ERROR: openal not found"; } &&
+                             { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
+                               die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
+enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
+                               check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
+                               die "ERROR: opencl not found"; } &&
+                             { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
+enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" -lglapi -lxcb ||
+                               check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
+                               check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
+                               check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
+                               die "ERROR: opengl not found."
+                             }
+enabled omx_rpi && enable omx
+enabled omx               && { check_header OMX_Core.h ||
+                                { ! enabled cross_compile && enabled omx_rpi && {
+                                    add_cflags -isystem/opt/vc/include/IL ; }
+                                check_header OMX_Core.h ; } ||
+                               die "ERROR: OpenMAX IL headers not found"; }
+enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
+                               die "ERROR: openssl not found"; }
+enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
+
+# libdc1394 check
+if enabled libdc1394; then
+    { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
+        enable libdc1394_2; } ||
+    { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
+        enable libdc1394_1; } ||
+    die "ERROR: No version of libdc1394 found "
+fi
+
+if enabled gcrypt; then
+    GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
+    if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
+        gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
+        gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
+        check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
+            die "ERROR: gcrypt not found"
+        add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
+    else
+        require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
+    fi
+fi
+
+if ! disabled sdl; then
+    SDL_CONFIG="${cross_prefix}sdl-config"
+    if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+        enable sdl
+    else
+        if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
+            sdl_cflags=$("${SDL_CONFIG}" --cflags)
+            sdl_libs=$("${SDL_CONFIG}" --libs)
+            check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+            enable sdl
+        elif enabled sdl ; then
+            die "ERROR: SDL not found"
+        else
+            disable sdl
+        fi
+    fi
+    if test $target_os = "mingw32"; then
+        sdl_libs="$sdl_libs -mconsole"
+    fi
+fi
+enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
+
+disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    enable securetransport; }
+
+disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
+                       check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
+
+makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
+enabled makeinfo \
+    && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
+    && enable makeinfo_html || disable makeinfo_html
+disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
+perl -v            > /dev/null 2>&1 && enable perl      || disable perl
+pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
+rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
+
+check_header linux/fb.h
+check_header linux/videodev.h
+check_header linux/videodev2.h
+check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_header sys/videoio.h
+check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
+# check that WM_CAP_DRIVER_CONNECT is defined to the proper value
+# w32api 3.12 had it defined wrong
+check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
+
+check_type "dshow.h" IBaseFilter
+
+# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
+{ check_header dev/bktr/ioctl_meteor.h &&
+  check_header dev/bktr/ioctl_bt848.h; } ||
+{ check_header machine/ioctl_meteor.h &&
+  check_header machine/ioctl_bt848.h; } ||
+{ check_header dev/video/meteor/ioctl_meteor.h &&
+  check_header dev/video/bktr/ioctl_bt848.h; } ||
+check_header dev/ic/bt8xx.h
+
+check_header sndio.h
+if check_struct sys/soundcard.h audio_buf_info bytes; then
+    enable_safe sys/soundcard.h
+else
+    check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
+    #include <sys/soundcard.h>
+    audio_buf_info abc;
+EOF
+fi
+check_header soundcard.h
+
+enabled_any alsa_indev alsa_outdev &&
+    check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
+
+enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
+    check_func jack_port_get_latency_range -ljack
+
+enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
+
+if enabled libcdio; then
+    check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    die "ERROR: No usable libcdio/cdparanoia found"
+fi
+
+enabled xlib &&
+    check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
+
+if ! disabled libxcb; then
+    check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
+        enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
+    } && disable x11grab && enable libxcb
+
+if enabled libxcb; then
+    disabled libxcb_shm || {
+        check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
+            enabled libxcb_shm && die "ERROR: libxcb_shm not found";
+        } && check_header sys/shm.h && enable libxcb_shm; }
+
+    disabled libxcb_xfixes || {
+        check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
+            enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
+        } && enable libxcb_xfixes; }
+
+    disabled libxcb_shape || {
+        check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
+            enabled libxcb_shape && die "ERROR: libxcb_shape not found";
+        } && enable libxcb_shape; }
+
+    add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
+    add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
+fi
+fi
+
+if enabled x11grab; then
+    enabled xlib || die "ERROR: Xlib not found"
+    require Xext X11/extensions/XShm.h XShmCreateImage -lXext
+    require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
+fi
+
+check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
+
+enabled dxva2api_h &&
+    check_cc <<EOF && enable dxva2api_cobj
+#define _WIN32_WINNT 0x0600
+#define COBJMACROS
+#include <windows.h>
+#include <d3d9.h>
+#include <dxva2api.h>
+int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
+EOF
+
+enabled vaapi &&
+    check_lib va/va.h vaInitialize -lva ||
+    disable vaapi
+
+enabled vaapi &&
+    check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
+    disable vaapi
+
+if enabled vaapi ; then
+    enabled xlib &&
+    check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
+    enable vaapi_x11
+
+    check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
+    enable vaapi_drm
+fi
+
+enabled vdpau &&
+    check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
+    disable vdpau
+
+enabled vdpau && enabled xlib &&
+    check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
+    enable vdpau_x11
+
+# Funny iconv installations are not unusual, so check it after all flags have been set
+disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
+
+enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
+
+# add some useful compiler flags if supported
+check_cflags -Wdeclaration-after-statement
+check_cflags -Wall
+check_cflags -Wdisabled-optimization
+check_cflags -Wpointer-arith
+check_cflags -Wredundant-decls
+check_cflags -Wwrite-strings
+check_cflags -Wtype-limits
+check_cflags -Wundef
+check_cflags -Wmissing-prototypes
+check_cflags -Wno-pointer-to-int-cast
+check_cflags -Wstrict-prototypes
+check_cflags -Wempty-body
+enabled extra_warnings && check_cflags -Winline
+enabled extra_warnings && check_cflags -Wcast-qual
+
+check_disable_warning(){
+    warning_flag=-W${1#-Wno-}
+    test_cflags $warning_flag && add_cflags $1
+}
+
+check_disable_warning -Wno-parentheses
+check_disable_warning -Wno-switch
+check_disable_warning -Wno-format-zero-length
+check_disable_warning -Wno-pointer-sign
+check_disable_warning -Wno-unused-const-variable
+
+# add some linker flags
+check_ldflags -Wl,--warn-common
+check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
+enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
+enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
+test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
+
+# add some strip flags
+# -wN '..@*' is more selective than -x, but not available everywhere.
+check_stripflags -wN \'..@*\' || check_stripflags -x
+
+enabled neon_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert ||
+    disable neon_clobber_test
+
+enabled xmm_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert         \
+                  -Wl,--wrap,sws_scale ||
+    disable xmm_clobber_test
+
+echo "X { local: *; };" > $TMPV
+if test_ldflags -Wl,--version-script,$TMPV; then
+    append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
+elif test_ldflags -Wl,-M,$TMPV; then
+    append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
+fi
+
+check_cc <<EOF && enable symver_asm_label
+void ff_foo(void) __asm__ ("av_foo@VERSION");
+void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
+EOF
+    check_cc <<EOF && enable symver_gnu_asm
+__asm__(".symver ff_foo,av_foo@VERSION");
+void ff_foo(void) {}
+EOF
+
+if [ -z "$optflags" ]; then
+    if enabled small; then
+        optflags=$cflags_size
+    elif enabled optimizations; then
+        optflags=$cflags_speed
+    else
+        optflags=$cflags_noopt
+    fi
+fi
+
+check_optflags(){
+    check_cflags "$@"
+    enabled lto && check_ldflags "$@"
+}
+
+
+if enabled lto; then
+    test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
+    check_cflags  -flto
+    check_ldflags -flto $cpuflags
+    disable inline_asm_direct_symbol_refs
+fi
+
+check_optflags $optflags
+check_optflags -fno-math-errno
+check_optflags -fno-signed-zeros
+
+enabled ftrapv && check_cflags -ftrapv
+
+check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
+int x;
+EOF
+
+
+if enabled icc; then
+    # Just warnings, no remarks
+    check_cflags -w1
+    # -wd: Disable following warnings
+    # 144, 167, 556: -Wno-pointer-sign
+    # 188: enumerated type mixed with another type
+    # 1292: attribute "foo" ignored
+    # 1419: external declaration in primary source file
+    # 10006: ignoring unknown option -fno-signed-zeros
+    # 10148: ignoring unknown option -Wno-parentheses
+    # 10156: ignoring option '-W'; no argument required
+    # 13200: No EMMS instruction before call to function
+    # 13203: No EMMS instruction before return from function
+    check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
+    # 11030: Warning unknown option --as-needed
+    # 10156: ignoring option '-export'; no argument required
+    check_ldflags -wd10156,11030
+    # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
+    enable ebp_available
+    # The test above does not test linking
+    enabled lto && disable symver_asm_label
+    if enabled x86_32; then
+        icc_version=$($cc -dumpversion)
+        test ${icc_version%%.*} -ge 11 &&
+            check_cflags -falign-stack=maintain-16-byte ||
+            disable aligned_stack
+    fi
+elif enabled ccc; then
+    # disable some annoying warnings
+    add_cflags -msg_disable bitnotint
+    add_cflags -msg_disable mixfuncvoid
+    add_cflags -msg_disable nonstandcast
+    add_cflags -msg_disable unsupieee
+elif enabled gcc; then
+    check_optflags -fno-tree-vectorize
+    check_cflags -Werror=format-security
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+    check_cflags -Werror=vla
+    check_cflags -Wformat
+    check_cflags -fdiagnostics-color=auto
+    enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
+elif enabled llvm_gcc; then
+    check_cflags -mllvm -stack-alignment=16
+elif enabled clang; then
+    check_cflags -mllvm -stack-alignment=16
+    check_cflags -Qunused-arguments
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+elif enabled cparser; then
+    add_cflags -Wno-missing-variable-declarations
+    add_cflags -Wno-empty-statement
+elif enabled armcc; then
+    add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
+    # 2523: use of inline assembly is deprecated
+    add_cflags -W${armcc_opt},--diag_suppress=2523
+    add_cflags -W${armcc_opt},--diag_suppress=1207
+    add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
+    add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
+    add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
+elif enabled tms470; then
+    add_cflags -pds=824 -pds=837
+    disable inline_asm
+elif enabled pathscale; then
+    add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
+elif enabled_any msvc icl; then
+    enabled x86_32 && disable aligned_stack
+    enabled_all x86_32 debug && add_cflags -Oy-
+    enabled debug && add_ldflags -debug
+    enable pragma_deprecated
+    if enabled icl; then
+        # -Qansi-alias is basically -fstrict-aliasing, but does not work
+        # (correctly) on icl 13.x.
+        check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
+            add_cflags -Qansi-alias
+        # Some inline asm is not compilable in debug
+        if enabled debug; then
+            disable ebp_available
+            disable ebx_available
+        fi
+    fi
+    # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
+    check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
+    # The CRT headers contain __declspec(restrict) in a few places, but if redefining
+    # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
+    # (as it ends up if the restrict redefine is done before including stdlib.h), while
+    # MSVC 2013 and newer can handle it fine.
+    # If this declspec fails, force including stdlib.h before the restrict redefinition
+    # happens in config.h.
+    if [ $_restrict != restrict ]; then
+        check_cc <<EOF || add_cflags -FIstdlib.h
+__declspec($_restrict) void* foo(int);
+EOF
+    fi
+    check_func strtoll || add_cflags -Dstrtoll=_strtoi64
+fi
+
+for pfx in "" host_; do
+    varname=${pfx%_}cc_type
+    eval "type=\$$varname"
+    if [ $type = "msvc" ]; then
+        check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
+static inline int foo(int a) { return a; }
+EOF
+    fi
+done
+
+case $as_type in
+    clang)
+        add_asflags -Qunused-arguments
+    ;;
+esac
+
+case $ld_type in
+    clang)
+        check_ldflags -Qunused-arguments
+    ;;
+esac
+
+case $target_os in
+    osf1)
+        enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
+    ;;
+    plan9)
+        add_cppflags -Dmain=plan9_main
+    ;;
+esac
+
+enable frame_thread_encoder
+
+enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
+
+check_deps $CONFIG_LIST       \
+           $CONFIG_EXTRA      \
+           $HAVE_LIST         \
+           $ALL_COMPONENTS    \
+
+enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
+
+
+if test $target_os = "haiku"; then
+    disable memalign
+    disable posix_memalign
+fi
+
+enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
+    prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
+    enable dxva2_lib
+
+! enabled_any memalign posix_memalign aligned_malloc &&
+    enabled simd_align_16 && enable memalign_hack
+
+# add_dep lib dep
+# -> enable ${lib}_deps_${dep}
+# -> add $dep to ${lib}_deps only once
+add_dep() {
+    lib=$1
+    dep=$2
+    enabled "${lib}_deps_${dep}" && return 0
+    enable  "${lib}_deps_${dep}"
+    prepend "${lib}_deps" $dep
+}
+
+# merge deps lib components
+# merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
+merge_deps() {
+    lib=$1
+    shift
+    for comp in $*; do
+        enabled $comp || continue
+        eval "dep=\"\$${comp}_deps\""
+        for d in $dep; do
+            add_dep $lib $d
+        done
+    done
+}
+
+merge_deps libavfilter $FILTER_LIST
+
+map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
+
+for thread in $THREADS_LIST; do
+    if enabled $thread; then
+        test -n "$thread_type" &&
+            die "ERROR: Only one thread type must be selected." ||
+            thread_type="$thread"
+    fi
+done
+
+enabled zlib && add_cppflags -DZLIB_CONST
+
+# conditional library dependencies, in linking order
+enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
+enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
+enabled aresample_filter    && prepend avfilter_deps "swresample"
+enabled asyncts_filter      && prepend avfilter_deps "avresample"
+enabled atempo_filter       && prepend avfilter_deps "avcodec"
+enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
+enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
+enabled elbg_filter         && prepend avfilter_deps "avcodec"
+enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
+enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
+enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
+enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
+enabled pan_filter          && prepend avfilter_deps "swresample"
+enabled pp_filter           && prepend avfilter_deps "postproc"
+enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
+enabled resample_filter && prepend avfilter_deps "avresample"
+enabled sab_filter          && prepend avfilter_deps "swscale"
+enabled scale_filter    && prepend avfilter_deps "swscale"
+enabled scale2ref_filter    && prepend avfilter_deps "swscale"
+enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
+enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
+enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
+enabled showspectrum_filter && prepend avfilter_deps "avcodec"
+enabled smartblur_filter    && prepend avfilter_deps "swscale"
+enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
+enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
+enabled uspp_filter         && prepend avfilter_deps "avcodec"
+
+enabled lavfi_indev         && prepend avdevice_deps "avfilter"
+
+enabled opus_decoder    && prepend avcodec_deps "swresample"
+
+expand_deps(){
+    lib_deps=${1}_deps
+    eval "deps=\$$lib_deps"
+    append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
+    unique $lib_deps
+}
+
+#we have to remove gpl from the deps here as some code assumes all lib deps are libs
+postproc_deps="$(filter_out 'gpl' $postproc_deps)"
+
+map 'expand_deps $v' $LIBRARY_LIST
+
+echo "install prefix            $prefix"
+echo "source path               $source_path"
+echo "C compiler                $cc"
+echo "C library                 $libc_type"
+if test "$host_cc" != "$cc"; then
+    echo "host C compiler           $host_cc"
+    echo "host C library            $host_libc_type"
+fi
+echo "ARCH                      $arch ($cpu)"
+if test "$build_suffix" != ""; then
+    echo "build suffix              $build_suffix"
+fi
+if test "$progs_suffix" != ""; then
+    echo "progs suffix              $progs_suffix"
+fi
+if test "$extra_version" != ""; then
+    echo "version string suffix     $extra_version"
+fi
+echo "big-endian                ${bigendian-no}"
+echo "runtime cpu detection     ${runtime_cpudetect-no}"
+if enabled x86; then
+    echo "${yasmexe}                      ${yasm-no}"
+    echo "MMX enabled               ${mmx-no}"
+    echo "MMXEXT enabled            ${mmxext-no}"
+    echo "3DNow! enabled            ${amd3dnow-no}"
+    echo "3DNow! extended enabled   ${amd3dnowext-no}"
+    echo "SSE enabled               ${sse-no}"
+    echo "SSSE3 enabled             ${ssse3-no}"
+    echo "AESNI enabled             ${aesni-no}"
+    echo "AVX enabled               ${avx-no}"
+    echo "XOP enabled               ${xop-no}"
+    echo "FMA3 enabled              ${fma3-no}"
+    echo "FMA4 enabled              ${fma4-no}"
+    echo "i686 features enabled     ${i686-no}"
+    echo "CMOV is fast              ${fast_cmov-no}"
+    echo "EBX available             ${ebx_available-no}"
+    echo "EBP available             ${ebp_available-no}"
+fi
+if enabled aarch64; then
+    echo "NEON enabled              ${neon-no}"
+    echo "VFP enabled               ${vfp-no}"
+fi
+if enabled arm; then
+    echo "ARMv5TE enabled           ${armv5te-no}"
+    echo "ARMv6 enabled             ${armv6-no}"
+    echo "ARMv6T2 enabled           ${armv6t2-no}"
+    echo "VFP enabled               ${vfp-no}"
+    echo "NEON enabled              ${neon-no}"
+    echo "THUMB enabled             ${thumb-no}"
+fi
+if enabled mips; then
+    echo "MIPS FPU enabled          ${mipsfpu-no}"
+    echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
+    echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
+    echo "MIPS MSA enabled          ${msa-no}"
+    echo "LOONGSON MMI enabled      ${mmi-no}"
+fi
+if enabled ppc; then
+    echo "AltiVec enabled           ${altivec-no}"
+    echo "VSX enabled               ${vsx-no}"
+    echo "POWER8 enabled            ${power8-no}"
+    echo "PPC 4xx optimizations     ${ppc4xx-no}"
+    echo "dcbzl available           ${dcbzl-no}"
+fi
+echo "debug symbols             ${debug-no}"
+echo "strip symbols             ${stripping-no}"
+echo "optimize for size         ${small-no}"
+echo "optimizations             ${optimizations-no}"
+echo "static                    ${static-no}"
+echo "shared                    ${shared-no}"
+echo "postprocessing support    ${postproc-no}"
+echo "new filter support        ${avfilter-no}"
+echo "network support           ${network-no}"
+echo "threading support         ${thread_type-no}"
+echo "safe bitstream reader     ${safe_bitstream_reader-no}"
+echo "SDL support               ${sdl-no}"
+echo "opencl enabled            ${opencl-no}"
+echo "JNI support               ${jni-no}"
+echo "texi2html enabled         ${texi2html-no}"
+echo "perl enabled              ${perl-no}"
+echo "pod2man enabled           ${pod2man-no}"
+echo "makeinfo enabled          ${makeinfo-no}"
+echo "makeinfo supports HTML    ${makeinfo_html-no}"
+test -n "$random_seed" &&
+    echo "random seed               ${random_seed}"
+echo
+
+echo "Enabled programs:"
+print_enabled '' $PROGRAM_LIST | print_in_columns
+echo
+
+echo "External libraries:"
+print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "External libraries providing hardware acceleration:"
+print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "Libraries:"
+print_enabled '' $LIBRARY_LIST | print_in_columns
+echo
+
+for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
+    echo "Enabled ${type}s:"
+    eval list=\$$(toupper $type)_LIST
+    print_enabled '_*' $list | print_in_columns
+    echo
+done
+
+license="LGPL version 2.1 or later"
+if enabled nonfree; then
+    license="nonfree and unredistributable"
+elif enabled gplv3; then
+    license="GPL version 3 or later"
+elif enabled lgplv3; then
+    license="LGPL version 3 or later"
+elif enabled gpl; then
+    license="GPL version 2 or later"
+fi
+
+echo "License: $license"
+
+echo "Creating config.mak, config.h, and doc/config.texi..."
+
+test -e Makefile || echo "include $source_path/Makefile" > Makefile
+
+enabled stripping || strip="echo skipping strip"
+
+config_files="$TMPH config.mak doc/config.texi"
+
+cat > config.mak <<EOF
+# Automatically generated by configure - do not modify!
+ifndef FFMPEG_CONFIG_MAK
+FFMPEG_CONFIG_MAK=1
+FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
+prefix=$prefix
+LIBDIR=\$(DESTDIR)$libdir
+SHLIBDIR=\$(DESTDIR)$shlibdir
+INCDIR=\$(DESTDIR)$incdir
+BINDIR=\$(DESTDIR)$bindir
+DATADIR=\$(DESTDIR)$datadir
+DOCDIR=\$(DESTDIR)$docdir
+MANDIR=\$(DESTDIR)$mandir
+PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
+INSTALL_NAME_DIR=$install_name_dir
+SRC_PATH=$source_path
+SRC_LINK=$source_link
+ifndef MAIN_MAKEFILE
+SRC_PATH:=\$(SRC_PATH:.%=..%)
+endif
+CC_IDENT=$cc_ident
+ARCH=$arch
+INTRINSICS=$intrinsics
+CC=$cc
+CXX=$cxx
+AS=$as
+OBJCC=$objcc
+LD=$ld
+DEPCC=$dep_cc
+DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
+DEPAS=$as
+DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
+YASM=$yasmexe
+DEPYASM=$yasmexe
+AR=$ar
+ARFLAGS=$arflags
+AR_O=$ar_o
+RANLIB=$ranlib
+STRIP=$strip
+CP=cp -p
+LN_S=$ln_s
+CPPFLAGS=$CPPFLAGS
+CFLAGS=$CFLAGS
+CXXFLAGS=$CXXFLAGS
+OBJCFLAGS=$OBJCFLAGS
+ASFLAGS=$ASFLAGS
+AS_C=$AS_C
+AS_O=$AS_O
+OBJCC_C=$OBJCC_C
+OBJCC_E=$OBJCC_E
+OBJCC_O=$OBJCC_O
+CC_C=$CC_C
+CC_E=$CC_E
+CC_O=$CC_O
+CXX_C=$CXX_C
+CXX_O=$CXX_O
+LD_O=$LD_O
+LD_LIB=$LD_LIB
+LD_PATH=$LD_PATH
+DLLTOOL=$dlltool
+WINDRES=$windres
+DEPWINDRES=$dep_cc
+DOXYGEN=$doxygen
+LDFLAGS=$LDFLAGS
+LDEXEFLAGS=$LDEXEFLAGS
+LDLIBFLAGS=$LDLIBFLAGS
+SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
+ASMSTRIPFLAGS=$ASMSTRIPFLAGS
+YASMFLAGS=$YASMFLAGS
+BUILDSUF=$build_suffix
+PROGSSUF=$progs_suffix
+FULLNAME=$FULLNAME
+LIBPREF=$LIBPREF
+LIBSUF=$LIBSUF
+LIBNAME=$LIBNAME
+SLIBPREF=$SLIBPREF
+SLIBSUF=$SLIBSUF
+EXESUF=$EXESUF
+EXTRA_VERSION=$extra_version
+CCDEP=$CCDEP
+CXXDEP=$CXXDEP
+CCDEP_FLAGS=$CCDEP_FLAGS
+ASDEP=$ASDEP
+ASDEP_FLAGS=$ASDEP_FLAGS
+CC_DEPFLAGS=$CC_DEPFLAGS
+AS_DEPFLAGS=$AS_DEPFLAGS
+HOSTCC=$host_cc
+HOSTLD=$host_ld
+HOSTCFLAGS=$host_cflags
+HOSTCPPFLAGS=$host_cppflags
+HOSTEXESUF=$HOSTEXESUF
+HOSTLDFLAGS=$host_ldflags
+HOSTLIBS=$host_libs
+DEPHOSTCC=$host_cc
+DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
+HOSTCCDEP=$HOSTCCDEP
+HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
+HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
+HOSTCC_C=$HOSTCC_C
+HOSTCC_O=$HOSTCC_O
+HOSTLD_O=$HOSTLD_O
+TARGET_EXEC=$target_exec $target_exec_args
+TARGET_PATH=$target_path
+TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
+CFLAGS-ffplay=$sdl_cflags
+ZLIB=$($ldflags_filter -lz)
+LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
+EXTRALIBS=$extralibs
+COMPAT_OBJS=$compat_objs
+EXEOBJS=$exeobjs
+INSTALL=$install
+LIBTARGET=${LIBTARGET}
+SLIBNAME=${SLIBNAME}
+SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
+SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
+SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
+SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
+SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
+SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
+SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
+SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
+SAMPLES:=${samples:-\$(FATE_SAMPLES)}
+NOREDZONE_FLAGS=$noredzone_flags
+EOF
+
+get_version(){
+    lcname=lib${1}
+    name=$(toupper $lcname)
+    file=$source_path/$lcname/version.h
+    eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
+    enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
+    eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
+    eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
+    eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
+    eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
+}
+
+map 'get_version $v' $LIBRARY_LIST
+
+map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
+
+print_program_libs(){
+    eval "program_libs=\$${1}_libs"
+    eval echo "LIBS-${1}=${program_libs}" >> config.mak
+}
+
+map 'print_program_libs $v' $PROGRAM_LIST
+
+cat > $TMPH <<EOF
+/* Automatically generated by configure - do not modify! */
+#ifndef FFMPEG_CONFIG_H
+#define FFMPEG_CONFIG_H
+#define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
+#define FFMPEG_LICENSE "$(c_escape $license)"
+#define CONFIG_THIS_YEAR 2016
+#define FFMPEG_DATADIR "$(eval c_escape $datadir)"
+#define AVCONV_DATADIR "$(eval c_escape $datadir)"
+#define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
+#define av_restrict $_restrict
+#define EXTERN_PREFIX "${extern_prefix}"
+#define EXTERN_ASM ${extern_prefix}
+#define BUILDSUF "$build_suffix"
+#define SLIBSUF "$SLIBSUF"
+#define HAVE_MMX2 HAVE_MMXEXT
+#define SWS_MAX_FILTER_SIZE $sws_max_filter_size
+EOF
+
+test -n "$assert_level" &&
+    echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
+
+test -n "$malloc_prefix" &&
+    echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
+
+if enabled yasm; then
+    append config_files $TMPASM
+    printf '' >$TMPASM
+fi
+
+enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
+
+
+mkdir -p doc
+mkdir -p tests
+mkdir -p tests/api
+echo "@c auto-generated by configure - do not modify! " > doc/config.texi
+
+print_config ARCH_   "$config_files" $ARCH_LIST
+print_config HAVE_   "$config_files" $HAVE_LIST
+print_config CONFIG_ "$config_files" $CONFIG_LIST       \
+                                     $CONFIG_EXTRA      \
+                                     $ALL_COMPONENTS    \
+
+echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
+echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
+
+# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
+cp_if_changed $TMPH config.h
+touch .config
+
+enabled yasm && cp_if_changed $TMPASM config.asm
+
+cat > $TMPH <<EOF
+/* Generated by ffconf */
+#ifndef AVUTIL_AVCONFIG_H
+#define AVUTIL_AVCONFIG_H
+EOF
+
+print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
+
+echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
+
+cp_if_changed $TMPH libavutil/avconfig.h
+
+if test -n "$WARNINGS"; then
+    printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
+    enabled fatal_warnings && exit 1
+fi
+
+# generate the lists of enabled components
+print_enabled_components(){
+    file=$1
+    struct_name=$2
+    name=$3
+    shift 3
+    echo "static const $struct_name *$name[] = {" > $TMPH
+    for c in $*; do
+        enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
+    done
+    echo "    NULL };" >> $TMPH
+    cp_if_changed $TMPH $file
+}
+
+print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
+print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
+
+# build pkg-config files
+
+lib_version(){
+    eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
+}
+
+pkgconfig_generate(){
+    name=$1
+    shortname=${name#lib}${build_suffix}
+    comment=$2
+    version=$3
+    libs=$4
+    requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
+    requires=${requires%, }
+    enabled ${name#lib} || return 0
+    mkdir -p $name
+    cat <<EOF > $name/$name${build_suffix}.pc
+prefix=$prefix
+exec_prefix=\${prefix}
+libdir=$libdir
+includedir=$incdir
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $(enabled shared || echo $requires)
+Requires.private: $(enabled shared && echo $requires)
+Conflicts:
+Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
+Libs.private: $(enabled shared && echo $libs)
+Cflags: -I\${includedir}
+EOF
+
+mkdir -p doc/examples/pc-uninstalled
+includedir=${source_path}
+[ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
+    cat <<EOF > doc/examples/pc-uninstalled/$name.pc
+prefix=
+exec_prefix=
+libdir=\${pcfiledir}/../../../$name
+includedir=${includedir}
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $requires
+Conflicts:
+Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
+Cflags: -I\${includedir}
+EOF
+}
+
+pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
+pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
+pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
+pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
+pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
+pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
+pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
+pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
+pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/file.list b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/file.list
new file mode 100644
index 000000000..11229e678
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-configure-patch/file.list
@@ -0,0 +1 @@
+ffmpeg-3.1.4/configure
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/create.patch.sh b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/create.patch.sh
new file mode 100755
index 000000000..d657c8d1d
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/create.patch.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+VERSION=3.1.4
+
+tar --files-from=file.list -xJvf ../ffmpeg-$VERSION.tar.xz
+mv ffmpeg-$VERSION ffmpeg-$VERSION-orig
+
+cp -rf ./ffmpeg-$VERSION-new ./ffmpeg-$VERSION
+
+diff -b --unified -Nr  ffmpeg-$VERSION-orig  ffmpeg-$VERSION > ffmpeg-$VERSION-openh264.patch
+
+mv ffmpeg-$VERSION-openh264.patch ../patches
+
+rm -rf ./ffmpeg-$VERSION
+rm -rf ./ffmpeg-$VERSION-orig
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/ffmpeg-3.1.4-new/libavcodec/libopenh264enc.c b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/ffmpeg-3.1.4-new/libavcodec/libopenh264enc.c
new file mode 100644
index 000000000..48ff44f4c
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/ffmpeg-3.1.4-new/libavcodec/libopenh264enc.c
@@ -0,0 +1,327 @@
+/*
+ * OpenH264 video encoder
+ * Copyright (C) 2014 Martin Storsjo
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <wels/codec_api.h>
+#include <wels/codec_ver.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/common.h"
+#include "libavutil/opt.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
+
+#include "avcodec.h"
+#include "internal.h"
+
+typedef struct SVCContext {
+    const AVClass *av_class;
+    ISVCEncoder *encoder;
+    int slice_mode;
+    int rc_mode;
+    int loopfilter;
+    char *profile;
+    int max_nal_size;
+    int slice_mbs;
+    int skip_frames;
+    int skipped;
+    int cabac;
+} SVCContext;
+
+#define OPENH264_VER_AT_LEAST(maj, min) \
+    ((OPENH264_MAJOR  > (maj)) || \
+     (OPENH264_MAJOR == (maj) && OPENH264_MINOR >= (min)))
+
+#define OFFSET(x) offsetof(SVCContext, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+    { "slice_mode", "set slice mode", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_SINGLE_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE, "slice_mode" },
+        { "single", "single slice per frame", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SINGLE_SLICE }, 0, 0, VE, "slice_mode" },
+        { "fixed", "a fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
+        { "raster", "slicing acording to macroblock numbers per each slice", 0, AV_OPT_TYPE_CONST, { .i64 = SM_RASTER_SLICE }, 0, 0, VE, "slice_mode" },
+        { "sizelimited", "slicing according to slice size", 0, AV_OPT_TYPE_CONST, { .i64 = SM_SIZELIMITED_SLICE }, 0, 0, VE, "slice_mode" },
+    { "rc_mode", "set rate controle mode", OFFSET(rc_mode), AV_OPT_TYPE_INT, { .i64 = RC_QUALITY_MODE }, RC_OFF_MODE, RC_BITRATE_MODE_POST_SKIP, VE, "rc_mode" },
+        { "quality", "quality-based mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_QUALITY_MODE }, 0, 0, VE, "rc_mode" },
+        { "bitrate", "bitrate-based mode", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BITRATE_MODE }, 0, 0, VE, "rc_mode" },
+        { "bufferbased" , "using buffer status to adjust bitrate", 0, AV_OPT_TYPE_CONST, { .i64 = RC_BUFFERBASED_MODE }, 0, 0, VE, "rc_mode" },
+        { "timestamp", "using timestamp to adjust bitrate", 0, AV_OPT_TYPE_CONST, { .i64 = RC_TIMESTAMP_MODE }, 0, 0, VE, "rc_mode" },
+        { "off", "no bitrate control", 0, AV_OPT_TYPE_CONST, { .i64 = RC_OFF_MODE }, 0, 0, VE, "rc_mode" },
+    { "loopfilter", "enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
+    { "profile", "set profile restrictions", OFFSET(profile), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, VE },
+    { "max_nal_size", "set maximum slice size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
+    { "slice_mbs", "set number of macroblocks per size", OFFSET(slice_mbs), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
+    { "allow_skip_frames", "allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
+    { "entropy", "set entropy encoding mode", OFFSET(cabac), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE, "entropy_mode" },
+        { "cabac", "use CABAC", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, VE, "entropy_mode" },
+        { "cavlc", "use CAVLC", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, VE, "entropy_mode" },
+    { NULL }
+};
+
+static const AVClass class = {
+    "libopenh264enc", av_default_item_name, options, LIBAVUTIL_VERSION_INT
+};
+
+// Convert libopenh264 log level to equivalent ffmpeg log level.
+static int libopenh264_to_ffmpeg_log_level(int libopenh264_log_level)
+{
+    if      (libopenh264_log_level >= WELS_LOG_DETAIL)  return AV_LOG_TRACE;
+    else if (libopenh264_log_level >= WELS_LOG_DEBUG)   return AV_LOG_DEBUG;
+    else if (libopenh264_log_level >= WELS_LOG_INFO)    return AV_LOG_VERBOSE;
+    else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
+    else if (libopenh264_log_level >= WELS_LOG_ERROR)   return AV_LOG_ERROR;
+    else                                                return AV_LOG_QUIET;
+}
+
+// This function will be provided to the libopenh264 library.  The function will be called
+// when libopenh264 wants to log a message (error, warning, info, etc.).  The signature for
+// this function (defined in .../codec/api/svc/codec_api.h) is:
+//
+//        typedef void (*WelsTraceCallback) (void* ctx, int level, const char* string);
+
+static void libopenh264_trace_callback(void *ctx, int level, const char *msg)
+{
+    // The message will be logged only if the requested EQUIVALENT ffmpeg log level is
+    // less than or equal to the current ffmpeg log level.
+    int equiv_ffmpeg_log_level = libopenh264_to_ffmpeg_log_level(level);
+    av_log(ctx, equiv_ffmpeg_log_level, "%s\n", msg);
+}
+
+static av_cold int svc_encode_close(AVCodecContext *avctx)
+{
+    SVCContext *s = avctx->priv_data;
+
+    if (s->encoder)
+        WelsDestroySVCEncoder(s->encoder);
+    if (s->skipped > 0)
+        av_log(avctx, AV_LOG_WARNING, "%d frames skipped\n", s->skipped);
+    return 0;
+}
+
+static av_cold int svc_encode_init(AVCodecContext *avctx)
+{
+    SVCContext *s = avctx->priv_data;
+    SEncParamExt param = { 0 };
+    int err = AVERROR_UNKNOWN;
+    int log_level;
+    WelsTraceCallback callback_function;
+    AVCPBProperties *props;
+
+    // Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
+    // function (for functions returning larger structs), thus skip the check in those
+    // configurations.
+#if !defined(_WIN32) || !defined(__GNUC__) || !ARCH_X86_32 || AV_GCC_VERSION_AT_LEAST(4, 7)
+    OpenH264Version libver = WelsGetCodecVersion();
+    if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
+        av_log(avctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
+        return AVERROR(EINVAL);
+    }
+#endif
+
+    if (WelsCreateSVCEncoder(&s->encoder)) {
+        av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n");
+        return AVERROR_UNKNOWN;
+    }
+
+    // Pass all libopenh264 messages to our callback, to allow ourselves to filter them.
+    log_level = WELS_LOG_DETAIL;
+    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level);
+
+    // Set the logging callback function to one that uses av_log() (see implementation above).
+    callback_function = (WelsTraceCallback) libopenh264_trace_callback;
+    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, (void *)&callback_function);
+
+    // Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log().
+    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, (void *)&avctx);
+
+    (*s->encoder)->GetDefaultParams(s->encoder, &param);
+
+#if FF_API_CODER_TYPE
+FF_DISABLE_DEPRECATION_WARNINGS
+    if (!s->cabac)
+        s->cabac = avctx->coder_type == FF_CODER_TYPE_AC;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+    param.fMaxFrameRate              = 1/av_q2d(avctx->time_base);
+    param.iPicWidth                  = avctx->width;
+    param.iPicHeight                 = avctx->height;
+    param.iTargetBitrate             = avctx->bit_rate;
+    param.iMaxBitrate                = FFMAX(avctx->rc_max_rate, avctx->bit_rate);
+    param.iRCMode                    = s->rc_mode;
+    param.iTemporalLayerNum          = 1;
+    param.iSpatialLayerNum           = 1;
+    param.bEnableDenoise             = 0;
+    param.bEnableBackgroundDetection = 1;
+    param.bEnableAdaptiveQuant       = 1;
+    param.bEnableFrameSkip           = s->skip_frames;
+    param.bEnableLongTermReference   = 0;
+    param.iLtrMarkPeriod             = 30;
+    param.uiIntraPeriod              = avctx->gop_size;
+#if OPENH264_VER_AT_LEAST(1, 4)
+    param.eSpsPpsIdStrategy          = CONSTANT_ID;
+#else
+    param.bEnableSpsPpsIdAddition    = 0;
+#endif
+    param.bPrefixNalAddingCtrl       = 0;
+    param.iLoopFilterDisableIdc      = !s->loopfilter;
+    param.iEntropyCodingModeFlag     = 0;
+    if (s->profile && !strcmp(s->profile, "main"))
+        param.iEntropyCodingModeFlag = 1;
+    else if (!s->profile && s->cabac)
+        param.iEntropyCodingModeFlag = 1;
+    param.iMultipleThreadIdc         = avctx->thread_count;
+
+    param.sSpatialLayers[0].iVideoWidth         = param.iPicWidth;
+    param.sSpatialLayers[0].iVideoHeight        = param.iPicHeight;
+    param.sSpatialLayers[0].fFrameRate          = param.fMaxFrameRate;
+    param.sSpatialLayers[0].iSpatialBitrate     = param.iTargetBitrate;
+    param.sSpatialLayers[0].iMaxSpatialBitrate  = param.iMaxBitrate;
+
+    param.sSpatialLayers[0].sSliceArgument.uiSliceMode = s->slice_mode;
+
+    if (s->slice_mode == SM_FIXEDSLCNUM_SLICE) {
+        param.sSpatialLayers[0].sSliceArgument.uiSliceNum = avctx->slices;
+    } else if (s->slice_mode == SM_RASTER_SLICE) {
+        if (s->slice_mbs) {
+            param.sSpatialLayers[0].sSliceArgument.uiSliceMbNum[0] = s->slice_mbs;
+        } else {
+            av_log(avctx, AV_LOG_ERROR, "Invalid -slice_mbs, specify a valid slice_mbs to use -slice_mode raster\n");
+            goto fail;
+        }
+    } else if (s->slice_mode == SM_SIZELIMITED_SLICE) {
+        if (s->max_nal_size) {
+            param.uiMaxNalSize = s->max_nal_size;
+            param.sSpatialLayers[0].sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
+        } else {
+            av_log(avctx, AV_LOG_ERROR, "Invalid -max_nal_size, specify a valid max_nal_size to use -slice_mode sizelimited\n");
+            goto fail;
+        }
+    }
+
+    if ((*s->encoder)->InitializeExt(s->encoder, &param) != cmResultSuccess) {
+        av_log(avctx, AV_LOG_ERROR, "Initialize failed\n");
+        goto fail;
+    }
+
+    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
+        SFrameBSInfo fbi = { 0 };
+        int i, size = 0;
+        (*s->encoder)->EncodeParameterSets(s->encoder, &fbi);
+        for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++)
+            size += fbi.sLayerInfo[0].pNalLengthInByte[i];
+        avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!avctx->extradata) {
+            err = AVERROR(ENOMEM);
+            goto fail;
+        }
+        avctx->extradata_size = size;
+        memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size);
+    }
+
+    props = ff_add_cpb_side_data(avctx);
+    if (!props) {
+        err = AVERROR(ENOMEM);
+        goto fail;
+    }
+    props->max_bitrate = param.iMaxBitrate;
+    props->avg_bitrate = param.iTargetBitrate;
+
+    return 0;
+
+fail:
+    svc_encode_close(avctx);
+    return err;
+}
+
+static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
+                            const AVFrame *frame, int *got_packet)
+{
+    SVCContext *s = avctx->priv_data;
+    SFrameBSInfo fbi = { 0 };
+    int i, ret;
+    int encoded;
+    SSourcePicture sp = { 0 };
+    int size = 0, layer, first_layer = 0;
+    int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 };
+
+    sp.iColorFormat = videoFormatI420;
+    for (i = 0; i < 3; i++) {
+        sp.iStride[i] = frame->linesize[i];
+        sp.pData[i]   = frame->data[i];
+    }
+    sp.iPicWidth  = avctx->width;
+    sp.iPicHeight = avctx->height;
+
+    encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi);
+    if (encoded != cmResultSuccess) {
+        av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n");
+        return AVERROR_UNKNOWN;
+    }
+    if (fbi.eFrameType == videoFrameTypeSkip) {
+        s->skipped++;
+        av_log(avctx, AV_LOG_DEBUG, "frame skipped\n");
+        return 0;
+    }
+    first_layer = 0;
+    // Normal frames are returned with one single layer, while IDR
+    // frames have two layers, where the first layer contains the SPS/PPS.
+    // If using global headers, don't include the SPS/PPS in the returned
+    // packet - thus, only return one layer.
+    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
+        first_layer = fbi.iLayerNum - 1;
+
+    for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
+        for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++)
+            layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i];
+        size += layer_size[layer];
+    }
+    av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount);
+
+    if ((ret = ff_alloc_packet2(avctx, avpkt, size, size))) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+        return ret;
+    }
+    size = 0;
+    for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
+        memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]);
+        size += layer_size[layer];
+    }
+    avpkt->pts = frame->pts;
+    if (fbi.eFrameType == videoFrameTypeIDR)
+        avpkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
+}
+
+AVCodec ff_libopenh264_encoder = {
+    .name           = "libopenh264",
+    .long_name      = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H264,
+    .priv_data_size = sizeof(SVCContext),
+    .init           = svc_encode_init,
+    .encode2        = svc_encode_frame,
+    .close          = svc_encode_close,
+    .capabilities   = AV_CODEC_CAP_AUTO_THREADS,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
+                                                    AV_PIX_FMT_NONE },
+    .priv_class     = &class,
+};
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/file.list b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/file.list
new file mode 100644
index 000000000..76b8fef9e
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openh264-patch/file.list
@@ -0,0 +1 @@
+ffmpeg-3.1.4/libavcodec/libopenh264enc.c
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/create.patch.sh b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/create.patch.sh
new file mode 100755
index 000000000..7e4ff4fa9
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/create.patch.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+VERSION=3.1.4
+
+tar --files-from=file.list -xJvf ../ffmpeg-$VERSION.tar.xz
+mv ffmpeg-$VERSION ffmpeg-$VERSION-orig
+
+cp -rf ./ffmpeg-$VERSION-new ./ffmpeg-$VERSION
+
+diff -b --unified -Nr  ffmpeg-$VERSION-orig  ffmpeg-$VERSION > ffmpeg-$VERSION-openjpeg.patch
+
+mv ffmpeg-$VERSION-openjpeg.patch ../patches
+
+rm -rf ./ffmpeg-$VERSION
+rm -rf ./ffmpeg-$VERSION-orig
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/ffmpeg-3.1.4-new/configure b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/ffmpeg-3.1.4-new/configure
new file mode 100755
index 000000000..a6d9ffb50
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/ffmpeg-3.1.4-new/configure
@@ -0,0 +1,6760 @@
+#!/bin/sh
+#
+# FFmpeg configure script
+#
+# Copyright (c) 2000-2002 Fabrice Bellard
+# Copyright (c) 2005-2008 Diego Biurrun
+# Copyright (c) 2005-2008 Mans Rullgard
+#
+
+# Prevent locale nonsense from breaking basic text processing.
+LC_ALL=C
+export LC_ALL
+
+# make sure we are running under a compatible shell
+# try to make this part work with most shells
+
+try_exec(){
+    echo "Trying shell $1"
+    type "$1" > /dev/null 2>&1 && exec "$@"
+}
+
+unset foo
+(: ${foo%%bar}) 2> /dev/null
+E1="$?"
+
+(: ${foo?}) 2> /dev/null
+E2="$?"
+
+if test "$E1" != 0 || test "$E2" = 0; then
+    echo "Broken shell detected.  Trying alternatives."
+    export FF_CONF_EXEC
+    if test "0$FF_CONF_EXEC" -lt 1; then
+        FF_CONF_EXEC=1
+        try_exec bash "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 2; then
+        FF_CONF_EXEC=2
+        try_exec ksh "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 3; then
+        FF_CONF_EXEC=3
+        try_exec /usr/xpg4/bin/sh "$0" "$@"
+    fi
+    echo "No compatible shell script interpreter found."
+    echo "This configure script requires a POSIX-compatible shell"
+    echo "such as bash or ksh."
+    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
+    echo "Instead, install a working POSIX-compatible shell."
+    echo "Disabling this configure test will create a broken FFmpeg."
+    if test "$BASH_VERSION" = '2.04.0(1)-release'; then
+        echo "This bash version ($BASH_VERSION) is broken on your platform."
+        echo "Upgrade to a later version if available."
+    fi
+    exit 1
+fi
+
+test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
+
+show_help(){
+    cat <<EOF
+Usage: configure [options]
+Options: [defaults in brackets after descriptions]
+
+Help options:
+  --help                   print this message
+  --list-decoders          show all available decoders
+  --list-encoders          show all available encoders
+  --list-hwaccels          show all available hardware accelerators
+  --list-demuxers          show all available demuxers
+  --list-muxers            show all available muxers
+  --list-parsers           show all available parsers
+  --list-protocols         show all available protocols
+  --list-bsfs              show all available bitstream filters
+  --list-indevs            show all available input devices
+  --list-outdevs           show all available output devices
+  --list-filters           show all available filters
+
+Standard options:
+  --logfile=FILE           log tests and output to FILE [config.log]
+  --disable-logging        do not log configure debug information
+  --fatal-warnings         fail if any configure warning is generated
+  --prefix=PREFIX          install in PREFIX [$prefix]
+  --bindir=DIR             install binaries in DIR [PREFIX/bin]
+  --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
+  --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
+  --libdir=DIR             install libs in DIR [PREFIX/lib]
+  --shlibdir=DIR           install shared libs in DIR [LIBDIR]
+  --incdir=DIR             install includes in DIR [PREFIX/include]
+  --mandir=DIR             install man page in DIR [PREFIX/share/man]
+  --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
+  --enable-rpath           use rpath to allow installing libraries in paths
+                           not part of the dynamic linker search path
+                           use rpath when linking programs [USE WITH CARE]
+  --install-name-dir=DIR   Darwin directory name for installed targets
+
+Licensing options:
+  --enable-gpl             allow use of GPL code, the resulting libs
+                           and binaries will be under GPL [no]
+  --enable-version3        upgrade (L)GPL to version 3 [no]
+  --enable-nonfree         allow use of nonfree code, the resulting libs
+                           and binaries will be unredistributable [no]
+
+Configuration options:
+  --disable-static         do not build static libraries [no]
+  --enable-shared          build shared libraries [no]
+  --enable-small           optimize for size instead of speed
+  --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
+  --enable-gray            enable full grayscale support (slower color)
+  --disable-swscale-alpha  disable alpha channel support in swscale
+  --disable-all            disable building components, libraries and programs
+  --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
+  --enable-raise-major     increase major version numbers in sonames [no]
+
+Program options:
+  --disable-programs       do not build command line programs
+  --disable-ffmpeg         disable ffmpeg build
+  --disable-ffplay         disable ffplay build
+  --disable-ffprobe        disable ffprobe build
+  --disable-ffserver       disable ffserver build
+
+Documentation options:
+  --disable-doc            do not build documentation
+  --disable-htmlpages      do not build HTML documentation pages
+  --disable-manpages       do not build man documentation pages
+  --disable-podpages       do not build POD documentation pages
+  --disable-txtpages       do not build text documentation pages
+
+Component options:
+  --disable-avdevice       disable libavdevice build
+  --disable-avcodec        disable libavcodec build
+  --disable-avformat       disable libavformat build
+  --disable-swresample     disable libswresample build
+  --disable-swscale        disable libswscale build
+  --disable-postproc       disable libpostproc build
+  --disable-avfilter       disable libavfilter build
+  --enable-avresample      enable libavresample build [no]
+  --disable-pthreads       disable pthreads [autodetect]
+  --disable-w32threads     disable Win32 threads [autodetect]
+  --disable-os2threads     disable OS/2 threads [autodetect]
+  --disable-network        disable network support [no]
+  --disable-dct            disable DCT code
+  --disable-dwt            disable DWT code
+  --disable-error-resilience disable error resilience code
+  --disable-lsp            disable LSP code
+  --disable-lzo            disable LZO decoder code
+  --disable-mdct           disable MDCT code
+  --disable-rdft           disable RDFT code
+  --disable-fft            disable FFT code
+  --disable-faan           disable floating point AAN (I)DCT code
+  --disable-pixelutils     disable pixel utils in libavutil
+
+Individual component options:
+  --disable-everything     disable all components listed below
+  --disable-encoder=NAME   disable encoder NAME
+  --enable-encoder=NAME    enable encoder NAME
+  --disable-encoders       disable all encoders
+  --disable-decoder=NAME   disable decoder NAME
+  --enable-decoder=NAME    enable decoder NAME
+  --disable-decoders       disable all decoders
+  --disable-hwaccel=NAME   disable hwaccel NAME
+  --enable-hwaccel=NAME    enable hwaccel NAME
+  --disable-hwaccels       disable all hwaccels
+  --disable-muxer=NAME     disable muxer NAME
+  --enable-muxer=NAME      enable muxer NAME
+  --disable-muxers         disable all muxers
+  --disable-demuxer=NAME   disable demuxer NAME
+  --enable-demuxer=NAME    enable demuxer NAME
+  --disable-demuxers       disable all demuxers
+  --enable-parser=NAME     enable parser NAME
+  --disable-parser=NAME    disable parser NAME
+  --disable-parsers        disable all parsers
+  --enable-bsf=NAME        enable bitstream filter NAME
+  --disable-bsf=NAME       disable bitstream filter NAME
+  --disable-bsfs           disable all bitstream filters
+  --enable-protocol=NAME   enable protocol NAME
+  --disable-protocol=NAME  disable protocol NAME
+  --disable-protocols      disable all protocols
+  --enable-indev=NAME      enable input device NAME
+  --disable-indev=NAME     disable input device NAME
+  --disable-indevs         disable input devices
+  --enable-outdev=NAME     enable output device NAME
+  --disable-outdev=NAME    disable output device NAME
+  --disable-outdevs        disable output devices
+  --disable-devices        disable all devices
+  --enable-filter=NAME     enable filter NAME
+  --disable-filter=NAME    disable filter NAME
+  --disable-filters        disable all filters
+
+External library support:
+
+  Using any of the following switches will allow FFmpeg to link to the
+  corresponding external library. All the components depending on that library
+  will become enabled, if all their other dependencies are met and they are not
+  explicitly disabled. E.g. --enable-libwavpack will enable linking to
+  libwavpack and allow the libwavpack encoder to be built, unless it is
+  specifically disabled with --disable-encoder=libwavpack.
+
+  Note that only the system libraries are auto-detected. All the other external
+  libraries must be explicitly enabled.
+
+  Also note that the following help text describes the purpose of the libraries
+  themselves, not all their features will necessarily be usable by FFmpeg.
+
+  --enable-avisynth        enable reading of AviSynth script files [no]
+  --disable-bzlib          disable bzlib [autodetect]
+  --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
+  --enable-frei0r          enable frei0r video filtering [no]
+  --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
+                           if openssl, librtmp or gmp is not used [no]
+  --enable-gmp             enable gmp, needed for rtmp(t)e support
+                           if openssl or librtmp is not used [no]
+  --enable-gnutls          enable gnutls, needed for https support
+                           if openssl is not used [no]
+  --disable-iconv          disable iconv [autodetect]
+  --enable-jni             enable JNI support [no]
+  --enable-ladspa          enable LADSPA audio filtering [no]
+  --enable-libass          enable libass subtitles rendering,
+                           needed for subtitles and ass filter [no]
+  --enable-libbluray       enable BluRay reading using libbluray [no]
+  --enable-libbs2b         enable bs2b DSP library [no]
+  --enable-libcaca         enable textual display using libcaca [no]
+  --enable-libcelt         enable CELT decoding via libcelt [no]
+  --enable-libcdio         enable audio CD grabbing with libcdio [no]
+  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
+                           and libraw1394 [no]
+  --enable-libebur128      enable libebur128 for EBU R128 measurement,
+                           needed for loudnorm filter [no]
+  --enable-libfaac         enable AAC encoding via libfaac [no]
+  --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
+  --enable-libflite        enable flite (voice synthesis) support via libflite [no]
+  --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
+  --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
+  --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
+  --enable-libgme          enable Game Music Emu via libgme [no]
+  --enable-libgsm          enable GSM de/encoding via libgsm [no]
+  --enable-libiec61883     enable iec61883 via libiec61883 [no]
+  --enable-libilbc         enable iLBC de/encoding via libilbc [no]
+  --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
+  --enable-libmodplug      enable ModPlug via libmodplug [no]
+  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
+  --enable-libnut          enable NUT (de)muxing via libnut,
+                           native (de)muxer exists [no]
+  --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
+  --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
+  --enable-libopencv       enable video filtering via libopencv [no]
+  --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
+  --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
+  --enable-libopus         enable Opus de/encoding via libopus [no]
+  --enable-libpulse        enable Pulseaudio input via libpulse [no]
+  --enable-librubberband   enable rubberband needed for rubberband filter [no]
+  --enable-librtmp         enable RTMP[E] support via librtmp [no]
+  --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
+  --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
+  --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
+  --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
+  --enable-libsoxr         enable Include libsoxr resampling [no]
+  --enable-libspeex        enable Speex de/encoding via libspeex [no]
+  --enable-libssh          enable SFTP protocol via libssh [no]
+  --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
+  --enable-libtheora       enable Theora encoding via libtheora [no]
+  --enable-libtwolame      enable MP2 encoding via libtwolame [no]
+  --enable-libv4l2         enable libv4l2/v4l-utils [no]
+  --enable-libvidstab      enable video stabilization using vid.stab [no]
+  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
+  --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
+                           native implementation exists [no]
+  --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
+  --enable-libwavpack      enable wavpack encoding via libwavpack [no]
+  --enable-libwebp         enable WebP encoding via libwebp [no]
+  --enable-libx264         enable H.264 encoding via x264 [no]
+  --enable-libx265         enable HEVC encoding via x265 [no]
+  --enable-libxavs         enable AVS encoding via xavs [no]
+  --enable-libxcb          enable X11 grabbing using XCB [autodetect]
+  --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
+  --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
+  --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
+  --enable-libxvid         enable Xvid encoding via xvidcore,
+                           native MPEG-4/Xvid encoder exists [no]
+  --enable-libzimg         enable z.lib, needed for zscale filter [no]
+  --enable-libzmq          enable message passing via libzmq [no]
+  --enable-libzvbi         enable teletext support via libzvbi [no]
+  --disable-lzma           disable lzma [autodetect]
+  --enable-decklink        enable Blackmagic DeckLink I/O support [no]
+  --enable-mediacodec      enable Android MediaCodec support [no]
+  --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
+  --enable-openal          enable OpenAL 1.1 capture support [no]
+  --enable-opencl          enable OpenCL code
+  --enable-opengl          enable OpenGL rendering [no]
+  --enable-openssl         enable openssl, needed for https support
+                           if gnutls is not used [no]
+  --disable-schannel       disable SChannel SSP, needed for TLS support on
+                           Windows if openssl and gnutls are not used [autodetect]
+  --disable-sdl            disable sdl [autodetect]
+  --disable-securetransport disable Secure Transport, needed for TLS support
+                           on OSX if openssl and gnutls are not used [autodetect]
+  --enable-x11grab         enable X11 grabbing (legacy) [no]
+  --disable-xlib           disable xlib [autodetect]
+  --disable-zlib           disable zlib [autodetect]
+
+  The following libraries provide various hardware acceleration features:
+  --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
+  --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
+  --enable-cuvid           enable Nvidia CUVID support [autodetect]
+  --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
+  --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
+  --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
+  --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
+  --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
+  --enable-nvenc           enable Nvidia video encoding code [no]
+  --enable-omx             enable OpenMAX IL code [no]
+  --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
+  --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
+  --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
+  --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
+  --disable-videotoolbox   disable VideoToolbox code [autodetect]
+
+Toolchain options:
+  --arch=ARCH              select architecture [$arch]
+  --cpu=CPU                select the minimum required CPU (affects
+                           instruction selection, may crash on older CPUs)
+  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
+  --progs-suffix=SUFFIX    program name suffix []
+  --enable-cross-compile   assume a cross-compiler is used
+  --sysroot=PATH           root of cross-build tree
+  --sysinclude=PATH        location of cross-build system headers
+  --target-os=OS           compiler targets OS [$target_os]
+  --target-exec=CMD        command to run executables on target
+  --target-path=DIR        path to view of build directory on target
+  --target-samples=DIR     path to samples directory on target
+  --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
+  --toolchain=NAME         set tool defaults according to NAME
+  --nm=NM                  use nm tool NM [$nm_default]
+  --ar=AR                  use archive tool AR [$ar_default]
+  --as=AS                  use assembler AS [$as_default]
+  --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
+  --strip=STRIP            use strip tool STRIP [$strip_default]
+  --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
+  --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
+  --cc=CC                  use C compiler CC [$cc_default]
+  --cxx=CXX                use C compiler CXX [$cxx_default]
+  --objcc=OCC              use ObjC compiler OCC [$cc_default]
+  --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
+  --ld=LD                  use linker LD [$ld_default]
+  --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
+  --pkg-config-flags=FLAGS pass additional flags to pkgconf []
+  --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
+  --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
+  --host-cc=HOSTCC         use host C compiler HOSTCC
+  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
+  --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
+  --host-ld=HOSTLD         use host linker HOSTLD
+  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
+  --host-libs=HLIBS        use libs HLIBS when linking for host
+  --host-os=OS             compiler host OS [$target_os]
+  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
+  --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
+  --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
+  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
+  --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
+  --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
+  --extra-libs=ELIBS       add ELIBS [$ELIBS]
+  --extra-version=STRING   version string suffix []
+  --optflags=OPTFLAGS      override optimization-related compiler flags
+  --build-suffix=SUFFIX    library name suffix []
+  --enable-pic             build position-independent code
+  --enable-thumb           compile for Thumb instruction set
+  --enable-lto             use link-time optimization
+  --env="ENV=override"     override the environment variables
+
+Advanced options (experts only):
+  --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
+  --custom-allocator=NAME  use a supported custom allocator
+  --disable-symver         disable symbol versioning
+  --enable-hardcoded-tables use hardcoded tables instead of runtime generation
+  --disable-safe-bitstream-reader
+                           disable buffer boundary checking in bitreaders
+                           (faster, but may crash)
+  --enable-memalign-hack   emulate memalign, interferes with memory debuggers
+  --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
+
+Optimization options (experts only):
+  --disable-asm            disable all assembly optimizations
+  --disable-altivec        disable AltiVec optimizations
+  --disable-vsx            disable VSX optimizations
+  --disable-power8         disable POWER8 optimizations
+  --disable-amd3dnow       disable 3DNow! optimizations
+  --disable-amd3dnowext    disable 3DNow! extended optimizations
+  --disable-mmx            disable MMX optimizations
+  --disable-mmxext         disable MMXEXT optimizations
+  --disable-sse            disable SSE optimizations
+  --disable-sse2           disable SSE2 optimizations
+  --disable-sse3           disable SSE3 optimizations
+  --disable-ssse3          disable SSSE3 optimizations
+  --disable-sse4           disable SSE4 optimizations
+  --disable-sse42          disable SSE4.2 optimizations
+  --disable-avx            disable AVX optimizations
+  --disable-xop            disable XOP optimizations
+  --disable-fma3           disable FMA3 optimizations
+  --disable-fma4           disable FMA4 optimizations
+  --disable-avx2           disable AVX2 optimizations
+  --disable-aesni          disable AESNI optimizations
+  --disable-armv5te        disable armv5te optimizations
+  --disable-armv6          disable armv6 optimizations
+  --disable-armv6t2        disable armv6t2 optimizations
+  --disable-vfp            disable VFP optimizations
+  --disable-neon           disable NEON optimizations
+  --disable-inline-asm     disable use of inline assembly
+  --disable-yasm           disable use of nasm/yasm assembly
+  --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
+  --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
+  --disable-msa            disable MSA optimizations
+  --disable-mipsfpu        disable floating point MIPS optimizations
+  --disable-mmi            disable Loongson SIMD optimizations
+  --disable-fast-unaligned consider unaligned accesses slow
+
+Developer options (useful when working on FFmpeg itself):
+  --disable-debug          disable debugging symbols
+  --enable-debug=LEVEL     set the debug level [$debuglevel]
+  --disable-optimizations  disable compiler optimizations
+  --enable-extra-warnings  enable more compiler warnings
+  --disable-stripping      disable stripping of executables and shared libraries
+  --assert-level=level     0(default), 1 or 2, amount of assertion testing,
+                           2 causes a slowdown at runtime.
+  --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
+  --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
+                           leaks and errors, using the specified valgrind binary.
+                           Cannot be combined with --target-exec
+  --enable-ftrapv          Trap arithmetic overflows
+  --samples=PATH           location of test samples for FATE, if not set use
+                           \$FATE_SAMPLES at make invocation time.
+  --enable-neon-clobber-test check NEON registers for clobbering (should be
+                           used only for debugging purposes)
+  --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
+                           should be used only for debugging purposes)
+  --enable-random          randomly enable/disable components
+  --disable-random
+  --enable-random=LIST     randomly enable/disable specific components or
+  --disable-random=LIST    component groups. LIST is a comma-separated list
+                           of NAME[:PROB] entries where NAME is a component
+                           (group) and PROB the probability associated with
+                           NAME (default 0.5).
+  --random-seed=VALUE      seed value for --enable/disable-random
+  --disable-valgrind-backtrace do not print a backtrace under Valgrind
+                           (only applies to --disable-optimizations builds)
+
+NOTE: Object files are built at the place where configure is launched.
+EOF
+  exit 0
+}
+
+quotes='""'
+if test -t 1 && which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+    if test -n "$ncolors" && test $ncolors -ge 8; then
+        bold_color=$(tput bold)
+        warn_color=$(tput setaf 3)
+        error_color=$(tput setaf 1)
+        reset_color=$(tput sgr0)
+    fi
+    # 72 used instead of 80 since that's the default of pr
+    ncols=$(tput cols)
+fi
+: ${ncols:=72}
+
+log(){
+    echo "$@" >> $logfile
+}
+
+log_file(){
+    log BEGIN $1
+    pr -n -t $1 >> $logfile
+    log END $1
+}
+
+warn(){
+    log "WARNING: $*"
+    WARNINGS="${WARNINGS}WARNING: $*\n"
+}
+
+die(){
+    log "$@"
+    echo "$error_color$bold_color$@$reset_color"
+    cat <<EOF
+
+If you think configure made a mistake, make sure you are using the latest
+version from Git.  If the latest version fails, report the problem to the
+ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
+EOF
+    if disabled logging; then
+        cat <<EOF
+Rerun configure with logging enabled (do not use --disable-logging), and
+include the log this produces with your report.
+EOF
+    else
+        cat <<EOF
+Include the log file "$logfile" produced by configure as this will help
+solve the problem.
+EOF
+    fi
+    exit 1
+}
+
+# Avoid locale weirdness, besides we really just want to translate ASCII.
+toupper(){
+    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
+}
+
+tolower(){
+    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
+}
+
+c_escape(){
+    echo "$*" | sed 's/["\\]/\\\0/g'
+}
+
+sh_quote(){
+    v=$(echo "$1" | sed "s/'/'\\\\''/g")
+    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
+    echo "$v"
+}
+
+cleanws(){
+    echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
+}
+
+filter(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) echo $v ;; esac"
+    done
+}
+
+filter_out(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) ;; *) echo $v ;; esac"
+    done
+}
+
+map(){
+    m=$1
+    shift
+    for v; do eval $m; done
+}
+
+add_suffix(){
+    suffix=$1
+    shift
+    for v; do echo ${v}${suffix}; done
+}
+
+set_all(){
+    value=$1
+    shift
+    for var in $*; do
+        eval $var=$value
+    done
+}
+
+set_weak(){
+    value=$1
+    shift
+    for var; do
+        eval : \${$var:=$value}
+    done
+}
+
+sanitize_var_name(){
+    echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
+}
+
+set_safe(){
+    var=$1
+    shift
+    eval $(sanitize_var_name "$var")='$*'
+}
+
+get_safe(){
+    eval echo \$$(sanitize_var_name "$1")
+}
+
+pushvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:=0}
+        eval ${pvar}_${level}="\$$pvar"
+        eval ${pvar}_level=$(($level+1))
+    done
+}
+
+popvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:-0}
+        test $level = 0 && continue
+        eval level=$(($level-1))
+        eval $pvar="\${${pvar}_${level}}"
+        eval ${pvar}_level=$level
+        eval unset ${pvar}_${level}
+    done
+}
+
+enable(){
+    set_all yes $*
+}
+
+disable(){
+    set_all no $*
+}
+
+enable_weak(){
+    set_weak yes $*
+}
+
+disable_weak(){
+    set_weak no $*
+}
+
+enable_safe(){
+    for var; do
+        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+disable_safe(){
+    for var; do
+        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+do_enable_deep(){
+    for var; do
+        enabled $var && continue
+        eval sel="\$${var}_select"
+        eval sgs="\$${var}_suggest"
+        pushvar var sgs
+        enable_deep $sel
+        popvar sgs
+        enable_deep_weak $sgs
+        popvar var
+    done
+}
+
+enable_deep(){
+    do_enable_deep $*
+    enable $*
+}
+
+enable_deep_weak(){
+    for var; do
+        disabled $var && continue
+        pushvar var
+        do_enable_deep $var
+        popvar var
+        enable_weak $var
+    done
+}
+
+enabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xyes"
+}
+
+disabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xno"
+}
+
+enabled_all(){
+    for opt; do
+        enabled $opt || return 1
+    done
+}
+
+disabled_all(){
+    for opt; do
+        disabled $opt || return 1
+    done
+}
+
+enabled_any(){
+    for opt; do
+        enabled $opt && return 0
+    done
+}
+
+disabled_any(){
+    for opt; do
+        disabled $opt && return 0
+    done
+    return 1
+}
+
+set_default(){
+    for opt; do
+        eval : \${$opt:=\$${opt}_default}
+    done
+}
+
+is_in(){
+    value=$1
+    shift
+    for var in $*; do
+        [ $var = $value ] && return 0
+    done
+    return 1
+}
+
+do_check_deps(){
+    for cfg; do
+        cfg="${cfg#!}"
+        enabled ${cfg}_checking && die "Circular dependency for $cfg."
+        disabled ${cfg}_checking && continue
+        enable ${cfg}_checking
+        append allopts $cfg
+
+        eval dep_all="\$${cfg}_deps"
+        eval dep_any="\$${cfg}_deps_any"
+        eval dep_sel="\$${cfg}_select"
+        eval dep_sgs="\$${cfg}_suggest"
+        eval dep_ifa="\$${cfg}_if"
+        eval dep_ifn="\$${cfg}_if_any"
+
+        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+        do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
+        popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+
+        [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
+        [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
+        enabled_all  $dep_all || disable $cfg
+        enabled_any  $dep_any || disable $cfg
+        disabled_any $dep_sel && disable $cfg
+
+        if enabled $cfg; then
+            enable_deep $dep_sel
+            enable_deep_weak $dep_sgs
+        fi
+
+        disable ${cfg}_checking
+    done
+}
+
+check_deps(){
+    unset allopts
+
+    do_check_deps "$@"
+
+    for cfg in $allopts; do
+        enabled $cfg || continue
+        eval dep_extralibs="\$${cfg}_extralibs"
+        test -n "$dep_extralibs" && add_extralibs $dep_extralibs
+    done
+}
+
+print_config(){
+    pfx=$1
+    files=$2
+    shift 2
+    map 'eval echo "$v \${$v:-no}"' "$@" |
+    awk "BEGIN { split(\"$files\", files) }
+        {
+            c = \"$pfx\" toupper(\$1);
+            v = \$2;
+            sub(/yes/, 1, v);
+            sub(/no/,  0, v);
+            for (f in files) {
+                file = files[f];
+                if (file ~ /\\.h\$/) {
+                    printf(\"#define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.asm\$/) {
+                    printf(\"%%define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.mak\$/) {
+                    n = -v ? \"\" : \"!\";
+                    printf(\"%s%s=yes\\n\", n, c) >>file;
+                } else if (file ~ /\\.texi\$/) {
+                    pre = -v ? \"\" : \"@c \";
+                    yesno = \$2;
+                    c2 = tolower(c);
+                    gsub(/_/, \"-\", c2);
+                    printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
+                }
+            }
+        }"
+}
+
+print_enabled(){
+    suf=$1
+    shift
+    for v; do
+        enabled $v && printf "%s\n" ${v%$suf}
+    done
+}
+
+append(){
+    var=$1
+    shift
+    eval "$var=\"\$$var $*\""
+}
+
+prepend(){
+    var=$1
+    shift
+    eval "$var=\"$* \$$var\""
+}
+
+unique(){
+    var=$1
+    uniq_list=""
+    for tok in $(eval echo \$$var); do
+        uniq_list="$(filter_out $tok $uniq_list) $tok"
+    done
+    eval "$var=\"${uniq_list}\""
+}
+
+add_cppflags(){
+    append CPPFLAGS "$@"
+}
+
+add_cflags(){
+    append CFLAGS $($cflags_filter "$@")
+}
+
+add_cxxflags(){
+    append CXXFLAGS $($cflags_filter "$@")
+}
+
+add_asflags(){
+    append ASFLAGS $($asflags_filter "$@")
+}
+
+add_objcflags(){
+    append OBJCFLAGS $($objcflags_filter "$@")
+}
+
+add_ldflags(){
+    append LDFLAGS $($ldflags_filter "$@")
+}
+
+add_ldexeflags(){
+    append LDEXEFLAGS $($ldflags_filter "$@")
+}
+
+add_ldlibflags(){
+    append LDLIBFLAGS $($ldflags_filter "$@")
+}
+
+add_stripflags(){
+    append ASMSTRIPFLAGS "$@"
+}
+
+add_extralibs(){
+    prepend extralibs $($ldflags_filter "$@")
+}
+
+add_host_cppflags(){
+    append host_cppflags "$@"
+}
+
+add_host_cflags(){
+    append host_cflags $($host_cflags_filter "$@")
+}
+
+add_host_ldflags(){
+    append host_ldflags $($host_ldflags_filter "$@")
+}
+
+add_compat(){
+    append compat_objs $1
+    shift
+    map 'add_cppflags -D$v' "$@"
+}
+
+check_cmd(){
+    log "$@"
+    "$@" >> $logfile 2>&1
+}
+
+check_stat(){
+    log check_stat "$@"
+    stat "$1" >> $logfile 2>&1
+}
+
+cc_o(){
+    eval printf '%s\\n' $CC_O
+}
+
+cc_e(){
+    eval printf '%s\\n' $CC_E
+}
+
+check_cc(){
+    log check_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
+}
+
+check_cxx(){
+    log check_cxx "$@"
+    cat > $TMPCPP
+    log_file $TMPCPP
+    check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
+}
+
+check_objcc(){
+    log check_objcc "$@"
+    cat > $TMPM
+    log_file $TMPM
+    check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
+}
+
+check_cpp(){
+    log check_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
+}
+
+as_o(){
+    eval printf '%s\\n' $AS_O
+}
+
+check_as(){
+    log check_as "$@"
+    cat > $TMPS
+    log_file $TMPS
+    check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
+}
+
+check_inline_asm(){
+    log check_inline_asm "$@"
+    name="$1"
+    code="$2"
+    shift 2
+    disable $name
+    check_cc "$@" <<EOF && enable $name
+void foo(void){ __asm__ volatile($code); }
+EOF
+}
+
+check_inline_asm_flags(){
+    log check_inline_asm_flags "$@"
+    name="$1"
+    code="$2"
+    flags=''
+    shift 2
+    while [ "$1" != "" ]; do
+      append flags $1
+      shift
+    done;
+    disable $name
+    cat > $TMPC <<EOF
+void foo(void){ __asm__ volatile($code); }
+EOF
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
+    enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
+}
+
+check_insn(){
+    log check_insn "$@"
+    check_inline_asm ${1}_inline "\"$2\""
+    echo "$2" | check_as && enable ${1}_external || disable ${1}_external
+}
+
+check_yasm(){
+    log check_yasm "$@"
+    echo "$1" > $TMPS
+    log_file $TMPS
+    shift 1
+    check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
+}
+
+ld_o(){
+    eval printf '%s\\n' $LD_O
+}
+
+check_ld(){
+    log check_ld "$@"
+    type=$1
+    shift 1
+    flags=$(filter_out '-l*|*.so' $@)
+    libs=$(filter '-l*|*.so' $@)
+    check_$type $($cflags_filter $flags) || return
+    flags=$($ldflags_filter $flags)
+    libs=$($ldflags_filter $libs)
+    check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
+}
+
+print_include(){
+    hdr=$1
+    test "${hdr%.h}" = "${hdr}" &&
+        echo "#include $hdr"    ||
+        echo "#include <$hdr>"
+}
+
+check_code(){
+    log check_code "$@"
+    check=$1
+    headers=$2
+    code=$3
+    shift 3
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        echo "int main(void) { $code; return 0; }"
+    } | check_$check "$@"
+}
+
+check_cppflags(){
+    log check_cppflags "$@"
+    check_cc "$@" <<EOF && append CPPFLAGS "$@"
+int x;
+EOF
+}
+
+test_cflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cc "$@" <<EOF
+int x;
+EOF
+}
+
+check_cflags(){
+    log check_cflags "$@"
+    test_cflags "$@" && add_cflags "$@"
+}
+
+check_cxxflags(){
+    log check_cxxflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cxx "$@" <<EOF && append CXXFLAGS "$@"
+int x;
+EOF
+}
+
+test_objcflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_objcc "$@" <<EOF
+int x;
+EOF
+}
+
+check_objcflags(){
+    log check_cflags "$@"
+    test_objcflags "$@" && add_objcflags "$@"
+}
+
+test_ldflags(){
+    log test_ldflags "$@"
+    check_ld "cc" "$@" <<EOF
+int main(void){ return 0; }
+EOF
+}
+
+check_ldflags(){
+    log check_ldflags "$@"
+    test_ldflags "$@" && add_ldflags "$@"
+}
+
+test_stripflags(){
+    log test_stripflags "$@"
+    # call check_cc to get a fresh TMPO
+    check_cc <<EOF
+int main(void) { return 0; }
+EOF
+    check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
+}
+
+check_stripflags(){
+    log check_stripflags "$@"
+    test_stripflags "$@" && add_stripflags "$@"
+}
+
+check_header(){
+    log check_header "$@"
+    header=$1
+    shift
+    disable_safe $header
+    check_cpp "$@" <<EOF && enable_safe $header
+#include <$header>
+int x;
+EOF
+}
+
+check_header_objcc(){
+    log check_header_objcc "$@"
+    rm -f -- "$TMPO"
+    header=$1
+    shift
+    disable_safe $header
+    {
+       echo "#include <$header>"
+       echo "int main(void) { return 0; }"
+    } | check_objcc && check_stat "$TMPO" && enable_safe $headers
+}
+
+check_func(){
+    log check_func "$@"
+    func=$1
+    shift
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+extern int $func();
+int main(void){ $func(); }
+EOF
+}
+
+check_complexfunc(){
+    log check_complexfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f * I"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <complex.h>
+#include <math.h>
+float foo(complex float f, complex float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_mathfunc(){
+    log check_mathfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <math.h>
+float foo(float f, float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_func_headers(){
+    log check_func_headers "$@"
+    headers=$1
+    funcs=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        for func in $funcs; do
+            echo "long check_$func(void) { return (long) $func; }"
+        done
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_class_headers_cpp(){
+    log check_class_headers_cpp "$@"
+    headers=$1
+    classes=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            echo "#include <$hdr>"
+        done
+        echo "int main(void) { "
+        i=1
+        for class in $classes; do
+            echo "$class obj$i;"
+            i=$(expr $i + 1)
+        done
+        echo "return 0; }"
+    } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_cpp_condition(){
+    log check_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+check_lib(){
+    log check_lib "$@"
+    header="$1"
+    func="$2"
+    shift 2
+    check_header $header && check_func $func "$@" && add_extralibs "$@"
+}
+
+check_lib2(){
+    log check_lib2 "$@"
+    headers="$1"
+    funcs="$2"
+    shift 2
+    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
+}
+
+check_lib_cpp(){
+    log check_lib_cpp "$@"
+    headers="$1"
+    classes="$2"
+    shift 2
+    check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
+}
+
+check_pkg_config(){
+    log check_pkg_config "$@"
+    pkgandversion="$1"
+    pkg="${1%% *}"
+    headers="$2"
+    funcs="$3"
+    shift 3
+    check_cmd $pkg_config --exists --print-errors $pkgandversion || return
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
+        set_safe "${pkg}_cflags" $pkg_cflags   &&
+        set_safe "${pkg}_libs"   $pkg_libs
+}
+
+check_exec(){
+    check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
+}
+
+check_exec_crash(){
+    code=$(cat)
+
+    # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
+    # are safe but may not be available everywhere.  Thus we use
+    # raise(SIGTERM) instead.  The check is run in a subshell so we
+    # can redirect the "Terminated" message from the shell.  SIGBUS
+    # is not defined by standard C so it is used conditionally.
+
+    (check_exec "$@") >> $logfile 2>&1 <<EOF
+#include <signal.h>
+static void sighandler(int sig){
+    raise(SIGTERM);
+}
+int foo(void){
+    $code
+}
+int (*func_ptr)(void) = foo;
+int main(void){
+    signal(SIGILL, sighandler);
+    signal(SIGFPE, sighandler);
+    signal(SIGSEGV, sighandler);
+#ifdef SIGBUS
+    signal(SIGBUS, sighandler);
+#endif
+    return func_ptr();
+}
+EOF
+}
+
+check_type(){
+    log check_type "$@"
+    headers=$1
+    type=$2
+    shift 2
+    disable_safe "$type"
+    check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
+}
+
+check_struct(){
+    log check_struct "$@"
+    headers=$1
+    struct=$2
+    member=$3
+    shift 3
+    disable_safe "${struct}_${member}"
+    check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
+        enable_safe "${struct}_${member}"
+}
+
+check_builtin(){
+    log check_builtin "$@"
+    name=$1
+    headers=$2
+    builtin=$3
+    shift 3
+    disable "$name"
+    check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
+}
+
+check_compile_assert(){
+    log check_compile_assert "$@"
+    name=$1
+    headers=$2
+    condition=$3
+    shift 3
+    disable "$name"
+    check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
+}
+
+require(){
+    name="$1"
+    header="$2"
+    func="$3"
+    shift 3
+    check_lib $header $func "$@" || die "ERROR: $name not found"
+}
+
+require2(){
+    name="$1"
+    headers="$2"
+    func="$3"
+    shift 3
+    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
+}
+
+require_cpp(){
+    name="$1"
+    headers="$2"
+    classes="$3"
+    shift 3
+    check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
+}
+
+use_pkg_config(){
+    pkg="$1"
+    check_pkg_config "$@" || return 1
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+require_pkg_config(){
+    use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
+}
+
+require_libfreetype(){
+    log require_libfreetype "$@"
+    pkg="freetype2"
+    check_cmd $pkg_config --exists --print-errors $pkg \
+      || die "ERROR: $pkg not found"
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    {
+        echo "#include <ft2build.h>"
+        echo "#include FT_FREETYPE_H"
+        echo "long check_func(void) { return (long) FT_Init_FreeType; }"
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" $pkg_cflags $pkg_libs \
+      && set_safe "${pkg}_cflags" $pkg_cflags \
+      && set_safe "${pkg}_libs"   $pkg_libs \
+      || die "ERROR: $pkg not found"
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+hostcc_e(){
+    eval printf '%s\\n' $HOSTCC_E
+}
+
+hostcc_o(){
+    eval printf '%s\\n' $HOSTCC_O
+}
+
+check_host_cc(){
+    log check_host_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
+}
+
+check_host_cpp(){
+    log check_host_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
+}
+
+check_host_cppflags(){
+    log check_host_cppflags "$@"
+    check_host_cc "$@" <<EOF && append host_cppflags "$@"
+int x;
+EOF
+}
+
+check_host_cflags(){
+    log check_host_cflags "$@"
+    set -- $($host_cflags_filter "$@")
+    check_host_cc "$@" <<EOF && append host_cflags "$@"
+int x;
+EOF
+}
+
+check_host_cpp_condition(){
+    log check_host_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_host_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+cp_if_changed(){
+    cmp -s "$1" "$2" && echo "$2 is unchanged" && return
+    mkdir -p "$(dirname $2)"
+    $cp_f "$1" "$2"
+}
+
+# CONFIG_LIST contains configurable options, while HAVE_LIST is for
+# system-dependent things.
+
+AVCODEC_COMPONENTS="
+    bsfs
+    decoders
+    encoders
+    hwaccels
+    parsers
+"
+
+AVDEVICE_COMPONENTS="
+    indevs
+    outdevs
+"
+AVFILTER_COMPONENTS="
+    filters
+"
+AVFORMAT_COMPONENTS="
+    demuxers
+    muxers
+    protocols
+"
+
+AVRESAMPLE_COMPONENTS=""
+AVUTIL_COMPONENTS=""
+
+COMPONENT_LIST="
+    $AVCODEC_COMPONENTS
+    $AVDEVICE_COMPONENTS
+    $AVFILTER_COMPONENTS
+    $AVFORMAT_COMPONENTS
+    $AVRESAMPLE_COMPONENTS
+    $AVUTIL_COMPONENTS
+"
+
+EXAMPLE_LIST="
+    avio_reading_example
+    avio_dir_cmd_example
+    decoding_encoding_example
+    demuxing_decoding_example
+    extract_mvs_example
+    filter_audio_example
+    filtering_audio_example
+    filtering_video_example
+    metadata_example
+    muxing_example
+    qsvdec_example
+    remuxing_example
+    resampling_audio_example
+    scaling_video_example
+    transcode_aac_example
+    transcoding_example
+"
+
+EXTERNAL_LIBRARY_LIST="
+    avisynth
+    bzlib
+    chromaprint
+    crystalhd
+    decklink
+    frei0r
+    gcrypt
+    gmp
+    gnutls
+    iconv
+    jni
+    ladspa
+    libass
+    libbluray
+    libbs2b
+    libcaca
+    libcdio
+    libcelt
+    libdc1394
+    libebur128
+    libfaac
+    libfdk_aac
+    libflite
+    libfontconfig
+    libfreetype
+    libfribidi
+    libgme
+    libgsm
+    libiec61883
+    libilbc
+    libkvazaar
+    libmodplug
+    libmp3lame
+    libnut
+    libopencore_amrnb
+    libopencore_amrwb
+    libopencv
+    libopenh264
+    libopenjpeg
+    libopus
+    libpulse
+    librtmp
+    librubberband
+    libschroedinger
+    libshine
+    libsmbclient
+    libsnappy
+    libsoxr
+    libspeex
+    libssh
+    libtesseract
+    libtheora
+    libtwolame
+    libv4l2
+    libvidstab
+    libvo_amrwbenc
+    libvorbis
+    libvpx
+    libwavpack
+    libwebp
+    libx264
+    libx265
+    libxavs
+    libxcb
+    libxcb_shm
+    libxcb_shape
+    libxcb_xfixes
+    libxvid
+    libzimg
+    libzmq
+    libzvbi
+    lzma
+    mediacodec
+    netcdf
+    openal
+    opencl
+    opengl
+    openssl
+    schannel
+    sdl
+    securetransport
+    videotoolbox
+    x11grab
+    xlib
+    zlib
+"
+
+HWACCEL_LIBRARY_LIST="
+    audiotoolbox
+    cuda
+    cuvid
+    d3d11va
+    dxva2
+    libmfx
+    libnpp
+    mmal
+    nvenc
+    omx
+    vaapi
+    vda
+    vdpau
+    videotoolbox_hwaccel
+    xvmc
+"
+
+DOCUMENT_LIST="
+    doc
+    htmlpages
+    manpages
+    podpages
+    txtpages
+"
+
+FEATURE_LIST="
+    ftrapv
+    gray
+    hardcoded_tables
+    omx_rpi
+    runtime_cpudetect
+    safe_bitstream_reader
+    shared
+    small
+    static
+    swscale_alpha
+"
+
+LIBRARY_LIST="
+    avcodec
+    avdevice
+    avfilter
+    avformat
+    avresample
+    avutil
+    postproc
+    swresample
+    swscale
+"
+
+LICENSE_LIST="
+    gpl
+    nonfree
+    version3
+"
+
+PROGRAM_LIST="
+    ffplay
+    ffprobe
+    ffserver
+    ffmpeg
+"
+
+SUBSYSTEM_LIST="
+    dct
+    dwt
+    error_resilience
+    faan
+    fast_unaligned
+    fft
+    lsp
+    lzo
+    mdct
+    pixelutils
+    network
+    rdft
+"
+
+CONFIG_LIST="
+    $COMPONENT_LIST
+    $DOCUMENT_LIST
+    $EXAMPLE_LIST
+    $EXTERNAL_LIBRARY_LIST
+    $HWACCEL_LIBRARY_LIST
+    $FEATURE_LIST
+    $LICENSE_LIST
+    $LIBRARY_LIST
+    $PROGRAM_LIST
+    $SUBSYSTEM_LIST
+    fontconfig
+    incompatible_libav_abi
+    memalign_hack
+    memory_poisoning
+    neon_clobber_test
+    pic
+    pod2man
+    raise_major
+    thumb
+    valgrind_backtrace
+    xmm_clobber_test
+"
+
+THREADS_LIST="
+    pthreads
+    os2threads
+    w32threads
+"
+
+ATOMICS_LIST="
+    atomics_gcc
+    atomics_suncc
+    atomics_win32
+"
+
+ARCH_LIST="
+    aarch64
+    alpha
+    arm
+    avr32
+    avr32_ap
+    avr32_uc
+    bfin
+    ia64
+    m68k
+    mips
+    mips64
+    parisc
+    ppc
+    ppc64
+    s390
+    sh4
+    sparc
+    sparc64
+    tilegx
+    tilepro
+    tomi
+    x86
+    x86_32
+    x86_64
+"
+
+ARCH_EXT_LIST_ARM="
+    armv5te
+    armv6
+    armv6t2
+    armv8
+    neon
+    vfp
+    vfpv3
+    setend
+"
+
+ARCH_EXT_LIST_MIPS="
+    mipsfpu
+    mips32r2
+    mips32r5
+    mips64r2
+    mips32r6
+    mips64r6
+    mipsdsp
+    mipsdspr2
+    msa
+"
+
+ARCH_EXT_LIST_LOONGSON="
+    loongson2
+    loongson3
+    mmi
+"
+
+ARCH_EXT_LIST_X86_SIMD="
+    aesni
+    amd3dnow
+    amd3dnowext
+    avx
+    avx2
+    fma3
+    fma4
+    mmx
+    mmxext
+    sse
+    sse2
+    sse3
+    sse4
+    sse42
+    ssse3
+    xop
+"
+
+ARCH_EXT_LIST_PPC="
+    altivec
+    dcbzl
+    ldbrx
+    power8
+    ppc4xx
+    vsx
+"
+
+ARCH_EXT_LIST_X86="
+    $ARCH_EXT_LIST_X86_SIMD
+    cpunop
+    i686
+"
+
+ARCH_EXT_LIST="
+    $ARCH_EXT_LIST_ARM
+    $ARCH_EXT_LIST_PPC
+    $ARCH_EXT_LIST_X86
+    $ARCH_EXT_LIST_MIPS
+    $ARCH_EXT_LIST_LOONGSON
+"
+
+ARCH_FEATURES="
+    aligned_stack
+    fast_64bit
+    fast_clz
+    fast_cmov
+    local_aligned_8
+    local_aligned_16
+    local_aligned_32
+    simd_align_16
+"
+
+BUILTIN_LIST="
+    atomic_cas_ptr
+    atomic_compare_exchange
+    machine_rw_barrier
+    MemoryBarrier
+    mm_empty
+    rdtsc
+    sarestart
+    sem_timedwait
+    sync_val_compare_and_swap
+"
+HAVE_LIST_CMDLINE="
+    inline_asm
+    symver
+    yasm
+"
+
+HAVE_LIST_PUB="
+    bigendian
+    fast_unaligned
+    incompatible_libav_abi
+"
+
+HEADERS_LIST="
+    alsa_asoundlib_h
+    altivec_h
+    arpa_inet_h
+    asm_types_h
+    cdio_paranoia_h
+    cdio_paranoia_paranoia_h
+    dispatch_dispatch_h
+    dev_bktr_ioctl_bt848_h
+    dev_bktr_ioctl_meteor_h
+    dev_ic_bt8xx_h
+    dev_video_bktr_ioctl_bt848_h
+    dev_video_meteor_ioctl_meteor_h
+    direct_h
+    dirent_h
+    dlfcn_h
+    d3d11_h
+    dxva_h
+    ES2_gl_h
+    gsm_h
+    io_h
+    mach_mach_time_h
+    machine_ioctl_bt848_h
+    machine_ioctl_meteor_h
+    malloc_h
+    opencv2_core_core_c_h
+    openjpeg_2_1_openjpeg_h
+    openjpeg_2_0_openjpeg_h
+    openjpeg_1_5_openjpeg_h
+    OpenGL_gl3_h
+    poll_h
+    sndio_h
+    soundcard_h
+    sys_mman_h
+    sys_param_h
+    sys_resource_h
+    sys_select_h
+    sys_soundcard_h
+    sys_time_h
+    sys_un_h
+    sys_videoio_h
+    termios_h
+    udplite_h
+    unistd_h
+    valgrind_valgrind_h
+    windows_h
+    winsock2_h
+"
+
+INTRINSICS_LIST="
+    intrinsics_neon
+"
+
+COMPLEX_FUNCS="
+    cabs
+    cexp
+"
+
+MATH_FUNCS="
+    atanf
+    atan2f
+    cbrt
+    cbrtf
+    copysign
+    cosf
+    erf
+    exp2
+    exp2f
+    expf
+    hypot
+    isfinite
+    isinf
+    isnan
+    ldexpf
+    llrint
+    llrintf
+    log2
+    log2f
+    log10f
+    lrint
+    lrintf
+    powf
+    rint
+    round
+    roundf
+    sinf
+    trunc
+    truncf
+"
+
+SYSTEM_FUNCS="
+    access
+    aligned_malloc
+    arc4random
+    clock_gettime
+    closesocket
+    CommandLineToArgvW
+    CoTaskMemFree
+    CryptGenRandom
+    dlopen
+    fcntl
+    flt_lim
+    fork
+    getaddrinfo
+    gethrtime
+    getopt
+    GetProcessAffinityMask
+    GetProcessMemoryInfo
+    GetProcessTimes
+    getrusage
+    GetSystemTimeAsFileTime
+    gettimeofday
+    glob
+    glXGetProcAddress
+    gmtime_r
+    inet_aton
+    isatty
+    jack_port_get_latency_range
+    kbhit
+    localtime_r
+    lstat
+    lzo1x_999_compress
+    mach_absolute_time
+    MapViewOfFile
+    memalign
+    mkstemp
+    mmap
+    mprotect
+    nanosleep
+    PeekNamedPipe
+    posix_memalign
+    pthread_cancel
+    sched_getaffinity
+    SetConsoleTextAttribute
+    SetConsoleCtrlHandler
+    SetDllDirectory
+    setmode
+    setrlimit
+    Sleep
+    strerror_r
+    sysconf
+    sysctl
+    usleep
+    UTGetOSTypeFromString
+    VirtualAlloc
+    wglGetProcAddress
+"
+
+TOOLCHAIN_FEATURES="
+    as_dn_directive
+    as_func
+    as_object_arch
+    asm_mod_q
+    attribute_may_alias
+    attribute_packed
+    ebp_available
+    ebx_available
+    gnu_as
+    gnu_windres
+    ibm_asm
+    inline_asm_direct_symbol_refs
+    inline_asm_labels
+    inline_asm_nonlocal_labels
+    pragma_deprecated
+    rsync_contimeout
+    symver_asm_label
+    symver_gnu_asm
+    vfp_args
+    xform_asm
+    xmm_clobbers
+"
+
+TYPES_LIST="
+    CONDITION_VARIABLE_Ptr
+    socklen_t
+    struct_addrinfo
+    struct_group_source_req
+    struct_ip_mreq_source
+    struct_ipv6_mreq
+    struct_msghdr_msg_flags
+    struct_pollfd
+    struct_rusage_ru_maxrss
+    struct_sctp_event_subscribe
+    struct_sockaddr_in6
+    struct_sockaddr_sa_len
+    struct_sockaddr_storage
+    struct_stat_st_mtim_tv_nsec
+    struct_v4l2_frmivalenum_discrete
+"
+
+HAVE_LIST="
+    $ARCH_EXT_LIST
+    $(add_suffix _external $ARCH_EXT_LIST)
+    $(add_suffix _inline   $ARCH_EXT_LIST)
+    $ARCH_FEATURES
+    $ATOMICS_LIST
+    $BUILTIN_LIST
+    $COMPLEX_FUNCS
+    $HAVE_LIST_CMDLINE
+    $HAVE_LIST_PUB
+    $HEADERS_LIST
+    $INTRINSICS_LIST
+    $MATH_FUNCS
+    $SYSTEM_FUNCS
+    $THREADS_LIST
+    $TOOLCHAIN_FEATURES
+    $TYPES_LIST
+    atomics_native
+    dos_paths
+    dxva2_lib
+    dxva2api_cobj
+    libc_msvcrt
+    libdc1394_1
+    libdc1394_2
+    makeinfo
+    makeinfo_html
+    MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
+    perl
+    pod2man
+    sdl
+    section_data_rel_ro
+    texi2html
+    threads
+    vaapi_drm
+    vaapi_x11
+    vdpau_x11
+    winrt
+    xlib
+"
+
+# options emitted with CONFIG_ prefix but not available on the command line
+CONFIG_EXTRA="
+    aandcttables
+    ac3dsp
+    audio_frame_queue
+    audiodsp
+    blockdsp
+    bswapdsp
+    cabac
+    dirac_parse
+    dvprofile
+    exif
+    faandct
+    faanidct
+    fdctdsp
+    flacdsp
+    fmtconvert
+    frame_thread_encoder
+    g722dsp
+    golomb
+    gplv3
+    h263dsp
+    h264chroma
+    h264dsp
+    h264pred
+    h264qpel
+    hpeldsp
+    huffman
+    huffyuvdsp
+    huffyuvencdsp
+    idctdsp
+    iirfilter
+    imdct15
+    intrax8
+    iso_media
+    ividsp
+    jpegtables
+    lgplv3
+    libx262
+    llauddsp
+    llviddsp
+    lpc
+    lzf
+    me_cmp
+    mpeg_er
+    mpegaudio
+    mpegaudiodsp
+    mpegvideo
+    mpegvideoenc
+    mss34dsp
+    pixblockdsp
+    qpeldsp
+    qsv
+    qsvdec
+    qsvenc
+    rangecoder
+    riffdec
+    riffenc
+    rtpdec
+    rtpenc_chain
+    rv34dsp
+    sinewin
+    snappy
+    srtp
+    startcode
+    texturedsp
+    texturedspenc
+    tpeldsp
+    vaapi_encode
+    vc1dsp
+    videodsp
+    vp3dsp
+    vp56dsp
+    vp8dsp
+    vt_bt2020
+    wma_freqs
+    wmv2dsp
+"
+
+CMDLINE_SELECT="
+    $ARCH_EXT_LIST
+    $CONFIG_LIST
+    $HAVE_LIST_CMDLINE
+    $THREADS_LIST
+    asm
+    cross_compile
+    debug
+    extra_warnings
+    logging
+    lto
+    optimizations
+    rpath
+    stripping
+"
+
+PATHS_LIST="
+    bindir
+    datadir
+    docdir
+    incdir
+    libdir
+    mandir
+    pkgconfigdir
+    prefix
+    shlibdir
+    install_name_dir
+"
+
+CMDLINE_SET="
+    $PATHS_LIST
+    ar
+    arch
+    as
+    assert_level
+    build_suffix
+    cc
+    objcc
+    cpu
+    cross_prefix
+    custom_allocator
+    cxx
+    dep_cc
+    doxygen
+    env
+    extra_version
+    gas
+    host_cc
+    host_cflags
+    host_ld
+    host_ldflags
+    host_libs
+    host_os
+    install
+    ld
+    ln_s
+    logfile
+    malloc_prefix
+    nm
+    optflags
+    pkg_config
+    pkg_config_flags
+    progs_suffix
+    random_seed
+    ranlib
+    samples
+    strip
+    sws_max_filter_size
+    sysinclude
+    sysroot
+    target_exec
+    target_os
+    target_path
+    target_samples
+    tempprefix
+    toolchain
+    valgrind
+    yasmexe
+"
+
+CMDLINE_APPEND="
+    extra_cflags
+    extra_cxxflags
+    extra_objcflags
+    host_cppflags
+"
+
+# code dependency declarations
+
+# architecture extensions
+
+armv5te_deps="arm"
+armv6_deps="arm"
+armv6t2_deps="arm"
+armv8_deps="aarch64"
+neon_deps_any="aarch64 arm"
+intrinsics_neon_deps="neon"
+vfp_deps_any="aarch64 arm"
+vfpv3_deps="vfp"
+setend_deps="arm"
+
+map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
+
+mipsfpu_deps="mips"
+mipsdsp_deps="mips"
+mipsdspr2_deps="mips"
+mips32r2_deps="mips"
+mips32r5_deps="mips"
+mips32r6_deps="mips"
+mips64r2_deps="mips"
+mips64r6_deps="mips"
+msa_deps="mipsfpu"
+mmi_deps="mips"
+
+altivec_deps="ppc"
+dcbzl_deps="ppc"
+ldbrx_deps="ppc"
+ppc4xx_deps="ppc"
+vsx_deps="altivec"
+power8_deps="vsx"
+
+cpunop_deps="i686"
+x86_64_select="i686"
+x86_64_suggest="fast_cmov"
+
+amd3dnow_deps="mmx"
+amd3dnowext_deps="amd3dnow"
+i686_deps="x86"
+mmx_deps="x86"
+mmxext_deps="mmx"
+sse_deps="mmxext"
+sse2_deps="sse"
+sse3_deps="sse2"
+ssse3_deps="sse3"
+sse4_deps="ssse3"
+sse42_deps="sse4"
+aesni_deps="sse42"
+avx_deps="sse42"
+xop_deps="avx"
+fma3_deps="avx"
+fma4_deps="avx"
+avx2_deps="avx"
+
+mmx_external_deps="yasm"
+mmx_inline_deps="inline_asm"
+mmx_suggest="mmx_external mmx_inline"
+
+for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
+    eval dep=\$${ext}_deps
+    eval ${ext}_external_deps='"${dep}_external"'
+    eval ${ext}_inline_deps='"${dep}_inline"'
+    eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
+done
+
+aligned_stack_if_any="aarch64 ppc x86"
+fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
+fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
+fast_unaligned_if_any="aarch64 ppc x86"
+simd_align_16_if_any="altivec neon sse"
+
+# system capabilities
+symver_if_any="symver_asm_label symver_gnu_asm"
+valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
+
+# threading support
+atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
+atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
+atomics_win32_if="MemoryBarrier"
+atomics_native_if_any="$ATOMICS_LIST"
+w32threads_deps="atomics_native"
+threads_if_any="$THREADS_LIST"
+
+# subsystems
+dct_select="rdft"
+dirac_parse_select="golomb"
+error_resilience_select="me_cmp"
+faandct_deps="faan fdctdsp"
+faanidct_deps="faan idctdsp"
+h264dsp_select="startcode"
+frame_thread_encoder_deps="encoders threads"
+intrax8_select="blockdsp idctdsp"
+mdct_select="fft"
+me_cmp_select="fdctdsp idctdsp pixblockdsp"
+mpeg_er_select="error_resilience"
+mpegaudio_select="mpegaudiodsp"
+mpegaudiodsp_select="dct"
+mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
+mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
+vc1dsp_select="h264chroma qpeldsp startcode"
+rdft_select="fft"
+
+# decoders / encoders
+aac_decoder_select="imdct15 mdct sinewin"
+aac_fixed_decoder_select="mdct sinewin"
+aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
+aac_latm_decoder_select="aac_decoder aac_latm_parser"
+ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
+ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
+ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
+ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
+adpcm_g722_decoder_select="g722dsp"
+adpcm_g722_encoder_select="g722dsp"
+aic_decoder_select="golomb idctdsp"
+alac_encoder_select="lpc"
+als_decoder_select="bswapdsp"
+amrnb_decoder_select="lsp"
+amrwb_decoder_select="lsp"
+amv_decoder_select="sp5x_decoder exif"
+amv_encoder_select="aandcttables jpegtables mpegvideoenc"
+ape_decoder_select="bswapdsp llauddsp"
+apng_decoder_select="zlib"
+apng_encoder_select="huffyuvencdsp zlib"
+asv1_decoder_select="blockdsp bswapdsp idctdsp"
+asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
+asv2_decoder_select="blockdsp bswapdsp idctdsp"
+asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
+atrac1_decoder_select="mdct sinewin"
+atrac3_decoder_select="mdct"
+atrac3p_decoder_select="mdct sinewin"
+avrn_decoder_select="exif jpegtables"
+bink_decoder_select="blockdsp hpeldsp"
+binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
+binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
+cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
+cllc_decoder_select="bswapdsp"
+comfortnoise_encoder_select="lpc"
+cook_decoder_select="audiodsp mdct sinewin"
+cscd_decoder_select="lzo"
+cscd_decoder_suggest="zlib"
+dca_decoder_select="mdct"
+dds_decoder_select="texturedsp"
+dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
+dnxhd_decoder_select="blockdsp idctdsp"
+dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
+dvvideo_decoder_select="dvprofile idctdsp"
+dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
+dxa_decoder_select="zlib"
+dxv_decoder_select="lzf texturedsp"
+eac3_decoder_select="ac3_decoder"
+eac3_encoder_select="ac3_encoder"
+eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
+eatgq_decoder_select="aandcttables"
+eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
+exr_decoder_select="zlib"
+ffv1_decoder_select="golomb rangecoder"
+ffv1_encoder_select="rangecoder"
+ffvhuff_decoder_select="huffyuv_decoder"
+ffvhuff_encoder_select="huffyuv_encoder"
+fic_decoder_select="golomb"
+flac_decoder_select="flacdsp golomb"
+flac_encoder_select="bswapdsp flacdsp golomb lpc"
+flashsv2_decoder_select="zlib"
+flashsv2_encoder_select="zlib"
+flashsv_decoder_select="zlib"
+flashsv_encoder_select="zlib"
+flv_decoder_select="h263_decoder"
+flv_encoder_select="h263_encoder"
+fourxm_decoder_select="blockdsp bswapdsp"
+fraps_decoder_select="bswapdsp huffman"
+g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
+g729_decoder_select="audiodsp"
+h261_decoder_select="mpegvideo"
+h261_encoder_select="aandcttables mpegvideoenc"
+h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
+h263_encoder_select="aandcttables h263dsp mpegvideoenc"
+h263i_decoder_select="h263_decoder"
+h263p_decoder_select="h263_decoder"
+h263p_encoder_select="h263_encoder"
+h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
+h264_decoder_suggest="error_resilience"
+hap_decoder_select="snappy texturedsp"
+hap_encoder_deps="libsnappy"
+hap_encoder_select="texturedspenc"
+hevc_decoder_select="bswapdsp cabac golomb videodsp"
+huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
+huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
+iac_decoder_select="imc_decoder"
+imc_decoder_select="bswapdsp fft mdct sinewin"
+indeo3_decoder_select="hpeldsp"
+indeo4_decoder_select="ividsp"
+indeo5_decoder_select="ividsp"
+interplay_video_decoder_select="hpeldsp"
+jpegls_decoder_select="golomb mjpeg_decoder"
+jpegls_encoder_select="golomb"
+jv_decoder_select="blockdsp"
+lagarith_decoder_select="huffyuvdsp"
+ljpeg_encoder_select="aandcttables idctdsp jpegtables"
+loco_decoder_select="golomb"
+magicyuv_decoder_select="huffyuvdsp"
+mdec_decoder_select="blockdsp idctdsp mpegvideo"
+metasound_decoder_select="lsp mdct sinewin"
+mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
+mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
+mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
+mjpegb_decoder_select="mjpeg_decoder"
+mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
+mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
+mlp_decoder_select="mlp_parser"
+motionpixels_decoder_select="bswapdsp"
+mp1_decoder_select="mpegaudio"
+mp1float_decoder_select="mpegaudio"
+mp2_decoder_select="mpegaudio"
+mp2float_decoder_select="mpegaudio"
+mp3_decoder_select="mpegaudio"
+mp3adu_decoder_select="mpegaudio"
+mp3adufloat_decoder_select="mpegaudio"
+mp3float_decoder_select="mpegaudio"
+mp3on4_decoder_select="mpegaudio"
+mp3on4float_decoder_select="mpegaudio"
+mpc7_decoder_select="bswapdsp mpegaudiodsp"
+mpc8_decoder_select="mpegaudiodsp"
+mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
+mpeg_xvmc_decoder_select="mpeg2video_decoder"
+mpegvideo_decoder_select="mpegvideo"
+mpeg1video_decoder_select="mpegvideo"
+mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg2video_decoder_select="mpegvideo"
+mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg4_decoder_select="h263_decoder mpeg4video_parser"
+mpeg4_encoder_select="h263_encoder"
+msa1_decoder_select="mss34dsp"
+msmpeg4v1_decoder_select="h263_decoder"
+msmpeg4v2_decoder_select="h263_decoder"
+msmpeg4v2_encoder_select="h263_encoder"
+msmpeg4v3_decoder_select="h263_decoder"
+msmpeg4v3_encoder_select="h263_encoder"
+mss2_decoder_select="vc1_decoder mpegvideo"
+mts2_decoder_select="mss34dsp"
+mxpeg_decoder_select="mjpeg_decoder"
+nellymoser_decoder_select="mdct sinewin"
+nellymoser_encoder_select="audio_frame_queue mdct sinewin"
+nuv_decoder_select="idctdsp lzo"
+on2avc_decoder_select="mdct"
+opus_decoder_deps="swresample"
+opus_decoder_select="imdct15"
+png_decoder_select="zlib"
+png_encoder_select="huffyuvencdsp zlib"
+prores_decoder_select="blockdsp idctdsp"
+prores_encoder_select="fdctdsp"
+qcelp_decoder_select="lsp"
+qdm2_decoder_select="mdct rdft mpegaudiodsp"
+ra_144_decoder_select="audiodsp"
+ra_144_encoder_select="audio_frame_queue lpc audiodsp"
+ralf_decoder_select="golomb"
+rawvideo_decoder_select="bswapdsp"
+rscc_decoder_select="zlib"
+rtjpeg_decoder_select="me_cmp"
+rv10_decoder_select="h263_decoder"
+rv10_encoder_select="h263_encoder"
+rv20_decoder_select="h263_decoder"
+rv20_encoder_select="h263_encoder"
+rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+screenpresso_decoder_select="zlib"
+shorten_decoder_select="golomb"
+sipr_decoder_select="lsp"
+snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
+snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
+sonic_decoder_select="golomb rangecoder"
+sonic_encoder_select="golomb rangecoder"
+sonic_ls_encoder_select="golomb rangecoder"
+sp5x_decoder_select="mjpeg_decoder"
+svq1_decoder_select="hpeldsp"
+svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
+svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
+svq3_decoder_suggest="zlib"
+tak_decoder_select="audiodsp"
+tdsc_decoder_select="zlib mjpeg_decoder"
+theora_decoder_select="vp3_decoder"
+thp_decoder_select="mjpeg_decoder"
+tiff_decoder_suggest="zlib lzma"
+tiff_encoder_suggest="zlib"
+truehd_decoder_select="mlp_parser"
+truemotion2_decoder_select="bswapdsp"
+truespeech_decoder_select="bswapdsp"
+tscc_decoder_select="zlib"
+twinvq_decoder_select="mdct lsp sinewin"
+txd_decoder_select="texturedsp"
+utvideo_decoder_select="bswapdsp"
+utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
+vble_decoder_select="huffyuvdsp"
+vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
+vc1_qsv_decoder_deps="libmfx"
+vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
+vc1image_decoder_select="vc1_decoder"
+vorbis_decoder_select="mdct"
+vorbis_encoder_select="mdct"
+vp3_decoder_select="hpeldsp vp3dsp videodsp"
+vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
+vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
+vp6a_decoder_select="vp6_decoder"
+vp6f_decoder_select="vp6_decoder"
+vp7_decoder_select="h264pred videodsp vp8dsp"
+vp8_decoder_select="h264pred videodsp vp8dsp"
+vp9_decoder_select="videodsp vp9_parser"
+webp_decoder_select="vp8_decoder exif"
+wmalossless_decoder_select="llauddsp"
+wmapro_decoder_select="mdct sinewin wma_freqs"
+wmav1_decoder_select="mdct sinewin wma_freqs"
+wmav1_encoder_select="mdct sinewin wma_freqs"
+wmav2_decoder_select="mdct sinewin wma_freqs"
+wmav2_encoder_select="mdct sinewin wma_freqs"
+wmavoice_decoder_select="lsp rdft dct mdct sinewin"
+wmv1_decoder_select="h263_decoder"
+wmv1_encoder_select="h263_encoder"
+wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
+wmv2_encoder_select="h263_encoder wmv2dsp"
+wmv3_decoder_select="vc1_decoder"
+wmv3image_decoder_select="wmv3_decoder"
+xma1_decoder_select="wmapro_decoder"
+xma2_decoder_select="wmapro_decoder"
+zerocodec_decoder_select="zlib"
+zlib_decoder_select="zlib"
+zlib_encoder_select="zlib"
+zmbv_decoder_select="zlib"
+zmbv_encoder_select="zlib"
+
+# platform codecs
+audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
+audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
+
+# hardware accelerators
+crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
+cuvid_deps="cuda"
+d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
+dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
+vaapi_deps="va_va_h"
+vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
+vda_framework_extralibs="-framework VideoDecodeAcceleration"
+vda_deps="vda_framework pthreads"
+vda_extralibs="-framework CoreFoundation -framework QuartzCore"
+vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
+videotoolbox_hwaccel_deps="videotoolbox pthreads"
+videotoolbox_hwaccel_extralibs="-framework QuartzCore"
+xvmc_deps="X11_extensions_XvMClib_h"
+
+h263_vaapi_hwaccel_deps="vaapi"
+h263_vaapi_hwaccel_select="h263_decoder"
+h263_videotoolbox_hwaccel_deps="videotoolbox"
+h263_videotoolbox_hwaccel_select="h263_decoder"
+h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
+h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_d3d11va_hwaccel_deps="d3d11va"
+h264_d3d11va_hwaccel_select="h264_decoder"
+h264_dxva2_hwaccel_deps="dxva2"
+h264_dxva2_hwaccel_select="h264_decoder"
+h264_mediacodec_decoder_deps="mediacodec"
+h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
+h264_mmal_decoder_deps="mmal"
+h264_mmal_decoder_select="mmal"
+h264_mmal_hwaccel_deps="mmal"
+h264_omx_encoder_deps="omx"
+h264_qsv_hwaccel_deps="libmfx"
+h264_vaapi_hwaccel_deps="vaapi"
+h264_vaapi_hwaccel_select="h264_decoder"
+h264_vda_decoder_deps="vda"
+h264_vda_decoder_select="h264_decoder"
+h264_vda_hwaccel_deps="vda"
+h264_vda_hwaccel_select="h264_decoder"
+h264_vda_old_hwaccel_deps="vda"
+h264_vda_old_hwaccel_select="h264_decoder"
+h264_vdpau_decoder_deps="vdpau"
+h264_vdpau_decoder_select="h264_decoder"
+h264_vdpau_hwaccel_deps="vdpau"
+h264_vdpau_hwaccel_select="h264_decoder"
+h264_videotoolbox_hwaccel_deps="videotoolbox"
+h264_videotoolbox_hwaccel_select="h264_decoder"
+hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
+hevc_d3d11va_hwaccel_select="hevc_decoder"
+hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
+hevc_dxva2_hwaccel_select="hevc_decoder"
+hevc_qsv_hwaccel_deps="libmfx"
+hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
+hevc_vaapi_hwaccel_select="hevc_decoder"
+hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
+hevc_vdpau_hwaccel_select="hevc_decoder"
+mpeg_vdpau_decoder_deps="vdpau"
+mpeg_vdpau_decoder_select="mpeg2video_decoder"
+mpeg_xvmc_hwaccel_deps="xvmc"
+mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg1_vdpau_decoder_deps="vdpau"
+mpeg1_vdpau_decoder_select="mpeg1video_decoder"
+mpeg1_vdpau_hwaccel_deps="vdpau"
+mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
+mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
+mpeg1_xvmc_hwaccel_deps="xvmc"
+mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
+mpeg2_crystalhd_decoder_select="crystalhd"
+mpeg2_d3d11va_hwaccel_deps="d3d11va"
+mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
+mpeg2_dxva2_hwaccel_deps="dxva2"
+mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
+mpeg2_mmal_decoder_deps="mmal"
+mpeg2_mmal_decoder_select="mmal"
+mpeg2_mmal_hwaccel_deps="mmal"
+mpeg2_qsv_hwaccel_deps="libmfx"
+mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
+mpeg2_vaapi_hwaccel_deps="vaapi"
+mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
+mpeg2_vdpau_hwaccel_deps="vdpau"
+mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
+mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
+mpeg2_xvmc_hwaccel_deps="xvmc"
+mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg4_crystalhd_decoder_select="crystalhd"
+mpeg4_mmal_decoder_deps="mmal"
+mpeg4_mmal_decoder_select="mmal"
+mpeg4_mmal_hwaccel_deps="mmal"
+mpeg4_omx_encoder_deps="omx"
+mpeg4_vaapi_hwaccel_deps="vaapi"
+mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
+mpeg4_vdpau_decoder_deps="vdpau"
+mpeg4_vdpau_decoder_select="mpeg4_decoder"
+mpeg4_vdpau_hwaccel_deps="vdpau"
+mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
+mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
+msmpeg4_crystalhd_decoder_select="crystalhd"
+vc1_crystalhd_decoder_select="crystalhd"
+vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_d3d11va_hwaccel_deps="d3d11va"
+vc1_d3d11va_hwaccel_select="vc1_decoder"
+vc1_dxva2_hwaccel_deps="dxva2"
+vc1_dxva2_hwaccel_select="vc1_decoder"
+vc1_mmal_decoder_deps="mmal"
+vc1_mmal_decoder_select="mmal"
+vc1_mmal_hwaccel_deps="mmal"
+vc1_qsv_hwaccel_deps="libmfx"
+vc1_qsv_hwaccel_select="qsvdec_vc1"
+vc1_vaapi_hwaccel_deps="vaapi"
+vc1_vaapi_hwaccel_select="vc1_decoder"
+vc1_vdpau_decoder_deps="vdpau"
+vc1_vdpau_decoder_select="vc1_decoder"
+vc1_vdpau_hwaccel_deps="vdpau"
+vc1_vdpau_hwaccel_select="vc1_decoder"
+vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
+vp9_d3d11va_hwaccel_select="vp9_decoder"
+vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
+vp9_dxva2_hwaccel_select="vp9_decoder"
+vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
+vp9_vaapi_hwaccel_select="vp9_decoder"
+wmv3_crystalhd_decoder_select="crystalhd"
+wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
+wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
+wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
+wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
+wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
+
+# hardware-accelerated codecs
+omx_deps="dlopen pthreads"
+omx_extralibs='$ldl'
+qsvdec_select="qsv"
+qsvenc_select="qsv"
+vaapi_encode_deps="vaapi"
+
+hwupload_cuda_filter_deps="cuda"
+scale_npp_filter_deps="cuda libnpp"
+
+nvenc_encoder_deps="nvenc"
+h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
+h264_nvenc_encoder_deps="nvenc"
+h264_qsv_decoder_deps="libmfx"
+h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
+h264_qsv_encoder_deps="libmfx"
+h264_qsv_encoder_select="qsvenc"
+h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
+h264_vaapi_encoder_select="vaapi_encode golomb"
+
+hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
+hevc_nvenc_encoder_deps="nvenc"
+hevc_qsv_decoder_deps="libmfx"
+hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
+hevc_qsv_encoder_deps="libmfx"
+hevc_qsv_encoder_select="qsvenc"
+hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
+hevc_vaapi_encoder_select="vaapi_encode golomb"
+mpeg2_qsv_decoder_deps="libmfx"
+mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
+mpeg2_qsv_encoder_deps="libmfx"
+mpeg2_qsv_encoder_select="qsvenc"
+nvenc_h264_encoder_deps="nvenc"
+nvenc_hevc_encoder_deps="nvenc"
+
+vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
+vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
+vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
+
+# parsers
+h264_parser_select="golomb h264dsp"
+hevc_parser_select="golomb"
+mpegvideo_parser_select="mpegvideo"
+mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
+vc1_parser_select="vc1dsp"
+
+# bitstream_filters
+mjpeg2jpeg_bsf_select="jpegtables"
+
+# external libraries
+aac_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_select="ac3_parser"
+adpcm_ima_qt_at_decoder_deps="audiotoolbox"
+alac_at_decoder_deps="audiotoolbox"
+amr_nb_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_select="ac3_parser"
+gsm_ms_at_decoder_deps="audiotoolbox"
+ilbc_at_decoder_deps="audiotoolbox"
+mp1_at_decoder_deps="audiotoolbox"
+mp2_at_decoder_deps="audiotoolbox"
+mp3_at_decoder_deps="audiotoolbox"
+pcm_alaw_at_decoder_deps="audiotoolbox"
+pcm_mulaw_at_decoder_deps="audiotoolbox"
+qdmc_at_decoder_deps="audiotoolbox"
+qdm2_at_decoder_deps="audiotoolbox"
+aac_at_encoder_deps="audiotoolbox"
+aac_at_encoder_select="audio_frame_queue"
+alac_at_encoder_deps="audiotoolbox"
+alac_at_encoder_select="audio_frame_queue"
+ilbc_at_encoder_deps="audiotoolbox"
+ilbc_at_encoder_select="audio_frame_queue"
+pcm_alaw_at_encoder_deps="audiotoolbox"
+pcm_alaw_at_encoder_select="audio_frame_queue"
+pcm_mulaw_at_encoder_deps="audiotoolbox"
+pcm_mulaw_at_encoder_select="audio_frame_queue"
+chromaprint_muxer_deps="chromaprint"
+h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
+libcelt_decoder_deps="libcelt"
+libfaac_encoder_deps="libfaac"
+libfaac_encoder_select="audio_frame_queue"
+libfdk_aac_decoder_deps="libfdk_aac"
+libfdk_aac_encoder_deps="libfdk_aac"
+libfdk_aac_encoder_select="audio_frame_queue"
+libgme_demuxer_deps="libgme"
+libgsm_decoder_deps="libgsm"
+libgsm_encoder_deps="libgsm"
+libgsm_ms_decoder_deps="libgsm"
+libgsm_ms_encoder_deps="libgsm"
+libilbc_decoder_deps="libilbc"
+libilbc_encoder_deps="libilbc"
+libkvazaar_encoder_deps="libkvazaar"
+libmodplug_demuxer_deps="libmodplug"
+libmp3lame_encoder_deps="libmp3lame"
+libmp3lame_encoder_select="audio_frame_queue"
+libopencore_amrnb_decoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_select="audio_frame_queue"
+libopencore_amrwb_decoder_deps="libopencore_amrwb"
+libopenh264_encoder_deps="libopenh264"
+libopenjpeg_decoder_deps="libopenjpeg"
+libopenjpeg_encoder_deps="libopenjpeg"
+libopus_decoder_deps="libopus"
+libopus_encoder_deps="libopus"
+libopus_encoder_select="audio_frame_queue"
+libschroedinger_decoder_deps="libschroedinger"
+libschroedinger_encoder_deps="libschroedinger"
+libshine_encoder_deps="libshine"
+libshine_encoder_select="audio_frame_queue"
+libspeex_decoder_deps="libspeex"
+libspeex_encoder_deps="libspeex"
+libspeex_encoder_select="audio_frame_queue"
+libtheora_encoder_deps="libtheora"
+libtwolame_encoder_deps="libtwolame"
+libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
+libvorbis_decoder_deps="libvorbis"
+libvorbis_encoder_deps="libvorbis"
+libvorbis_encoder_select="audio_frame_queue"
+libvpx_vp8_decoder_deps="libvpx"
+libvpx_vp8_encoder_deps="libvpx"
+libvpx_vp9_decoder_deps="libvpx"
+libvpx_vp9_encoder_deps="libvpx"
+libwavpack_encoder_deps="libwavpack"
+libwebp_encoder_deps="libwebp"
+libwebp_anim_encoder_deps="libwebp"
+libx262_encoder_deps="libx262"
+libx264_encoder_deps="libx264"
+libx264rgb_encoder_deps="libx264 x264_csp_bgr"
+libx264rgb_encoder_select="libx264_encoder"
+libx265_encoder_deps="libx265"
+libxavs_encoder_deps="libxavs"
+libxvid_encoder_deps="libxvid"
+libzvbi_teletext_decoder_deps="libzvbi"
+videotoolbox_deps="VideoToolbox_VideoToolbox_h"
+videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
+videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
+videotoolbox_encoder_suggest="vda_framework vt_bt2020"
+vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
+
+# demuxers / muxers
+ac3_demuxer_select="ac3_parser"
+asf_demuxer_select="riffdec"
+asf_o_demuxer_select="riffdec"
+asf_muxer_select="riffenc"
+asf_stream_muxer_select="asf_muxer"
+avi_demuxer_select="iso_media riffdec exif"
+avi_muxer_select="riffenc"
+avisynth_demuxer_deps="avisynth"
+avisynth_demuxer_select="riffdec"
+caf_demuxer_select="iso_media riffdec"
+dash_muxer_select="mp4_muxer"
+dirac_demuxer_select="dirac_parser"
+dts_demuxer_select="dca_parser"
+dtshd_demuxer_select="dca_parser"
+dv_demuxer_select="dvprofile"
+dv_muxer_select="dvprofile"
+dxa_demuxer_select="riffdec"
+eac3_demuxer_select="ac3_parser"
+f4v_muxer_select="mov_muxer"
+flac_demuxer_select="flac_parser"
+hds_muxer_select="flv_muxer"
+hls_muxer_select="mpegts_muxer"
+image2_alias_pix_demuxer_select="image2_demuxer"
+image2_brender_pix_demuxer_select="image2_demuxer"
+ipod_muxer_select="mov_muxer"
+ismv_muxer_select="mov_muxer"
+libnut_demuxer_deps="libnut"
+libnut_muxer_deps="libnut"
+matroska_audio_muxer_select="matroska_muxer"
+matroska_demuxer_select="iso_media riffdec"
+matroska_demuxer_suggest="bzlib lzo zlib"
+matroska_muxer_select="iso_media riffenc"
+mmf_muxer_select="riffenc"
+mov_demuxer_select="iso_media riffdec"
+mov_demuxer_suggest="zlib"
+mov_muxer_select="iso_media riffenc rtpenc_chain"
+mp3_demuxer_select="mpegaudio_parser"
+mp4_muxer_select="mov_muxer"
+mpegts_demuxer_select="iso_media"
+mpegts_muxer_select="adts_muxer latm_muxer"
+mpegtsraw_demuxer_select="mpegts_demuxer"
+mxf_d10_muxer_select="mxf_muxer"
+mxf_opatom_muxer_select="mxf_muxer"
+nut_muxer_select="riffenc"
+nuv_demuxer_select="riffdec"
+oga_muxer_select="ogg_muxer"
+ogg_demuxer_select="dirac_parse"
+opus_muxer_select="ogg_muxer"
+psp_muxer_select="mov_muxer"
+rtp_demuxer_select="sdp_demuxer"
+rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
+rtsp_demuxer_select="http_protocol rtpdec"
+rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
+sap_demuxer_select="sdp_demuxer"
+sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
+sdp_demuxer_select="rtpdec"
+smoothstreaming_muxer_select="ismv_muxer"
+spdif_muxer_select="aac_parser"
+spx_muxer_select="ogg_muxer"
+swf_demuxer_suggest="zlib"
+tak_demuxer_select="tak_parser"
+tg2_muxer_select="mov_muxer"
+tgp_muxer_select="mov_muxer"
+vobsub_demuxer_select="mpegps_demuxer"
+w64_demuxer_select="wav_demuxer"
+w64_muxer_select="wav_muxer"
+wav_demuxer_select="riffdec"
+wav_muxer_select="riffenc"
+webm_muxer_select="iso_media riffenc"
+webm_dash_manifest_demuxer_select="matroska_demuxer"
+wtv_demuxer_select="mpegts_demuxer riffdec"
+wtv_muxer_select="mpegts_muxer riffenc"
+xmv_demuxer_select="riffdec"
+xwma_demuxer_select="riffdec"
+
+# indevs / outdevs
+alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
+alsa_outdev_deps="alsa_asoundlib_h"
+avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
+avfoundation_indev_select="avfoundation"
+bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
+caca_outdev_deps="libcaca"
+decklink_indev_deps="decklink pthreads"
+decklink_indev_extralibs="-lstdc++"
+decklink_outdev_deps="decklink pthreads"
+decklink_outdev_extralibs="-lstdc++"
+dshow_indev_deps="IBaseFilter"
+dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
+dv1394_indev_deps="dv1394"
+dv1394_indev_select="dv_demuxer"
+fbdev_indev_deps="linux_fb_h"
+fbdev_outdev_deps="linux_fb_h"
+gdigrab_indev_deps="CreateDIBSection"
+gdigrab_indev_extralibs="-lgdi32"
+gdigrab_indev_select="bmp_decoder"
+iec61883_indev_deps="libiec61883"
+jack_indev_deps="jack_jack_h"
+jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
+lavfi_indev_deps="avfilter"
+libcdio_indev_deps="libcdio"
+libdc1394_indev_deps="libdc1394"
+libv4l2_indev_deps="libv4l2"
+openal_indev_deps="openal"
+opengl_outdev_deps="opengl"
+oss_indev_deps_any="soundcard_h sys_soundcard_h"
+oss_outdev_deps_any="soundcard_h sys_soundcard_h"
+pulse_indev_deps="libpulse"
+pulse_outdev_deps="libpulse"
+qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
+qtkit_indev_select="qtkit"
+sdl_outdev_deps="sdl"
+sndio_indev_deps="sndio_h"
+sndio_outdev_deps="sndio_h"
+v4l_indev_deps="linux_videodev_h"
+v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
+v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
+vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
+vfwcap_indev_extralibs="-lavicap32"
+x11grab_indev_deps="x11grab"
+x11grab_xcb_indev_deps="libxcb"
+xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
+xv_outdev_extralibs="-lXv -lX11 -lXext"
+
+# protocols
+async_protocol_deps="threads"
+bluray_protocol_deps="libbluray"
+ffrtmpcrypt_protocol_deps="!librtmp_protocol"
+ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
+ffrtmpcrypt_protocol_select="tcp_protocol"
+ffrtmphttp_protocol_deps="!librtmp_protocol"
+ffrtmphttp_protocol_select="http_protocol"
+ftp_protocol_select="tcp_protocol"
+gopher_protocol_select="network"
+http_protocol_select="tcp_protocol"
+httpproxy_protocol_select="tcp_protocol"
+https_protocol_select="tls_protocol"
+icecast_protocol_select="http_protocol"
+librtmp_protocol_deps="librtmp"
+librtmpe_protocol_deps="librtmp"
+librtmps_protocol_deps="librtmp"
+librtmpt_protocol_deps="librtmp"
+librtmpte_protocol_deps="librtmp"
+libsmbclient_protocol_deps="libsmbclient gplv3"
+libssh_protocol_deps="libssh"
+mmsh_protocol_select="http_protocol"
+mmst_protocol_select="network"
+rtmp_protocol_deps="!librtmp_protocol"
+rtmp_protocol_select="tcp_protocol"
+rtmpe_protocol_select="ffrtmpcrypt_protocol"
+rtmps_protocol_deps="!librtmp_protocol"
+rtmps_protocol_select="tls_protocol"
+rtmpt_protocol_select="ffrtmphttp_protocol"
+rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
+rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
+rtp_protocol_select="udp_protocol"
+sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
+sctp_protocol_select="network"
+srtp_protocol_select="rtp_protocol srtp"
+tcp_protocol_select="network"
+tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
+tls_gnutls_protocol_select="tcp_protocol"
+tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
+tls_openssl_protocol_select="tcp_protocol"
+tls_schannel_protocol_deps="schannel"
+tls_schannel_protocol_select="tcp_protocol"
+tls_securetransport_protocol_deps="securetransport"
+tls_securetransport_protocol_select="tcp_protocol"
+tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
+udp_protocol_select="network"
+udplite_protocol_select="network"
+unix_protocol_deps="sys_un_h"
+unix_protocol_select="network"
+
+# filters
+afftfilt_filter_deps="avcodec"
+afftfilt_filter_select="fft"
+amovie_filter_deps="avcodec avformat"
+aresample_filter_deps="swresample"
+ass_filter_deps="libass"
+asyncts_filter_deps="avresample"
+atempo_filter_deps="avcodec"
+atempo_filter_select="rdft"
+azmq_filter_deps="libzmq"
+blackframe_filter_deps="gpl"
+boxblur_filter_deps="gpl"
+bs2b_filter_deps="libbs2b"
+colormatrix_filter_deps="gpl"
+cover_rect_filter_deps="avcodec avformat gpl"
+cropdetect_filter_deps="gpl"
+delogo_filter_deps="gpl"
+deshake_filter_select="pixelutils"
+drawtext_filter_deps="libfreetype"
+ebur128_filter_deps="gpl"
+eq_filter_deps="gpl"
+fftfilt_filter_deps="avcodec"
+fftfilt_filter_select="rdft"
+find_rect_filter_deps="avcodec avformat gpl"
+firequalizer_filter_deps="avcodec"
+firequalizer_filter_select="rdft"
+flite_filter_deps="libflite"
+framerate_filter_select="pixelutils"
+frei0r_filter_deps="frei0r dlopen"
+frei0r_src_filter_deps="frei0r dlopen"
+fspp_filter_deps="gpl"
+geq_filter_deps="gpl"
+histeq_filter_deps="gpl"
+hqdn3d_filter_deps="gpl"
+interlace_filter_deps="gpl"
+kerndeint_filter_deps="gpl"
+ladspa_filter_deps="ladspa dlopen"
+loudnorm_filter_deps="libebur128"
+mcdeint_filter_deps="avcodec gpl"
+movie_filter_deps="avcodec avformat"
+mpdecimate_filter_deps="gpl"
+mpdecimate_filter_select="pixelutils"
+mptestsrc_filter_deps="gpl"
+negate_filter_deps="lut_filter"
+nnedi_filter_deps="gpl"
+ocr_filter_deps="libtesseract"
+ocv_filter_deps="libopencv"
+owdenoise_filter_deps="gpl"
+pan_filter_deps="swresample"
+perspective_filter_deps="gpl"
+phase_filter_deps="gpl"
+pp7_filter_deps="gpl"
+pp_filter_deps="gpl postproc"
+pullup_filter_deps="gpl"
+removelogo_filter_deps="avcodec avformat swscale"
+repeatfields_filter_deps="gpl"
+resample_filter_deps="avresample"
+rubberband_filter_deps="librubberband"
+sab_filter_deps="gpl swscale"
+scale2ref_filter_deps="swscale"
+scale_filter_deps="swscale"
+select_filter_select="pixelutils"
+showcqt_filter_deps="avcodec avformat swscale"
+showcqt_filter_select="fft"
+showfreqs_filter_deps="avcodec"
+showfreqs_filter_select="fft"
+showspectrum_filter_deps="avcodec"
+showspectrum_filter_select="fft"
+showspectrumpic_filter_deps="avcodec"
+showspectrumpic_filter_select="fft"
+smartblur_filter_deps="gpl swscale"
+sofalizer_filter_deps="netcdf avcodec"
+sofalizer_filter_select="fft"
+spectrumsynth_filter_deps="avcodec"
+spectrumsynth_filter_select="fft"
+spp_filter_deps="gpl avcodec"
+spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
+stereo3d_filter_deps="gpl"
+subtitles_filter_deps="avformat avcodec libass"
+super2xsai_filter_deps="gpl"
+pixfmts_super2xsai_test_deps="super2xsai_filter"
+tinterlace_filter_deps="gpl"
+tinterlace_merge_test_deps="tinterlace_filter"
+tinterlace_pad_test_deps="tinterlace_filter"
+uspp_filter_deps="gpl avcodec"
+vidstabdetect_filter_deps="libvidstab"
+vidstabtransform_filter_deps="libvidstab"
+zmq_filter_deps="libzmq"
+zoompan_filter_deps="swscale"
+zscale_filter_deps="libzimg"
+scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
+
+# examples
+avcodec_example_deps="avcodec avutil"
+avio_dir_cmd="avformat avutil"
+avio_reading="avformat avcodec avutil"
+decoding_encoding_example_deps="avcodec avformat avutil"
+demuxing_decoding_example_deps="avcodec avformat avutil"
+extract_mvs_example_deps="avcodec avformat avutil"
+filter_audio_example_deps="avfilter avutil"
+filtering_audio_example_deps="avfilter avcodec avformat avutil"
+filtering_video_example_deps="avfilter avcodec avformat avutil"
+metadata_example_deps="avformat avutil"
+muxing_example_deps="avcodec avformat avutil swscale"
+qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
+remuxing_example_deps="avcodec avformat avutil"
+resampling_audio_example_deps="avutil swresample"
+scaling_video_example_deps="avutil swscale"
+transcode_aac_example_deps="avcodec avformat swresample"
+transcoding_example_deps="avfilter avcodec avformat avutil"
+
+# libraries, in linking order
+avcodec_deps="avutil"
+avdevice_deps="avformat avcodec avutil"
+avfilter_deps="avutil"
+avformat_deps="avcodec avutil"
+avresample_deps="avutil"
+postproc_deps="avutil gpl"
+swresample_deps="avutil"
+swscale_deps="avutil"
+
+# programs
+ffmpeg_deps="avcodec avfilter avformat swresample"
+ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
+               null_filter
+               setpts_filter trim_filter"
+ffplay_deps="avcodec avformat swscale swresample sdl"
+ffplay_libs='$sdl_libs'
+ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
+ffprobe_deps="avcodec avformat"
+ffserver_deps="avformat fork sarestart"
+ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
+
+# documentation
+podpages_deps="perl"
+manpages_deps="perl pod2man"
+htmlpages_deps="perl"
+htmlpages_deps_any="makeinfo_html texi2html"
+txtpages_deps="perl makeinfo"
+doc_deps_any="manpages htmlpages podpages txtpages"
+
+# default parameters
+
+logfile="config.log"
+
+# installation paths
+prefix_default="/usr/local"
+bindir_default='${prefix}/bin'
+datadir_default='${prefix}/share/ffmpeg'
+docdir_default='${prefix}/share/doc/ffmpeg'
+incdir_default='${prefix}/include'
+libdir_default='${prefix}/lib'
+mandir_default='${prefix}/share/man'
+
+# toolchain
+ar_default="ar"
+cc_default="gcc"
+cxx_default="g++"
+host_cc_default="gcc"
+cp_f="cp -f"
+doxygen_default="doxygen"
+install="install"
+ln_s_default="ln -s -f"
+nm_default="nm -g"
+objformat="elf"
+pkg_config_default=pkg-config
+ranlib_default="ranlib"
+strip_default="strip"
+yasmexe_default="yasm"
+windres_default="windres"
+
+# OS
+target_os_default=$(tolower $(uname -s))
+host_os=$target_os_default
+
+# machine
+if test "$target_os_default" = aix; then
+    arch_default=$(uname -p)
+    strip_default="strip -X32_64"
+else
+    arch_default=$(uname -m)
+fi
+cpu="generic"
+intrinsics="none"
+
+# configurable options
+enable $PROGRAM_LIST
+enable $DOCUMENT_LIST
+enable $EXAMPLE_LIST
+enable $(filter_out avresample $LIBRARY_LIST)
+enable stripping
+
+enable asm
+enable debug
+enable doc
+enable faan faandct faanidct
+enable optimizations
+enable runtime_cpudetect
+enable safe_bitstream_reader
+enable static
+enable swscale_alpha
+enable valgrind_backtrace
+
+sws_max_filter_size_default=256
+set_default sws_max_filter_size
+
+# Enable platform codecs by default.
+enable audiotoolbox
+
+# Enable hwaccels by default.
+enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
+enable xlib
+
+enable vda_framework videotoolbox videotoolbox_encoder
+
+# build settings
+SHFLAGS='-shared -Wl,-soname,$$(@F)'
+LIBPREF="lib"
+LIBSUF=".a"
+FULLNAME='$(NAME)$(BUILDSUF)'
+LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
+SLIBPREF="lib"
+SLIBSUF=".so"
+SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
+SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
+SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
+LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
+SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
+SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
+
+asflags_filter=echo
+cflags_filter=echo
+ldflags_filter=echo
+
+AS_C='-c'
+AS_O='-o $@'
+CC_C='-c'
+CC_E='-E -o $@'
+CC_O='-o $@'
+CXX_C='-c'
+CXX_O='-o $@'
+OBJCC_C='-c'
+OBJCC_E='-E -o $@'
+OBJCC_O='-o $@'
+LD_O='-o $@'
+LD_LIB='-l%'
+LD_PATH='-L'
+HOSTCC_C='-c'
+HOSTCC_E='-E -o $@'
+HOSTCC_O='-o $@'
+HOSTLD_O='-o $@'
+
+host_libs='-lm'
+host_cflags_filter=echo
+host_ldflags_filter=echo
+
+target_path='$(CURDIR)'
+
+# since the object filename is not given with the -MM flag, the compiler
+# is only able to print the basename, and we must add the path ourselves
+DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
+DEPFLAGS='-MM'
+
+# find source path
+if test -f configure; then
+    source_path=.
+else
+    source_path=$(cd $(dirname "$0"); pwd)
+    case "$source_path" in
+        *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
+    esac
+    test -e "$source_path/config.h" &&
+        die "Out of tree builds are impossible with config.h in source dir."
+fi
+
+for v in "$@"; do
+    r=${v#*=}
+    l=${v%"$r"}
+    r=$(sh_quote "$r")
+    FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
+done
+
+find_things(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
+}
+
+ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
+DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
+HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
+PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
+MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
+DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
+OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
+INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
+FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
+
+find_things_extern(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
+}
+
+BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
+PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
+
+ALL_COMPONENTS="
+    $BSF_LIST
+    $DECODER_LIST
+    $DEMUXER_LIST
+    $ENCODER_LIST
+    $FILTER_LIST
+    $HWACCEL_LIST
+    $INDEV_LIST
+    $MUXER_LIST
+    $OUTDEV_LIST
+    $PARSER_LIST
+    $PROTOCOL_LIST
+"
+
+for n in $COMPONENT_LIST; do
+    v=$(toupper ${n%s})_LIST
+    eval enable \$$v
+    eval ${n}_if_any="\$$v"
+done
+
+enable $ARCH_EXT_LIST
+
+die_unknown(){
+    echo "Unknown option \"$1\"."
+    echo "See $0 --help for available options."
+    exit 1
+}
+
+print_in_columns() {
+    cols=$(expr $ncols / 24)
+    cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
+}
+
+show_list() {
+    suffix=_$1
+    shift
+    echo $* | sed s/$suffix//g | print_in_columns
+    exit 0
+}
+
+rand_list(){
+    IFS=', '
+    set -- $*
+    unset IFS
+    for thing; do
+        comp=${thing%:*}
+        prob=${thing#$comp}
+        prob=${prob#:}
+        is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
+        echo "prob ${prob:-0.5}"
+        printf '%s\n' $comp
+    done
+}
+
+do_random(){
+    action=$1
+    shift
+    random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
+    $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
+}
+
+for opt do
+    optval="${opt#*=}"
+    case "$opt" in
+        --extra-ldflags=*)
+            add_ldflags $optval
+        ;;
+        --extra-ldexeflags=*)
+            add_ldexeflags $optval
+        ;;
+        --extra-ldlibflags=*)
+            add_ldlibflags $optval
+        ;;
+        --extra-libs=*)
+            add_extralibs $optval
+        ;;
+        --disable-devices)
+            disable $INDEV_LIST $OUTDEV_LIST
+        ;;
+        --enable-debug=*)
+            debuglevel="$optval"
+        ;;
+        --disable-programs)
+            disable $PROGRAM_LIST
+        ;;
+        --disable-everything)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+        ;;
+        --disable-all)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+            disable $LIBRARY_LIST $PROGRAM_LIST doc
+            enable avutil
+        ;;
+        --enable-random|--disable-random)
+            action=${opt%%-random}
+            do_random ${action#--} $COMPONENT_LIST
+        ;;
+        --enable-random=*|--disable-random=*)
+            action=${opt%%-random=*}
+            do_random ${action#--} $optval
+        ;;
+        --enable-*=*|--disable-*=*)
+            eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
+            is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
+            eval list=\$$(toupper $thing)_LIST
+            name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
+            list=$(filter "$name" $list)
+            [ "$list" = "" ] && warn "Option $opt did not match anything"
+            $action $list
+        ;;
+        --enable-?*|--disable-?*)
+            eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
+            if is_in $option $COMPONENT_LIST; then
+                test $action = disable && action=unset
+                eval $action \$$(toupper ${option%s})_LIST
+            elif is_in $option $CMDLINE_SELECT; then
+                $action $option
+            else
+                die_unknown $opt
+            fi
+        ;;
+        --list-*)
+            NAME="${opt#--list-}"
+            is_in $NAME $COMPONENT_LIST || die_unknown $opt
+            NAME=${NAME%s}
+            eval show_list $NAME \$$(toupper $NAME)_LIST
+        ;;
+        --help|-h) show_help
+        ;;
+        --fatal-warnings) enable fatal_warnings
+        ;;
+        *)
+            optname="${opt%%=*}"
+            optname="${optname#--}"
+            optname=$(echo "$optname" | sed 's/-/_/g')
+            if is_in $optname $CMDLINE_SET; then
+                eval $optname='$optval'
+            elif is_in $optname $CMDLINE_APPEND; then
+                append $optname "$optval"
+            else
+                die_unknown $opt
+            fi
+        ;;
+    esac
+done
+
+for e in $env; do
+    eval "export $e"
+done
+
+disabled logging && logfile=/dev/null
+
+# Disable all the library-specific components if the library itself
+# is disabled, see AVCODEC_LIST and following _LIST variables.
+
+disable_components(){
+    disabled ${1} && disable $(
+        eval components="\$$(toupper ${1})_COMPONENTS"
+        map 'eval echo \${$(toupper ${v%s})_LIST}' $components
+    )
+}
+
+map 'disable_components $v' $LIBRARY_LIST
+
+echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
+set >> $logfile
+
+test -n "$valgrind" && toolchain="valgrind-memcheck"
+
+case "$toolchain" in
+    *-asan)
+        cc_default="${toolchain%-asan}"
+        add_cflags  -fsanitize=address
+        add_ldflags -fsanitize=address
+    ;;
+    *-msan)
+        cc_default="${toolchain%-msan}"
+        add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
+        add_ldflags -fsanitize=memory
+    ;;
+    *-tsan)
+        cc_default="${toolchain%-tsan}"
+        add_cflags  -fsanitize=thread -pie
+        add_ldflags -fsanitize=thread -pie
+        case "$toolchain" in
+            gcc-tsan)
+                add_cflags  -fPIC
+                add_ldflags -fPIC
+                ;;
+        esac
+    ;;
+    *-usan)
+        cc_default="${toolchain%-usan}"
+        add_cflags  -fsanitize=undefined
+        add_ldflags -fsanitize=undefined
+    ;;
+    valgrind-*)
+        target_exec_default="valgrind"
+        case "$toolchain" in
+            valgrind-massif)
+                target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
+                ;;
+            valgrind-memcheck)
+                target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
+                ;;
+        esac
+    ;;
+    msvc)
+        # Check whether the current MSVC version needs the C99 converter.
+        # From MSVC 2013 (compiler major version 18) onwards, it does actually
+        # support enough of C99 to build ffmpeg. Default to the new
+        # behaviour if the regexp was unable to match anything, since this
+        # successfully parses the version number of existing supported
+        # versions that require the converter (MSVC 2010 and 2012).
+        cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
+        if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
+            cc_default="cl"
+        else
+            cc_default="c99wrap cl"
+        fi
+        ld_default="$source_path/compat/windows/mslink"
+        nm_default="dumpbin -symbols"
+        ar_default="lib"
+        case "$arch" in
+        arm*)
+            as_default="armasm"
+            ;;
+        esac
+        target_os_default="win32"
+        # Use a relative path for TMPDIR. This makes sure all the
+        # ffconf temp files are written with a relative path, avoiding
+        # issues with msys/win32 path conversion for MSVC parameters
+        # such as -Fo<file> or -out:<file>.
+        TMPDIR=.
+    ;;
+    icl)
+        cc_default="icl"
+        ld_default="xilink"
+        nm_default="dumpbin -symbols"
+        ar_default="xilib"
+        target_os_default="win32"
+        TMPDIR=.
+    ;;
+    gcov)
+        add_cflags  -fprofile-arcs -ftest-coverage
+        add_ldflags -fprofile-arcs -ftest-coverage
+    ;;
+    llvm-cov)
+        add_cflags -fprofile-arcs -ftest-coverage
+        add_ldflags --coverage
+    ;;
+    hardened)
+        add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
+        add_cflags   -fno-strict-overflow -fstack-protector-all
+        add_ldflags  -Wl,-z,relro -Wl,-z,now
+    ;;
+    ?*)
+        die "Unknown toolchain $toolchain"
+    ;;
+esac
+
+test -n "$cross_prefix" && enable cross_compile
+
+if enabled cross_compile; then
+    test -n "$arch" && test -n "$target_os" ||
+        die "Must specify target arch and OS when cross-compiling"
+fi
+
+ar_default="${cross_prefix}${ar_default}"
+cc_default="${cross_prefix}${cc_default}"
+cxx_default="${cross_prefix}${cxx_default}"
+nm_default="${cross_prefix}${nm_default}"
+pkg_config_default="${cross_prefix}${pkg_config_default}"
+if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
+    ranlib_default="${cross_prefix}${ranlib_default} -D"
+else
+    ranlib_default="${cross_prefix}${ranlib_default}"
+fi
+strip_default="${cross_prefix}${strip_default}"
+windres_default="${cross_prefix}${windres_default}"
+
+sysinclude_default="${sysroot}/usr/include"
+
+set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
+    target_exec target_os yasmexe
+enabled cross_compile || host_cc_default=$cc
+set_default host_cc
+
+pkg_config_fail_message=""
+if ! $pkg_config --version >/dev/null 2>&1; then
+    warn "$pkg_config not found, library detection may fail."
+    pkg_config=false
+elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
+    pkg_config_fail_message="
+Note: When building a static binary, add --pkg-config-flags=\"--static\"."
+fi
+
+if test $doxygen != $doxygen_default && \
+  ! $doxygen --version >/dev/null 2>&1; then
+    warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
+fi
+
+exesuf() {
+    case $1 in
+        mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
+    esac
+}
+
+EXESUF=$(exesuf $target_os)
+HOSTEXESUF=$(exesuf $host_os)
+
+# set temporary file name
+: ${TMPDIR:=$TEMPDIR}
+: ${TMPDIR:=$TMP}
+: ${TMPDIR:=/tmp}
+
+if [ -n "$tempprefix" ] ; then
+    mktemp(){
+        echo $tempprefix.${HOSTNAME}.${UID}
+    }
+elif ! check_cmd mktemp -u XXXXXX; then
+    # simple replacement for missing mktemp
+    # NOT SAFE FOR GENERAL USE
+    mktemp(){
+        echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
+    }
+fi
+
+tmpfile(){
+    tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
+        (set -C; exec > $tmp) 2>/dev/null ||
+        die "Unable to create temporary file in $TMPDIR."
+    append TMPFILES $tmp
+    eval $1=$tmp
+}
+
+trap 'rm -f -- $TMPFILES' EXIT
+
+tmpfile TMPASM .asm
+tmpfile TMPC   .c
+tmpfile TMPCPP .cpp
+tmpfile TMPE   $EXESUF
+tmpfile TMPH   .h
+tmpfile TMPM   .m
+tmpfile TMPO   .o
+tmpfile TMPS   .S
+tmpfile TMPSH  .sh
+tmpfile TMPV   .ver
+
+unset -f mktemp
+
+chmod +x $TMPE
+
+# make sure we can execute files in $TMPDIR
+cat > $TMPSH 2>> $logfile <<EOF
+#! /bin/sh
+EOF
+chmod +x $TMPSH >> $logfile 2>&1
+if ! $TMPSH >> $logfile 2>&1; then
+    cat <<EOF
+Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
+variable to another directory and make sure that it is not mounted noexec.
+EOF
+    die "Sanity test failed."
+fi
+
+armasm_flags(){
+    for flag; do
+        case $flag in
+            # Filter out MSVC cl.exe options from cflags that shouldn't
+            # be passed to gas-preprocessor
+            -M[TD]*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+ccc_flags(){
+    for flag; do
+        case $flag in
+            -std=c99)           echo -c99                       ;;
+            -mcpu=*)            echo -arch ${flag#*=}           ;;
+            -mieee)             echo -ieee                      ;;
+            -O*|-fast)          echo $flag                      ;;
+            -fno-math-errno)    echo -assume nomath_errno       ;;
+            -g)                 echo -g3                        ;;
+            -Wall)              echo -msg_enable level2         ;;
+            -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
+            -Wl,*)              echo $flag                      ;;
+            -f*|-W*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+cparser_flags(){
+    for flag; do
+        case $flag in
+            -Wno-switch)             echo -Wno-switch-enum ;;
+            -Wno-format-zero-length) ;;
+            -Wdisabled-optimization) ;;
+            -Wno-pointer-sign)       echo -Wno-other ;;
+            *)                       echo $flag ;;
+        esac
+    done
+}
+
+msvc_common_flags(){
+    for flag; do
+        case $flag in
+            # In addition to specifying certain flags under the compiler
+            # specific filters, they must be specified here as well or else the
+            # generic catch all at the bottom will print the original flag.
+            -Wall)                ;;
+            -std=c99)             ;;
+            # Common flags
+            -fomit-frame-pointer) ;;
+            -g)                   echo -Z7 ;;
+            -fno-math-errno)      ;;
+            -fno-common)          ;;
+            -fno-signed-zeros)    ;;
+            -fPIC)                ;;
+            -mthumb)              ;;
+            -march=*)             ;;
+            -lz)                  echo zlib.lib ;;
+            -lavifil32)           echo vfw32.lib ;;
+            -lavicap32)           echo vfw32.lib user32.lib ;;
+            -lx264)               echo libx264.lib ;;
+            -l*)                  echo ${flag#-l}.lib ;;
+            -LARGEADDRESSAWARE)   echo $flag ;;
+            -L*)                  echo -libpath:${flag#-L} ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+msvc_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
+                                       -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
+                                       -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
+                                       -wd4307 \
+                                       -wd4273 -wd4554 -wd4701 ;;
+        esac
+    done
+}
+
+icl_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            # Despite what Intel's documentation says -Wall, which is supported
+            # on Windows, does enable remarks so disable them here.
+            -Wall)                echo $flag -Qdiag-disable:remark ;;
+            -std=c99)             echo -Qstd=c99 ;;
+            -flto)                echo -ipo ;;
+        esac
+    done
+}
+
+icc_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -ipo ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+pgi_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
+            -fomit-frame-pointer) echo -Mnoframe ;;
+            -g)                   echo -gopt ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+suncc_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    native)                   echo -xtarget=native       ;;
+                    v9|niagara)               echo -xarch=sparc          ;;
+                    ultrasparc)               echo -xarch=sparcvis       ;;
+                    ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
+                    i586|pentium)             echo -xchip=pentium        ;;
+                    i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
+                    pentium3*|c3-2)           echo -xtarget=pentium3     ;;
+                    pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
+                    pentium4*)          echo -xtarget=pentium4           ;;
+                    prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
+                    *-sse3)             echo -xarch=sse3                 ;;
+                    core2)              echo -xarch=ssse3 -xchip=core2   ;;
+                    bonnell)                   echo -xarch=ssse3         ;;
+                    corei7|nehalem)            echo -xtarget=nehalem     ;;
+                    westmere)                  echo -xtarget=westmere    ;;
+                    silvermont)                echo -xarch=sse4_2        ;;
+                    corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
+                    core-avx*|ivybridge|haswell|broadwell)
+                                               echo -xarch=avx           ;;
+                    amdfam10|barcelona)        echo -xtarget=barcelona   ;;
+                    btver1)                    echo -xarch=amdsse4a      ;;
+                    btver2|bdver*)             echo -xarch=avx           ;;
+                    athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
+                    k8|opteron|athlon64|athlon-fx)
+                                               echo -xarch=sse2a         ;;
+                    athlon*)                   echo -xarch=pentium_proa  ;;
+                esac
+                ;;
+            -std=c99)             echo -xc99              ;;
+            -fomit-frame-pointer) echo -xregs=frameptr    ;;
+            -fPIC)                echo -KPIC -xcode=pic32 ;;
+            -W*,*)                echo $flag              ;;
+            -f*-*|-W*|-mimpure-text)                      ;;
+            -shared)              echo -G                 ;;
+            *)                    echo $flag              ;;
+        esac
+    done
+}
+
+tms470_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    armv7-a|cortex-a*)      echo -mv=7a8 ;;
+                    armv7-r|cortex-r*)      echo -mv=7r4 ;;
+                    armv7-m|cortex-m*)      echo -mv=7m3 ;;
+                    armv6*|arm11*)          echo -mv=6   ;;
+                    armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
+                                            echo -mv=5e  ;;
+                    armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
+                esac
+                ;;
+            -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
+            -mfpu=vfp)      echo --float_support=vfpv2        ;;
+            -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
+            -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
+            -msoft-float)   echo --float_support=vfplib       ;;
+            -O[0-3]|-mf=*)  echo $flag                        ;;
+            -g)             echo -g -mn                       ;;
+            -pds=*)         echo $flag                        ;;
+            -D*|-I*)        echo $flag                        ;;
+            --gcc|--abi=*)  echo $flag                        ;;
+            -me)            echo $flag                        ;;
+        esac
+    done
+}
+
+probe_cc(){
+    pfx=$1
+    _cc=$2
+    first=$3
+
+    unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
+    unset _ld_o _ldflags _ld_lib _ld_path
+    unset _depflags _DEPCMD _DEPFLAGS
+    _flags_filter=echo
+
+    if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
+        true # no-op to avoid reading stdin in following checks
+    elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
+        _type=llvm_gcc
+        gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
+        _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -v 2>&1 | grep -qi ^gcc; then
+        _type=gcc
+        gcc_version=$($_cc --version | head -n1)
+        gcc_basever=$($_cc -dumpversion)
+        gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
+        gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
+        _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
+        case $gcc_basever in
+            2) ;;
+            2.*) ;;
+            *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
+        esac
+        if [ "$first" = true ]; then
+            case $gcc_basever in
+                4.2*)
+                warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
+            esac
+        fi
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc --version 2>/dev/null | grep -q ^icc; then
+        _type=icc
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+        _cflags_noopt='-O1'
+        _flags_filter=icc_flags
+    elif $_cc -v 2>&1 | grep -q xlc; then
+        _type=xlc
+        _ident=$($_cc -qversion 2>/dev/null | head -n1)
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -qcompact'
+    elif $_cc -V 2>/dev/null | grep -q Compaq; then
+        _type=ccc
+        _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
+        _DEPFLAGS='-M'
+        _cflags_speed='-fast'
+        _cflags_size='-O1'
+        _flags_filter=ccc_flags
+    elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
+        test -d "$sysroot" || die "No valid sysroot specified."
+        _type=armcc
+        _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
+        armcc_conf="$PWD/armcc.conf"
+        $_cc --arm_linux_configure                 \
+             --arm_linux_config_file="$armcc_conf" \
+             --configure_sysroot="$sysroot"        \
+             --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
+             die "Error creating armcc configuration file."
+        $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
+        _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
+        as_default="${cross_prefix}gcc"
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
+        _type=tms470
+        _ident=$($_cc -version | head -n1 | tr -s ' ')
+        _flags='--gcc --abi=eabi -me'
+        _cc_e='-ppl -fe=$@'
+        _cc_o='-fe=$@'
+        _depflags='-ppa -ppd=$(@:.o=.d)'
+        _cflags_speed='-O3 -mf=5'
+        _cflags_size='-O3 -mf=2'
+        _flags_filter=tms470_flags
+    elif $_cc -v 2>&1 | grep -q clang; then
+        _type=clang
+        _ident=$($_cc --version 2>/dev/null | head -n1)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -V 2>&1 | grep -q Sun; then
+        _type=suncc
+        _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
+        _DEPFLAGS='-xM1 -xc99'
+        _ldflags='-std=c99'
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -xspace'
+        _flags_filter=suncc_flags
+    elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
+        _type=pathscale
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization'
+    elif $_cc -v 2>&1 | grep -q Open64; then
+        _type=open64
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
+    elif $_cc -V 2>&1 | grep -q Portland; then
+        _type=pgi
+        _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
+        opt_common='-alias=ansi -Mdse -Mlre -Mpre'
+        _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
+        _cflags_size="-O2 -Munroll=c:1 $opt_common"
+        _cflags_noopt="-O"
+        _flags_filter=pgi_flags
+    elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
+        _type=armasm
+        _ident=$($_cc | head -n1)
+        # 4509: "This form of conditional instruction is deprecated"
+        _flags="-nologo -ignore 4509"
+        _flags_filter=armasm_flags
+    elif $_cc 2>&1 | grep -q Intel; then
+        _type=icl
+        _ident=$($_cc 2>&1 | head -n1)
+        _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
+        # Not only is O3 broken on 13.x+ but it is slower on all previous
+        # versions (tested) as well.
+        _cflags_speed="-O2"
+        _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
+        if $_cc 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P'
+        _flags_filter=icl_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        # -Qdiag-error to make icl error when seeing certain unknown arguments
+        _flags='-nologo -Qdiag-error:4044,10157'
+        # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
+        # with MSVC which enables it by default.
+        _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
+        disable stripping
+    elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
+        _type=msvc
+        _ident=$($_cc 2>&1 | head -n1)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
+        _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
+        _cflags_speed="-O2"
+        _cflags_size="-O1"
+        if $_cc -nologo- 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P -Fi$@'
+        _flags_filter=msvc_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        _flags='-nologo'
+        _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
+        disable stripping
+    elif $_cc --version 2>/dev/null | grep -q ^cparser; then
+        _type=cparser
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O4'
+        _cflags_size='-O2'
+        _flags_filter=cparser_flags
+    fi
+
+    eval ${pfx}_type=\$_type
+    eval ${pfx}_ident=\$_ident
+}
+
+set_ccvars(){
+    eval ${1}_C=\${_cc_c-\${${1}_C}}
+    eval ${1}_E=\${_cc_e-\${${1}_E}}
+    eval ${1}_O=\${_cc_o-\${${1}_O}}
+
+    if [ -n "$_depflags" ]; then
+        eval ${1}_DEPFLAGS=\$_depflags
+    else
+        eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
+        eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
+        eval DEP${1}FLAGS=\$_flags
+    fi
+}
+
+probe_cc cc "$cc" "true"
+cflags_filter=$_flags_filter
+cflags_speed=$_cflags_speed
+cflags_size=$_cflags_size
+cflags_noopt=$_cflags_noopt
+add_cflags $_flags $_cflags
+cc_ldflags=$_ldflags
+set_ccvars CC
+
+probe_cc hostcc "$host_cc"
+host_cflags_filter=$_flags_filter
+add_host_cflags  $_flags $_cflags
+set_ccvars HOSTCC
+
+test -n "$cc_type" && enable $cc_type ||
+    warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
+
+: ${as_default:=$cc}
+: ${objcc_default:=$cc}
+: ${dep_cc_default:=$cc}
+: ${ld_default:=$cc}
+: ${host_ld_default:=$host_cc}
+set_default ar as objcc dep_cc ld ln_s host_ld windres
+
+probe_cc as "$as"
+asflags_filter=$_flags_filter
+add_asflags $_flags $_cflags
+set_ccvars AS
+
+probe_cc objcc "$objcc"
+objcflags_filter=$_flags_filter
+add_objcflags $_flags $_cflags
+set_ccvars OBJC
+
+probe_cc ld "$ld"
+ldflags_filter=$_flags_filter
+add_ldflags $_flags $_ldflags
+test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
+LD_O=${_ld_o-$LD_O}
+LD_LIB=${_ld_lib-$LD_LIB}
+LD_PATH=${_ld_path-$LD_PATH}
+
+probe_cc hostld "$host_ld"
+host_ldflags_filter=$_flags_filter
+add_host_ldflags $_flags $_ldflags
+HOSTLD_O=${_ld_o-$HOSTLD_O}
+
+if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
+    probe_cc depcc "$dep_cc"
+    CCDEP=${_DEPCMD:-$DEPCMD}
+    CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
+    DEPCCFLAGS=$_flags
+fi
+
+if $ar 2>&1 | grep -q Microsoft; then
+    arflags="-nologo"
+    ar_o='-out:$@'
+elif $ar 2>&1 | grep -q 'Texas Instruments'; then
+    arflags="rq"
+    ar_o='$@'
+elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
+    arflags='-Xany -r -c'
+    ar_o='$@'
+elif $ar 2>&1 | grep -q "\[D\] "; then
+    arflags="rcD"
+    ar_o='$@'
+else
+    arflags="rc"
+    ar_o='$@'
+fi
+
+add_cflags $extra_cflags
+add_cxxflags $extra_cxxflags
+add_objcflags $extra_objcflags
+add_asflags $extra_cflags
+
+if test -n "$sysroot"; then
+    case "$cc_type" in
+        gcc|llvm_gcc|clang)
+            add_cppflags --sysroot="$sysroot"
+            add_ldflags --sysroot="$sysroot"
+# On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
+            add_cppflags -isysroot "$sysroot"
+            add_ldflags -isysroot "$sysroot"
+        ;;
+        tms470)
+            add_cppflags -I"$sysinclude"
+            add_ldflags  --sysroot="$sysroot"
+        ;;
+    esac
+fi
+
+if test "$cpu" = host; then
+    enabled cross_compile &&
+        die "--cpu=host makes no sense when cross-compiling."
+
+    case "$cc_type" in
+        gcc|llvm_gcc)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*$1=/{
+                            s/.*$1=\\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march || check_native -mcpu)
+        ;;
+        clang)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*-target-cpu /{
+                            s/.*-target-cpu \\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march)
+        ;;
+    esac
+
+    test "${cpu:-host}" = host &&
+        die "--cpu=host not supported with compiler $cc"
+fi
+
+# Deal with common $arch aliases
+case "$arch" in
+    aarch64|arm64)
+        arch="aarch64"
+    ;;
+    arm*|iPad*|iPhone*)
+        arch="arm"
+    ;;
+    mips*|IP*)
+        case "$arch" in
+        *el)
+            add_cppflags -EL
+            add_ldflags -EL
+        ;;
+        *eb)
+            add_cppflags -EB
+            add_ldflags -EB
+        ;;
+        esac
+        arch="mips"
+    ;;
+    parisc*|hppa*)
+        arch="parisc"
+    ;;
+    "Power Macintosh"|ppc*|powerpc*)
+        arch="ppc"
+    ;;
+    s390|s390x)
+        arch="s390"
+    ;;
+    sh4|sh)
+        arch="sh4"
+    ;;
+    sun4u|sparc*)
+        arch="sparc"
+    ;;
+    tilegx|tile-gx)
+        arch="tilegx"
+    ;;
+    i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
+        arch="x86"
+    ;;
+esac
+
+is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
+enable $arch
+
+# Add processor-specific flags
+if enabled aarch64; then
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled alpha; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled arm; then
+
+    check_arm_arch() {
+        check_cpp_condition stddef.h \
+            "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
+            $cpuflags
+    }
+
+    probe_arm_arch() {
+        if   check_arm_arch 4;        then echo armv4
+        elif check_arm_arch 4T;       then echo armv4t
+        elif check_arm_arch 5;        then echo armv5
+        elif check_arm_arch 5E;       then echo armv5e
+        elif check_arm_arch 5T;       then echo armv5t
+        elif check_arm_arch 5TE;      then echo armv5te
+        elif check_arm_arch 5TEJ;     then echo armv5te
+        elif check_arm_arch 6;        then echo armv6
+        elif check_arm_arch 6J;       then echo armv6j
+        elif check_arm_arch 6K;       then echo armv6k
+        elif check_arm_arch 6Z;       then echo armv6z
+        elif check_arm_arch 6ZK;      then echo armv6zk
+        elif check_arm_arch 6T2;      then echo armv6t2
+        elif check_arm_arch 7;        then echo armv7
+        elif check_arm_arch 7A  7_A;  then echo armv7-a
+        elif check_arm_arch 7S;       then echo armv7-a
+        elif check_arm_arch 7R  7_R;  then echo armv7-r
+        elif check_arm_arch 7M  7_M;  then echo armv7-m
+        elif check_arm_arch 7EM 7E_M; then echo armv7-m
+        elif check_arm_arch 8A  8_A;  then echo armv8-a
+        fi
+    }
+
+    [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+            subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+            case $cpu in
+                cortex-a*)                               subarch=armv7a  ;;
+                cortex-r*)                               subarch=armv7r  ;;
+                cortex-m*)                 enable thumb; subarch=armv7m  ;;
+                arm11*)                                  subarch=armv6   ;;
+                arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
+                armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
+                *)                             subarch=$(probe_arm_arch) ;;
+            esac
+        ;;
+    esac
+
+    case "$subarch" in
+        armv5t*)    enable fast_clz                ;;
+        armv[6-8]*)
+            enable fast_clz
+            disabled fast_unaligned || enable fast_unaligned
+            ;;
+    esac
+
+elif enabled avr32; then
+
+    case $cpu in
+        ap7[02]0[0-2])
+            subarch="avr32_ap"
+            cpuflags="-mpart=$cpu"
+        ;;
+        ap)
+            subarch="avr32_ap"
+            cpuflags="-march=$cpu"
+        ;;
+        uc3[ab]*)
+            subarch="avr32_uc"
+            cpuflags="-mcpu=$cpu"
+        ;;
+        uc)
+            subarch="avr32_uc"
+            cpuflags="-march=$cpu"
+        ;;
+    esac
+
+elif enabled bfin; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled mips; then
+
+    cpuflags="-march=$cpu"
+
+    if [ "$cpu" != "generic" ]; then
+        disable mips32r2
+        disable mips32r5
+        disable mips64r2
+        disable mips32r6
+        disable mips64r6
+        disable loongson2
+        disable loongson3
+
+        case $cpu in
+            24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
+                enable mips32r2
+                disable msa
+            ;;
+            p5600|i6400)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            loongson*)
+                enable loongson2
+                enable loongson3
+                enable local_aligned_8 local_aligned_16 local_aligned_32
+                enable simd_align_16
+                enable fast_64bit
+                enable fast_clz
+                enable fast_cmov
+                enable fast_unaligned
+                disable aligned_stack
+                case $cpu in
+                    loongson3*)
+                        cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2e)
+                        cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2f)
+                        cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
+                    ;;
+                esac
+            ;;
+            *)
+                # Unknown CPU. Disable everything.
+                warn "unknown CPU. Disabling all MIPS optimizations."
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+                disable msa
+                disable mmi
+            ;;
+        esac
+
+        case $cpu in
+            24kc)
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kf*)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kec|34kc|1004kc)
+                disable mipsfpu
+                disable mipsdspr2
+            ;;
+            24kef*|34kf*|1004kf*)
+                disable mipsdspr2
+            ;;
+            74kc)
+                disable mipsfpu
+            ;;
+            p5600)
+                enable mips32r5
+                check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
+            ;;
+            i6400)
+                enable mips64r6
+                check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
+            ;;
+        esac
+    else
+        # We do not disable anything. Is up to the user to disable the unwanted features.
+        warn 'generic cpu selected'
+    fi
+
+elif enabled ppc; then
+
+    disable ldbrx
+
+    case $(tolower $cpu) in
+        601|ppc601|powerpc601)
+            cpuflags="-mcpu=601"
+            disable altivec
+        ;;
+        603*|ppc603*|powerpc603*)
+            cpuflags="-mcpu=603"
+            disable altivec
+        ;;
+        604*|ppc604*|powerpc604*)
+            cpuflags="-mcpu=604"
+            disable altivec
+        ;;
+        g3|75*|ppc75*|powerpc75*)
+            cpuflags="-mcpu=750"
+            disable altivec
+        ;;
+        g4|745*|ppc745*|powerpc745*)
+            cpuflags="-mcpu=7450"
+            disable vsx
+        ;;
+        74*|ppc74*|powerpc74*)
+            cpuflags="-mcpu=7400"
+            disable vsx
+        ;;
+        g5|970|ppc970|powerpc970)
+            cpuflags="-mcpu=970"
+            disable vsx
+        ;;
+        power[3-6]*)
+            cpuflags="-mcpu=$cpu"
+            disable vsx
+        ;;
+        power[7-8]*)
+            cpuflags="-mcpu=$cpu"
+        ;;
+        cell)
+            cpuflags="-mcpu=cell"
+            enable ldbrx
+            disable vsx
+        ;;
+        e500mc)
+            cpuflags="-mcpu=e500mc"
+            disable altivec
+        ;;
+        e500v2)
+            cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
+            disable altivec
+            disable dcbzl
+        ;;
+        e500)
+            cpuflags="-mcpu=8540 -mhard-float"
+            disable altivec
+            disable dcbzl
+        ;;
+    esac
+
+elif enabled sparc; then
+
+    case $cpu in
+        cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
+            cpuflags="-mcpu=$cpu"
+        ;;
+        ultrasparc*|niagara[234])
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled x86; then
+
+    case $cpu in
+        i[345]86|pentium)
+            cpuflags="-march=$cpu"
+            disable i686
+            disable mmx
+        ;;
+        # targets that do NOT support nopl and conditional mov (cmov)
+        pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
+            cpuflags="-march=$cpu"
+            disable i686
+        ;;
+        # targets that do support nopl and conditional mov (cmov)
+        i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
+        |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
+            cpuflags="-march=$cpu"
+            enable i686
+            enable fast_cmov
+        ;;
+        # targets that do support conditional mov but on which it's slow
+        pentium4|pentium4m|prescott|nocona)
+            cpuflags="-march=$cpu"
+            enable i686
+            disable fast_cmov
+        ;;
+    esac
+
+fi
+
+if [ "$cpu" != generic ]; then
+    add_cflags  $cpuflags
+    add_asflags $cpuflags
+    test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
+fi
+
+# compiler sanity check
+check_exec <<EOF
+int main(void){ return 0; }
+EOF
+if test "$?" != 0; then
+    echo "$cc is unable to create an executable file."
+    if test -z "$cross_prefix" && ! enabled cross_compile ; then
+        echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
+        echo "Only do this if you know what cross compiling means."
+    fi
+    die "C compiler test failed."
+fi
+
+add_cppflags -D_ISOC99_SOURCE
+add_cxxflags -D__STDC_CONSTANT_MACROS
+add_cxxflags -std=c++98
+check_cflags -std=c99
+check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
+#include <stdlib.h>
+EOF
+check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
+#include <stdlib.h>
+EOF
+
+add_host_cppflags -D_ISOC99_SOURCE
+check_host_cflags -std=c99
+check_host_cflags -Wall
+check_host_cflags -O3
+
+check_64bit(){
+    arch32=$1
+    arch64=$2
+    expr=$3
+    check_code cc "" "int test[2*($expr) - 1]" &&
+        subarch=$arch64 || subarch=$arch32
+}
+
+case "$arch" in
+    aarch64|alpha|ia64)
+        spic=$shared
+    ;;
+    mips)
+        check_64bit mips mips64 '_MIPS_SIM > 1'
+        spic=$shared
+    ;;
+    parisc)
+        check_64bit parisc parisc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    ppc)
+        check_64bit ppc ppc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    s390)
+        check_64bit s390 s390x 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    sparc)
+        check_64bit sparc sparc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    x86)
+        check_64bit x86_32 x86_64 'sizeof(void *) > 4'
+        # Treat x32 as x64 for now. Note it also needs spic=$shared
+        test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
+            subarch=x86_64
+        if test "$subarch" = "x86_64"; then
+            spic=$shared
+        fi
+    ;;
+    ppc)
+        check_cc <<EOF && subarch="ppc64"
+        int test[(int)sizeof(char*) - 7];
+EOF
+    ;;
+esac
+
+enable $subarch
+enabled spic && enable_weak pic
+
+# OS specific
+case $target_os in
+    aix)
+        SHFLAGS=-shared
+        add_cppflags '-I\$(SRC_PATH)/compat/aix'
+        enabled shared && add_ldflags -Wl,-brtl
+        ;;
+    android)
+        disable symver
+        enable section_data_rel_ro
+        SLIB_INSTALL_NAME='$(SLIBNAME)'
+        SLIB_INSTALL_LINKS=
+        SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
+        ;;
+    haiku)
+        prefix_default="/boot/common"
+        network_extralibs="-lnetwork"
+        host_libs=
+        ;;
+    sunos)
+        SHFLAGS='-shared -Wl,-h,$$(@F)'
+        enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
+        network_extralibs="-lsocket -lnsl"
+        add_cppflags -D__EXTENSIONS__
+        # When using suncc to build, the Solaris linker will mark
+        # an executable with each instruction set encountered by
+        # the Solaris assembler.  As our libraries contain their own
+        # guards for processor-specific code, instead suppress
+        # generation of the HWCAPS ELF section on Solaris x86 only.
+        enabled_all suncc x86 &&
+            echo "hwcap_1 = OVERRIDE;" > mapfile &&
+            add_ldflags -Wl,-M,mapfile
+        nm_default='nm -P -g'
+        SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
+        ;;
+    netbsd)
+        disable symver
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        enabled gcc || check_ldflags -Wl,-zmuldefs
+        ;;
+    openbsd|bitrig)
+        disable symver
+        SHFLAGS='-shared'
+        SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
+        SLIB_INSTALL_LINKS=
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        ;;
+    dragonfly)
+        disable symver
+        ;;
+    freebsd)
+        ;;
+    bsd/os)
+        add_extralibs -lpoll -lgnugetopt
+        strip="strip -d"
+        ;;
+    darwin)
+        enabled ppc && add_asflags -force_cpusubtype_ALL
+        install_name_dir_default='$(SHLIBDIR)'
+        SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
+        enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
+        strip="${strip} -x"
+        add_ldflags -Wl,-dynamic,-search_paths_first
+        SLIBSUF=".dylib"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
+        objformat="macho"
+        enabled x86_64 && objformat="macho64"
+        enabled_any pic shared x86_64 ||
+            { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
+        check_header dispatch/dispatch.h &&
+            add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
+        ;;
+    msys*)
+        die "Native MSYS builds are discouraged, please use the MINGW environment."
+        ;;
+    mingw32*|mingw64*)
+        if test $target_os = "mingw32ce"; then
+            disable network
+        else
+            target_os=mingw32
+        fi
+        decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
+        decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
+        LIBTARGET=i386
+        if enabled x86_64; then
+            LIBTARGET="i386:x86-64"
+        elif enabled arm; then
+            LIBTARGET=arm-wince
+        fi
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        enabled x86_32 && check_ldflags -Wl,--large-address-aware
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        dlltool="${cross_prefix}dlltool"
+        if check_cmd lib.exe -list; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+            if enabled x86_64; then
+                LIBTARGET=x64
+            fi
+        elif check_cmd $dlltool --version; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
+        fi
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        check_ldflags -Wl,--nxcompat,--dynamicbase
+        # Lets work around some stupidity in binutils.
+        # ld will strip relocations from executables even though we need them
+        # for dynamicbase (ASLR).  Using -pie does retain the reloc section
+        # however ld then forgets what the entry point should be (oops) so we
+        # have to manually (re)set it.
+        if enabled x86_32; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
+        elif enabled x86_64; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
+            check_ldflags -Wl,--high-entropy-va # binutils 2.25
+            # Set image base >4GB for extra entropy with HEASLR
+            add_ldexeflags -Wl,--image-base,0x140000000
+            append SHFLAGS -Wl,--image-base,0x180000000
+        fi
+        ;;
+    win32|win64)
+        disable symver
+        if enabled shared; then
+            # Link to the import library instead of the normal static library
+            # for shared libs.
+            LD_LIB='%.lib'
+            # Cannot build both shared and static libs with MSVC or icl.
+            disable static
+        fi
+        enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        ;;
+    cygwin*)
+        target_os=cygwin
+        shlibdir_default="$bindir_default"
+        SLIBPREF="cyg"
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
+        SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
+        objformat="win32"
+        enable dos_paths
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        ;;
+    *-dos|freedos|opendos)
+        network_extralibs="-lsocket"
+        objformat="coff"
+        enable dos_paths
+        add_cppflags -U__STRICT_ANSI__
+        ;;
+    linux)
+        enable dv1394
+        enable section_data_rel_ro
+        ;;
+    irix*)
+        target_os=irix
+        ranlib="echo ignoring ranlib"
+        ;;
+    os/2*)
+        strip="lxlite -CS"
+        objformat="aout"
+        add_cppflags -D_GNU_SOURCE
+        add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
+        SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
+        LIBSUF="_s.a"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
+            echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
+            echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
+            echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
+            emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
+        SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
+            emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
+        enable dos_paths
+        enable_weak os2threads
+        ;;
+    gnu/kfreebsd)
+        add_cppflags -D_BSD_SOURCE
+        ;;
+    gnu)
+        ;;
+    qnx)
+        add_cppflags -D_QNX_SOURCE
+        network_extralibs="-lsocket"
+        ;;
+    symbian)
+        SLIBSUF=".dll"
+        enable dos_paths
+        add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
+        add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
+        add_ldflags -Wl,--target1-abs,--no-undefined \
+                    -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
+                    -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
+        add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
+                      -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
+                      -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
+        ;;
+    osf1)
+        add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
+        ;;
+    minix)
+        ;;
+    plan9)
+        add_cppflags -D_C99_SNPRINTF_EXTENSION  \
+                     -D_REENTRANT_SOURCE        \
+                     -D_RESEARCH_SOURCE         \
+                     -DFD_SETSIZE=96            \
+                     -DHAVE_SOCK_OPTS
+        add_compat strtod.o strtod=avpriv_strtod
+        network_extralibs='-lbsd'
+        exeobjs=compat/plan9/main.o
+        disable ffserver
+        cp_f='cp'
+        ;;
+    none)
+        ;;
+    *)
+        die "Unknown OS '$target_os'."
+        ;;
+esac
+
+# test if creating links works
+link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
+link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
+mkdir "$link_dest"
+$ln_s "$link_dest" "$link_name"
+touch "$link_dest/test_file"
+if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
+    # create link to source path
+    [ -e src ] && rm src
+    $ln_s "$source_path" src
+    source_link=src
+else
+    # creating directory links doesn't work
+    # fall back to using the full source path
+    source_link="$source_path"
+fi
+# cleanup
+rm -r "$link_dest"
+rm -r "$link_name"
+
+# determine libc flavour
+
+probe_libc(){
+    pfx=$1
+    pfx_no_=${pfx%_}
+    # uclibc defines __GLIBC__, so it needs to be checked before glibc.
+    if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
+        eval ${pfx}libc_type=uclibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
+        eval ${pfx}libc_type=glibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    # MinGW headers can be installed on Cygwin, so check for newlib first.
+    elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
+        eval ${pfx}libc_type=newlib
+        add_${pfx}cppflags -U__STRICT_ANSI__
+    # MinGW64 is backwards compatible with MinGW32, so check for it first.
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
+        eval ${pfx}libc_type=mingw64
+        if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
+            add_compat msvcrt/snprintf.o
+            add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
+        fi
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
+         check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
+        eval ${pfx}libc_type=mingw32
+        check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
+            (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
+            die "ERROR: MinGW32 runtime version must be >= 3.15."
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
+        eval ${pfx}libc_type=msvcrt
+        if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
+            if [ "$pfx" = host_ ]; then
+                add_host_cppflags -Dsnprintf=_snprintf
+            else
+                add_compat strtod.o strtod=avpriv_strtod
+                add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
+                                             _snprintf=avpriv_snprintf  \
+                                             vsnprintf=avpriv_vsnprintf
+            fi
+        fi
+        # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
+        # 0x601 by default unless something else is set by the user.
+        # This can easily lead to us detecting functions only present
+        # in such new versions and producing binaries requiring windows 7.0.
+        # Therefore explicitly set the default to XP unless the user has
+        # set something else on the command line.
+        # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
+        # family. For these cases, configure is free to use any functions
+        # found in the SDK headers by default. (Alternatively, we could force
+        # _WIN32_WINNT to 0x0602 in that case.)
+        check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
+            { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
+#ifdef WINAPI_FAMILY
+#include <winapifamily.h>
+#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#error not desktop
+#endif
+#endif
+EOF
+    elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
+        eval ${pfx}libc_type=klibc
+    elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
+        eval ${pfx}libc_type=bionic
+    elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
+        eval ${pfx}libc_type=solaris
+        add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
+    fi
+    check_${pfx}cc <<EOF
+#include <time.h>
+void *v = localtime_r;
+EOF
+test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+#include <time.h>
+void *v = localtime_r;
+EOF
+
+}
+
+probe_libc
+test -n "$libc_type" && enable libc_$libc_type
+probe_libc host_
+test -n "$host_libc_type" && enable host_libc_$host_libc_type
+
+case $libc_type in
+    bionic)
+        add_compat strtod.o strtod=avpriv_strtod
+        ;;
+esac
+
+# hacks for compiler/libc/os combinations
+
+if enabled_all tms470 libc_glibc; then
+    CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
+    add_cppflags -D__USER_LABEL_PREFIX__=
+    add_cppflags -D__builtin_memset=memset
+    add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
+    add_cflags   -pds=48    # incompatible redefinition of macro
+fi
+
+if enabled_all ccc libc_glibc; then
+    add_ldflags -Wl,-z,now  # calls to libots crash without this
+fi
+
+check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
+    add_cppflags '-I\$(SRC_PATH)/compat/float'
+
+esc(){
+    echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
+}
+
+echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
+
+check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
+
+set_default libdir
+: ${shlibdir_default:="$libdir"}
+: ${pkgconfigdir_default:="$libdir/pkgconfig"}
+
+set_default $PATHS_LIST
+set_default nm
+
+# we need to build at least one lib type
+if ! enabled_any static shared; then
+    cat <<EOF
+At least one library type must be built.
+Specify --enable-static to build the static libraries or --enable-shared to
+build the shared libraries as well. To only build the shared libraries specify
+--disable-static in addition to --enable-shared.
+EOF
+    exit 1
+fi
+
+die_license_disabled() {
+    enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
+}
+
+die_license_disabled_gpl() {
+    enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
+}
+
+die_license_disabled gpl frei0r
+die_license_disabled gpl libcdio
+die_license_disabled gpl librubberband
+die_license_disabled gpl libsmbclient
+die_license_disabled gpl libvidstab
+die_license_disabled gpl libx264
+die_license_disabled gpl libx265
+die_license_disabled gpl libxavs
+die_license_disabled gpl libxvid
+die_license_disabled gpl x11grab
+
+die_license_disabled nonfree cuda
+die_license_disabled nonfree cuvid
+die_license_disabled nonfree libfaac
+die_license_disabled nonfree libnpp
+enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
+enabled gpl && die_license_disabled_gpl nonfree openssl
+
+die_license_disabled version3 gmp
+die_license_disabled version3 libopencore_amrnb
+die_license_disabled version3 libopencore_amrwb
+die_license_disabled version3 libsmbclient
+die_license_disabled version3 libvo_amrwbenc
+
+enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
+
+disabled optimizations || check_cflags -fomit-frame-pointer
+
+enable_weak_pic() {
+    disabled pic && return
+    enable pic
+    add_cppflags -DPIC
+    case "$target_os" in
+    mingw*|cygwin*)
+        ;;
+    *)
+        add_cflags -fPIC
+        ;;
+    esac
+    add_asflags  -fPIC
+}
+
+enabled pic && enable_weak_pic
+
+check_cc <<EOF || die "Symbol mangling check failed."
+int ff_extern;
+EOF
+sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
+extern_prefix=${sym%%ff_extern*}
+
+check_cc <<EOF && enable_weak inline_asm
+void foo(void) { __asm__ volatile ("" ::); }
+EOF
+
+_restrict=
+for restrict_keyword in restrict __restrict__ __restrict; do
+    check_cc <<EOF && _restrict=$restrict_keyword && break
+void foo(char * $restrict_keyword p);
+EOF
+done
+
+check_cc <<EOF && enable pragma_deprecated
+void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
+EOF
+
+check_cc <<EOF && enable attribute_packed
+struct { int x; } __attribute__((packed)) x;
+EOF
+
+check_cc <<EOF && enable attribute_may_alias
+union { int x; } __attribute__((may_alias)) x;
+EOF
+
+check_cc <<EOF || die "endian test failed"
+unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
+EOF
+od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
+
+if ! enabled ppc64 || enabled bigendian; then
+    disable vsx
+fi
+
+check_gas() {
+    log "check_gas using '$as' as AS"
+    # :vararg is used on aarch64, arm and ppc altivec
+    check_as <<EOF || return 1
+.macro m n, y:vararg=0
+\n: .int \y
+.endm
+m x
+EOF
+    # .altmacro is only used in arm asm
+    ! enabled arm || check_as <<EOF || return 1
+.altmacro
+EOF
+    enable gnu_as
+    return 0
+}
+
+if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
+    nogas=:
+    enabled_any arm aarch64 && nogas=die
+    enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
+    as_noop=-v
+
+    case $as_type in
+        arm*) gaspp_as_type=armasm; as_noop=-h ;;
+        gcc)  gaspp_as_type=gas ;;
+        *)    gaspp_as_type=$as_type ;;
+    esac
+
+    [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
+
+    test "${as#*gas-preprocessor.pl}" != "$as" ||
+    check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
+        gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
+
+    if ! check_gas ; then
+        as=${gas:=$as}
+        check_gas || \
+            $nogas "GNU assembler not found, install/update gas-preprocessor"
+    fi
+
+    check_as <<EOF && enable as_func
+.func test
+.endfunc
+EOF
+fi
+
+check_inline_asm inline_asm_labels '"1:\n"'
+
+check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
+
+if enabled aarch64; then
+    enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
+    # internal assembler in clang 3.3 does not support this instruction
+    enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
+    enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
+
+    map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
+
+elif enabled alpha; then
+
+    check_cflags -mieee
+
+elif enabled arm; then
+
+    enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
+
+    check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
+float func(float a, float b){ return a+b; }
+EOF
+
+    enabled thumb && check_cflags -mthumb || check_cflags -marm
+
+    if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
+        enable vfp_args
+    elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
+        enable vfp_args
+    elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
+        case "${cross_prefix:-$cc}" in
+            *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
+            *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
+__asm__ (".eabi_attribute 28, 1");
+int main(void) { return 0; }
+EOF
+        esac
+        warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
+    fi
+
+    enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
+    enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
+    enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
+    enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
+    enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
+    enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
+    enabled setend  && check_insn setend  'setend be'
+
+    [ $target_os = linux ] || [ $target_os = android ] ||
+        map 'enabled_any ${v}_external ${v}_inline || disable $v' \
+            $ARCH_EXT_LIST_ARM
+
+    check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
+
+    check_as <<EOF && enable as_dn_directive
+ra .dn d0.i16
+.unreq ra
+EOF
+
+    # llvm's integrated assembler supports .object_arch from llvm 3.5
+    [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
+.object_arch armv4
+EOF
+
+    [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
+
+elif enabled mips; then
+
+    enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
+    enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
+    enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
+
+    # Enable minimum ISA based on selected options
+    if enabled mips64; then
+        enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
+        enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
+        disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
+    else
+        enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
+        enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
+        enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
+        disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
+    fi
+
+    enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
+    enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
+    enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
+    enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
+    enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
+
+elif enabled parisc; then
+
+    if enabled gcc; then
+        case $($cc -dumpversion) in
+            4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
+        esac
+    fi
+
+elif enabled ppc; then
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
+    check_inline_asm ibm_asm   '"add 0, 0, 0"'
+    check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
+    check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
+
+    # AltiVec flags: The FSF version of GCC differs from the Apple version
+    if enabled altivec; then
+        check_cflags -maltivec -mabi=altivec &&
+        { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
+        check_cflags -faltivec
+
+        # check if our compiler supports Motorola AltiVec C API
+        check_cc <<EOF || disable altivec
+$inc_altivec_h
+int main(void) {
+    vector signed int v1 = (vector signed int) { 0 };
+    vector signed int v2 = (vector signed int) { 1 };
+    v1 = vec_add(v1, v2);
+    return 0;
+}
+EOF
+
+        enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
+    fi
+
+    if enabled vsx; then
+        check_cflags -mvsx &&
+        check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
+    fi
+
+    if enabled power8; then
+        check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
+    fi
+
+elif enabled x86; then
+
+    check_builtin rdtsc    intrin.h   "__rdtsc()"
+    check_builtin mm_empty mmintrin.h "_mm_empty()"
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    # check whether EBP is available on x86
+    # As 'i' is stored on the stack, this program will crash
+    # if the base pointer is used to access it because the
+    # base pointer is cleared in the inline assembly code.
+    check_exec_crash <<EOF && enable ebp_available
+volatile int i=0;
+__asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
+return i;
+EOF
+
+    # check whether EBX is available on x86
+    check_inline_asm ebx_available '""::"b"(0)' &&
+        check_inline_asm ebx_available '"":::"%ebx"'
+
+    # check whether xmm clobbers are supported
+    check_inline_asm xmm_clobbers '"":::"%xmm0"'
+
+    check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
+        check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
+
+    # check whether binutils is new enough to compile SSSE3/MMXEXT
+    enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
+    enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
+
+    if ! disabled_any asm mmx yasm; then
+        if check_cmd $yasmexe --version; then
+            enabled x86_64 && yasm_extra="-m amd64"
+            yasm_debug="-g dwarf2"
+        elif check_cmd nasm -v; then
+            yasmexe=nasm
+            yasm_debug="-g -F dwarf"
+            if enabled x86_64; then
+                case "$objformat" in
+                    elf)   objformat=elf64 ;;
+                    win32) objformat=win64 ;;
+                esac
+            fi
+        fi
+
+        YASMFLAGS="-f $objformat $yasm_extra"
+        enabled pic               && append YASMFLAGS "-DPIC"
+        test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
+        case "$objformat" in
+            elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
+        esac
+
+        check_yasm "movbe ecx, [5]" && enable yasm ||
+            die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
+        check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
+        check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
+        check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
+        check_yasm "CPU amdnop" || disable cpunop
+    fi
+
+    case "$cpu" in
+        athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
+            disable fast_clz
+        ;;
+    esac
+
+fi
+
+check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
+
+check_ldflags -Wl,--as-needed
+check_ldflags -Wl,-z,noexecstack
+
+if check_func dlopen; then
+    ldl=
+elif check_func dlopen -ldl; then
+    ldl=-ldl
+fi
+
+decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
+decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
+frei0r_filter_extralibs='$ldl'
+frei0r_src_filter_extralibs='$ldl'
+ladspa_filter_extralibs='$ldl'
+nvenc_encoder_extralibs='$ldl'
+coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+
+if ! disabled network; then
+    check_func getaddrinfo $network_extralibs
+    check_func inet_aton $network_extralibs
+
+    check_type netdb.h "struct addrinfo"
+    check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
+    check_type poll.h "struct pollfd"
+    check_type netinet/sctp.h "struct sctp_event_subscribe"
+    check_struct "sys/socket.h" "struct msghdr" msg_flags
+    check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
+    check_type netinet/in.h "struct sockaddr_in6"
+    check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
+    check_type "sys/types.h sys/socket.h" socklen_t
+
+    # Prefer arpa/inet.h over winsock2
+    if check_header arpa/inet.h ; then
+        check_func closesocket
+    elif check_header winsock2.h ; then
+        check_func_headers winsock2.h closesocket -lws2 &&
+            network_extralibs="-lws2" ||
+        { check_func_headers winsock2.h closesocket -lws2_32 &&
+            network_extralibs="-lws2_32"; } || disable winsock2_h network
+        check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
+
+        check_type ws2tcpip.h socklen_t
+        check_type ws2tcpip.h "struct addrinfo"
+        check_type ws2tcpip.h "struct group_source_req"
+        check_type ws2tcpip.h "struct ip_mreq_source"
+        check_type ws2tcpip.h "struct ipv6_mreq"
+        check_type winsock2.h "struct pollfd"
+        check_struct winsock2.h "struct sockaddr" sa_len
+        check_type ws2tcpip.h "struct sockaddr_in6"
+        check_type ws2tcpip.h "struct sockaddr_storage"
+    else
+        disable network
+    fi
+fi
+
+check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
+check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
+check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
+check_builtin MemoryBarrier windows.h "MemoryBarrier()"
+check_builtin sarestart signal.h "SA_RESTART"
+check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
+check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
+check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
+check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
+check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
+
+case "$custom_allocator" in
+    jemalloc)
+        # jemalloc by default does not use a prefix
+        require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
+    ;;
+    tcmalloc)
+        require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
+        malloc_prefix=tc_
+    ;;
+esac
+
+check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
+check_func  ${malloc_prefix}memalign            && enable memalign
+check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
+
+check_func  access
+check_func  arc4random
+check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  fcntl
+check_func  fork
+check_func  gethrtime
+check_func  getopt
+check_func  getrusage
+check_func  gettimeofday
+check_func  isatty
+check_func  mach_absolute_time
+check_func  mkstemp
+check_func  mmap
+check_func  mprotect
+# Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
+check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  sched_getaffinity
+check_func  setrlimit
+check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
+check_func  strerror_r
+check_func  sysconf
+check_func  sysctl
+check_func  usleep
+
+check_func_headers conio.h kbhit
+check_func_headers io.h setmode
+check_func_headers lzo/lzo1x.h lzo1x_999_compress
+check_func_headers stdlib.h getenv
+check_func_headers sys/stat.h lstat
+
+check_func_headers windows.h CoTaskMemFree -lole32
+check_func_headers windows.h GetProcessAffinityMask
+check_func_headers windows.h GetProcessTimes
+check_func_headers windows.h GetSystemTimeAsFileTime
+check_func_headers windows.h MapViewOfFile
+check_func_headers windows.h PeekNamedPipe
+check_func_headers windows.h SetConsoleTextAttribute
+check_func_headers windows.h SetConsoleCtrlHandler
+check_func_headers windows.h SetDllDirectory
+check_func_headers windows.h Sleep
+check_func_headers windows.h VirtualAlloc
+check_struct windows.h "CONDITION_VARIABLE" Ptr
+check_func_headers glob.h glob
+enabled xlib &&
+    check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
+
+check_header AudioToolbox/AudioToolbox.h
+check_header direct.h
+check_header dirent.h
+check_header dlfcn.h
+check_header d3d11.h
+check_header dxva.h
+check_header dxva2api.h -D_WIN32_WINNT=0x0600
+check_header io.h
+check_header libcrystalhd/libcrystalhd_if.h
+check_header mach/mach_time.h
+check_header malloc.h
+check_header net/udplite.h
+check_header poll.h
+check_header sys/mman.h
+check_header sys/param.h
+check_header sys/resource.h
+check_header sys/select.h
+check_header sys/time.h
+check_header sys/un.h
+check_header termios.h
+check_header unistd.h
+check_header valgrind/valgrind.h
+check_header vdpau/vdpau.h
+check_header vdpau/vdpau_x11.h
+check_header VideoDecodeAcceleration/VDADecoder.h
+check_header VideoToolbox/VideoToolbox.h
+check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
+enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
+check_header windows.h
+check_header X11/extensions/XvMClib.h
+check_header asm/types.h
+
+check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
+check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
+check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
+check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
+
+check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
+
+check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
+check_type "windows.h d3d11.h" "ID3D11VideoContext"
+check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
+
+check_type "va/va.h" "VAPictureParameterBufferHEVC"
+check_type "va/va.h" "VADecPictureParameterBufferVP9"
+check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
+check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
+check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
+check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
+
+check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
+
+check_type "cuviddec.h" "CUVIDH264PICPARAMS"
+check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
+check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
+check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
+
+check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
+
+if ! disabled w32threads && ! enabled pthreads; then
+    check_func_headers "windows.h process.h" _beginthreadex &&
+        enable w32threads || disable w32threads
+    if ! enabled w32threads && enabled winrt; then
+        check_func_headers "windows.h" CreateThread &&
+            enable w32threads || disable w32threads
+    fi
+fi
+
+# check for some common methods of building with pthread support
+# do this before the optional library checks as some of them require pthreads
+if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
+    enable pthreads
+    if check_func pthread_join -pthread && check_func pthread_create -pthread; then
+        add_cflags -pthread
+        add_extralibs -pthread
+    elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
+        add_cflags -pthreads
+        add_extralibs -pthreads
+    elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
+        add_cflags -ldl -pthread
+        add_extralibs -ldl -pthread
+    elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
+        add_extralibs -lpthreadGC2
+    elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
+        :
+    elif ! check_func pthread_join && ! check_func pthread_create; then
+        disable pthreads
+    fi
+    check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
+fi
+
+
+if enabled pthreads; then
+  check_func pthread_cancel
+fi
+
+enabled pthreads &&
+    check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
+
+disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
+disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
+disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
+
+check_lib math.h sin -lm && LIBM="-lm"
+disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
+
+atan2f_args=2
+copysign_args=2
+hypot_args=2
+ldexpf_args=2
+powf_args=2
+
+for func in $MATH_FUNCS; do
+    eval check_mathfunc $func \${${func}_args:-1}
+done
+
+for func in $COMPLEX_FUNCS; do
+    eval check_complexfunc $func \${${func}_args:-1}
+done
+
+# Enable CUVID by default if CUDA is enabled
+if enabled cuda && ! disabled cuvid; then
+    enable cuvid
+fi
+
+# these are off by default, so fail if requested and not available
+enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
+enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
+                                check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
+enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
+                               { check_lib2 "dlfcn.h" dlopen -ldl; } ||
+                               die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
+enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
+                               die "ERROR: CUDA not found"; }
+enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
+                               die "ERROR: CUVID not found"; } &&
+                             { enabled cuda ||
+                               die "ERROR: CUVID requires CUDA"; }
+enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
+enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
+enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
+enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
+enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
+enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
+enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
+enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
+                               check_lib2 "dlfcn.h" dlopen -ldl; }
+enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
+enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
+enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
+enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
+enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
+enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
+                             { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
+                               die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
+enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
+enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
+enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
+enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
+                               { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
+                                 warn "using libfdk without pkg-config"; } }
+flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
+enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
+enabled fontconfig        && enable libfontconfig
+enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
+enabled libfreetype       && require_libfreetype
+enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
+enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
+enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
+                                   check_lib "${gsm_hdr}" gsm_create -lgsm && break;
+                               done || die "ERROR: libgsm not found"; }
+enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
+enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
+enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
+enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
+enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
+enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
+enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
+enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
+enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
+enabled libopencv         && { check_header opencv2/core/core_c.h &&
+                               { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
+                                 require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
+                               require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
+enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
+enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               die "ERROR: libopenjpeg not found"; }
+enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
+enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
+enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
+enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
+enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
+enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
+enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
+                               require smbclient libsmbclient.h smbc_init -lsmbclient; }
+enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
+enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
+enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
+enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
+enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
+enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
+enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
+                             { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
+                               die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
+enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
+enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
+enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
+enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
+
+enabled libvpx            && {
+    enabled libvpx_vp8_decoder && {
+        use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
+                die "ERROR: libvpx decoder version must be >=0.9.1";
+    }
+    enabled libvpx_vp8_encoder && {
+        use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
+                die "ERROR: libvpx encoder version must be >=0.9.7";
+    }
+    enabled libvpx_vp9_decoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
+                disable libvpx_vp9_decoder;
+    }
+    enabled libvpx_vp9_encoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
+                disable libvpx_vp9_encoder;
+    }
+    if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
+        die "libvpx enabled but no supported decoders found"
+    fi
+}
+
+enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
+enabled libwebp           && {
+    enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
+    enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
+enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
+                               { require libx264 x264.h x264_encoder_encode -lx264 &&
+                                 warn "using libx264 without pkg-config"; } } &&
+                             { check_cpp_condition x264.h "X264_BUILD >= 118" ||
+                               die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
+                             { check_cpp_condition x264.h "X264_MPEG2" &&
+                               enable libx262; }
+enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
+                             { check_cpp_condition x265.h "X265_BUILD >= 68" ||
+                               die "ERROR: libx265 version must be >= 68."; }
+enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
+enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
+enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
+enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
+enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
+                             { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
+                               enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
+enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
+enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
+                                { ! enabled cross_compile && {
+                                    add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
+                                    add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
+                                    check_lib interface/mmal/mmal.h mmal_port_connect ; }
+                                check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
+                               die "ERROR: mmal not found"; }
+enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
+
+enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
+enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
+                             { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
+                               die "ERROR: NVENC API version 5 or older is not supported"; } &&
+                             { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
+enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
+                               check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
+                               die "ERROR: openal not found"; } &&
+                             { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
+                               die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
+enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
+                               check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
+                               die "ERROR: opencl not found"; } &&
+                             { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
+enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
+                               check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
+                               check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
+                               check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
+                               die "ERROR: opengl not found."
+                             }
+enabled omx_rpi && enable omx
+enabled omx               && { check_header OMX_Core.h ||
+                                { ! enabled cross_compile && enabled omx_rpi && {
+                                    add_cflags -isystem/opt/vc/include/IL ; }
+                                check_header OMX_Core.h ; } ||
+                               die "ERROR: OpenMAX IL headers not found"; }
+enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
+                               die "ERROR: openssl not found"; }
+enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
+
+# libdc1394 check
+if enabled libdc1394; then
+    { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
+        enable libdc1394_2; } ||
+    { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
+        enable libdc1394_1; } ||
+    die "ERROR: No version of libdc1394 found "
+fi
+
+if enabled gcrypt; then
+    GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
+    if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
+        gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
+        gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
+        check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
+            die "ERROR: gcrypt not found"
+        add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
+    else
+        require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
+    fi
+fi
+
+if ! disabled sdl; then
+    SDL_CONFIG="${cross_prefix}sdl-config"
+    if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+        enable sdl
+    else
+        if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
+            sdl_cflags=$("${SDL_CONFIG}" --cflags)
+            sdl_libs=$("${SDL_CONFIG}" --libs)
+            check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+            enable sdl
+        elif enabled sdl ; then
+            die "ERROR: SDL not found"
+        else
+            disable sdl
+        fi
+    fi
+    if test $target_os = "mingw32"; then
+        sdl_libs="$sdl_libs -mconsole"
+    fi
+fi
+enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
+
+disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    enable securetransport; }
+
+disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
+                       check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
+
+makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
+enabled makeinfo \
+    && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
+    && enable makeinfo_html || disable makeinfo_html
+disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
+perl -v            > /dev/null 2>&1 && enable perl      || disable perl
+pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
+rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
+
+check_header linux/fb.h
+check_header linux/videodev.h
+check_header linux/videodev2.h
+check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_header sys/videoio.h
+check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
+# check that WM_CAP_DRIVER_CONNECT is defined to the proper value
+# w32api 3.12 had it defined wrong
+check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
+
+check_type "dshow.h" IBaseFilter
+
+# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
+{ check_header dev/bktr/ioctl_meteor.h &&
+  check_header dev/bktr/ioctl_bt848.h; } ||
+{ check_header machine/ioctl_meteor.h &&
+  check_header machine/ioctl_bt848.h; } ||
+{ check_header dev/video/meteor/ioctl_meteor.h &&
+  check_header dev/video/bktr/ioctl_bt848.h; } ||
+check_header dev/ic/bt8xx.h
+
+check_header sndio.h
+if check_struct sys/soundcard.h audio_buf_info bytes; then
+    enable_safe sys/soundcard.h
+else
+    check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
+    #include <sys/soundcard.h>
+    audio_buf_info abc;
+EOF
+fi
+check_header soundcard.h
+
+enabled_any alsa_indev alsa_outdev &&
+    check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
+
+enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
+    check_func jack_port_get_latency_range -ljack
+
+enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
+
+if enabled libcdio; then
+    check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    die "ERROR: No usable libcdio/cdparanoia found"
+fi
+
+enabled xlib &&
+    check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
+
+if ! disabled libxcb; then
+    check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
+        enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
+    } && disable x11grab && enable libxcb
+
+if enabled libxcb; then
+    disabled libxcb_shm || {
+        check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
+            enabled libxcb_shm && die "ERROR: libxcb_shm not found";
+        } && check_header sys/shm.h && enable libxcb_shm; }
+
+    disabled libxcb_xfixes || {
+        check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
+            enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
+        } && enable libxcb_xfixes; }
+
+    disabled libxcb_shape || {
+        check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
+            enabled libxcb_shape && die "ERROR: libxcb_shape not found";
+        } && enable libxcb_shape; }
+
+    add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
+    add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
+fi
+fi
+
+if enabled x11grab; then
+    enabled xlib || die "ERROR: Xlib not found"
+    require Xext X11/extensions/XShm.h XShmCreateImage -lXext
+    require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
+fi
+
+check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
+
+enabled dxva2api_h &&
+    check_cc <<EOF && enable dxva2api_cobj
+#define _WIN32_WINNT 0x0600
+#define COBJMACROS
+#include <windows.h>
+#include <d3d9.h>
+#include <dxva2api.h>
+int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
+EOF
+
+enabled vaapi &&
+    check_lib va/va.h vaInitialize -lva ||
+    disable vaapi
+
+enabled vaapi &&
+    check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
+    disable vaapi
+
+if enabled vaapi ; then
+    enabled xlib &&
+    check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
+    enable vaapi_x11
+
+    check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
+    enable vaapi_drm
+fi
+
+enabled vdpau &&
+    check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
+    disable vdpau
+
+enabled vdpau && enabled xlib &&
+    check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
+    enable vdpau_x11
+
+# Funny iconv installations are not unusual, so check it after all flags have been set
+disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
+
+enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
+
+# add some useful compiler flags if supported
+check_cflags -Wdeclaration-after-statement
+check_cflags -Wall
+check_cflags -Wdisabled-optimization
+check_cflags -Wpointer-arith
+check_cflags -Wredundant-decls
+check_cflags -Wwrite-strings
+check_cflags -Wtype-limits
+check_cflags -Wundef
+check_cflags -Wmissing-prototypes
+check_cflags -Wno-pointer-to-int-cast
+check_cflags -Wstrict-prototypes
+check_cflags -Wempty-body
+enabled extra_warnings && check_cflags -Winline
+enabled extra_warnings && check_cflags -Wcast-qual
+
+check_disable_warning(){
+    warning_flag=-W${1#-Wno-}
+    test_cflags $warning_flag && add_cflags $1
+}
+
+check_disable_warning -Wno-parentheses
+check_disable_warning -Wno-switch
+check_disable_warning -Wno-format-zero-length
+check_disable_warning -Wno-pointer-sign
+check_disable_warning -Wno-unused-const-variable
+
+# add some linker flags
+check_ldflags -Wl,--warn-common
+check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
+enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
+enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
+test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
+
+# add some strip flags
+# -wN '..@*' is more selective than -x, but not available everywhere.
+check_stripflags -wN \'..@*\' || check_stripflags -x
+
+enabled neon_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert ||
+    disable neon_clobber_test
+
+enabled xmm_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert         \
+                  -Wl,--wrap,sws_scale ||
+    disable xmm_clobber_test
+
+echo "X { local: *; };" > $TMPV
+if test_ldflags -Wl,--version-script,$TMPV; then
+    append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
+elif test_ldflags -Wl,-M,$TMPV; then
+    append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
+fi
+
+check_cc <<EOF && enable symver_asm_label
+void ff_foo(void) __asm__ ("av_foo@VERSION");
+void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
+EOF
+    check_cc <<EOF && enable symver_gnu_asm
+__asm__(".symver ff_foo,av_foo@VERSION");
+void ff_foo(void) {}
+EOF
+
+if [ -z "$optflags" ]; then
+    if enabled small; then
+        optflags=$cflags_size
+    elif enabled optimizations; then
+        optflags=$cflags_speed
+    else
+        optflags=$cflags_noopt
+    fi
+fi
+
+check_optflags(){
+    check_cflags "$@"
+    enabled lto && check_ldflags "$@"
+}
+
+
+if enabled lto; then
+    test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
+    check_cflags  -flto
+    check_ldflags -flto $cpuflags
+    disable inline_asm_direct_symbol_refs
+fi
+
+check_optflags $optflags
+check_optflags -fno-math-errno
+check_optflags -fno-signed-zeros
+
+enabled ftrapv && check_cflags -ftrapv
+
+check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
+int x;
+EOF
+
+
+if enabled icc; then
+    # Just warnings, no remarks
+    check_cflags -w1
+    # -wd: Disable following warnings
+    # 144, 167, 556: -Wno-pointer-sign
+    # 188: enumerated type mixed with another type
+    # 1292: attribute "foo" ignored
+    # 1419: external declaration in primary source file
+    # 10006: ignoring unknown option -fno-signed-zeros
+    # 10148: ignoring unknown option -Wno-parentheses
+    # 10156: ignoring option '-W'; no argument required
+    # 13200: No EMMS instruction before call to function
+    # 13203: No EMMS instruction before return from function
+    check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
+    # 11030: Warning unknown option --as-needed
+    # 10156: ignoring option '-export'; no argument required
+    check_ldflags -wd10156,11030
+    # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
+    enable ebp_available
+    # The test above does not test linking
+    enabled lto && disable symver_asm_label
+    if enabled x86_32; then
+        icc_version=$($cc -dumpversion)
+        test ${icc_version%%.*} -ge 11 &&
+            check_cflags -falign-stack=maintain-16-byte ||
+            disable aligned_stack
+    fi
+elif enabled ccc; then
+    # disable some annoying warnings
+    add_cflags -msg_disable bitnotint
+    add_cflags -msg_disable mixfuncvoid
+    add_cflags -msg_disable nonstandcast
+    add_cflags -msg_disable unsupieee
+elif enabled gcc; then
+    check_optflags -fno-tree-vectorize
+    check_cflags -Werror=format-security
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+    check_cflags -Werror=vla
+    check_cflags -Wformat
+    check_cflags -fdiagnostics-color=auto
+    enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
+elif enabled llvm_gcc; then
+    check_cflags -mllvm -stack-alignment=16
+elif enabled clang; then
+    check_cflags -mllvm -stack-alignment=16
+    check_cflags -Qunused-arguments
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+elif enabled cparser; then
+    add_cflags -Wno-missing-variable-declarations
+    add_cflags -Wno-empty-statement
+elif enabled armcc; then
+    add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
+    # 2523: use of inline assembly is deprecated
+    add_cflags -W${armcc_opt},--diag_suppress=2523
+    add_cflags -W${armcc_opt},--diag_suppress=1207
+    add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
+    add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
+    add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
+elif enabled tms470; then
+    add_cflags -pds=824 -pds=837
+    disable inline_asm
+elif enabled pathscale; then
+    add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
+elif enabled_any msvc icl; then
+    enabled x86_32 && disable aligned_stack
+    enabled_all x86_32 debug && add_cflags -Oy-
+    enabled debug && add_ldflags -debug
+    enable pragma_deprecated
+    if enabled icl; then
+        # -Qansi-alias is basically -fstrict-aliasing, but does not work
+        # (correctly) on icl 13.x.
+        check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
+            add_cflags -Qansi-alias
+        # Some inline asm is not compilable in debug
+        if enabled debug; then
+            disable ebp_available
+            disable ebx_available
+        fi
+    fi
+    # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
+    check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
+    # The CRT headers contain __declspec(restrict) in a few places, but if redefining
+    # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
+    # (as it ends up if the restrict redefine is done before including stdlib.h), while
+    # MSVC 2013 and newer can handle it fine.
+    # If this declspec fails, force including stdlib.h before the restrict redefinition
+    # happens in config.h.
+    if [ $_restrict != restrict ]; then
+        check_cc <<EOF || add_cflags -FIstdlib.h
+__declspec($_restrict) void* foo(int);
+EOF
+    fi
+    check_func strtoll || add_cflags -Dstrtoll=_strtoi64
+fi
+
+for pfx in "" host_; do
+    varname=${pfx%_}cc_type
+    eval "type=\$$varname"
+    if [ $type = "msvc" ]; then
+        check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
+static inline int foo(int a) { return a; }
+EOF
+    fi
+done
+
+case $as_type in
+    clang)
+        add_asflags -Qunused-arguments
+    ;;
+esac
+
+case $ld_type in
+    clang)
+        check_ldflags -Qunused-arguments
+    ;;
+esac
+
+case $target_os in
+    osf1)
+        enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
+    ;;
+    plan9)
+        add_cppflags -Dmain=plan9_main
+    ;;
+esac
+
+enable frame_thread_encoder
+
+enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
+
+check_deps $CONFIG_LIST       \
+           $CONFIG_EXTRA      \
+           $HAVE_LIST         \
+           $ALL_COMPONENTS    \
+
+enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
+
+
+if test $target_os = "haiku"; then
+    disable memalign
+    disable posix_memalign
+fi
+
+enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
+    prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
+    enable dxva2_lib
+
+! enabled_any memalign posix_memalign aligned_malloc &&
+    enabled simd_align_16 && enable memalign_hack
+
+# add_dep lib dep
+# -> enable ${lib}_deps_${dep}
+# -> add $dep to ${lib}_deps only once
+add_dep() {
+    lib=$1
+    dep=$2
+    enabled "${lib}_deps_${dep}" && return 0
+    enable  "${lib}_deps_${dep}"
+    prepend "${lib}_deps" $dep
+}
+
+# merge deps lib components
+# merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
+merge_deps() {
+    lib=$1
+    shift
+    for comp in $*; do
+        enabled $comp || continue
+        eval "dep=\"\$${comp}_deps\""
+        for d in $dep; do
+            add_dep $lib $d
+        done
+    done
+}
+
+merge_deps libavfilter $FILTER_LIST
+
+map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
+
+for thread in $THREADS_LIST; do
+    if enabled $thread; then
+        test -n "$thread_type" &&
+            die "ERROR: Only one thread type must be selected." ||
+            thread_type="$thread"
+    fi
+done
+
+enabled zlib && add_cppflags -DZLIB_CONST
+
+# conditional library dependencies, in linking order
+enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
+enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
+enabled aresample_filter    && prepend avfilter_deps "swresample"
+enabled asyncts_filter      && prepend avfilter_deps "avresample"
+enabled atempo_filter       && prepend avfilter_deps "avcodec"
+enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
+enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
+enabled elbg_filter         && prepend avfilter_deps "avcodec"
+enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
+enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
+enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
+enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
+enabled pan_filter          && prepend avfilter_deps "swresample"
+enabled pp_filter           && prepend avfilter_deps "postproc"
+enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
+enabled resample_filter && prepend avfilter_deps "avresample"
+enabled sab_filter          && prepend avfilter_deps "swscale"
+enabled scale_filter    && prepend avfilter_deps "swscale"
+enabled scale2ref_filter    && prepend avfilter_deps "swscale"
+enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
+enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
+enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
+enabled showspectrum_filter && prepend avfilter_deps "avcodec"
+enabled smartblur_filter    && prepend avfilter_deps "swscale"
+enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
+enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
+enabled uspp_filter         && prepend avfilter_deps "avcodec"
+
+enabled lavfi_indev         && prepend avdevice_deps "avfilter"
+
+enabled opus_decoder    && prepend avcodec_deps "swresample"
+
+expand_deps(){
+    lib_deps=${1}_deps
+    eval "deps=\$$lib_deps"
+    append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
+    unique $lib_deps
+}
+
+#we have to remove gpl from the deps here as some code assumes all lib deps are libs
+postproc_deps="$(filter_out 'gpl' $postproc_deps)"
+
+map 'expand_deps $v' $LIBRARY_LIST
+
+echo "install prefix            $prefix"
+echo "source path               $source_path"
+echo "C compiler                $cc"
+echo "C library                 $libc_type"
+if test "$host_cc" != "$cc"; then
+    echo "host C compiler           $host_cc"
+    echo "host C library            $host_libc_type"
+fi
+echo "ARCH                      $arch ($cpu)"
+if test "$build_suffix" != ""; then
+    echo "build suffix              $build_suffix"
+fi
+if test "$progs_suffix" != ""; then
+    echo "progs suffix              $progs_suffix"
+fi
+if test "$extra_version" != ""; then
+    echo "version string suffix     $extra_version"
+fi
+echo "big-endian                ${bigendian-no}"
+echo "runtime cpu detection     ${runtime_cpudetect-no}"
+if enabled x86; then
+    echo "${yasmexe}                      ${yasm-no}"
+    echo "MMX enabled               ${mmx-no}"
+    echo "MMXEXT enabled            ${mmxext-no}"
+    echo "3DNow! enabled            ${amd3dnow-no}"
+    echo "3DNow! extended enabled   ${amd3dnowext-no}"
+    echo "SSE enabled               ${sse-no}"
+    echo "SSSE3 enabled             ${ssse3-no}"
+    echo "AESNI enabled             ${aesni-no}"
+    echo "AVX enabled               ${avx-no}"
+    echo "XOP enabled               ${xop-no}"
+    echo "FMA3 enabled              ${fma3-no}"
+    echo "FMA4 enabled              ${fma4-no}"
+    echo "i686 features enabled     ${i686-no}"
+    echo "CMOV is fast              ${fast_cmov-no}"
+    echo "EBX available             ${ebx_available-no}"
+    echo "EBP available             ${ebp_available-no}"
+fi
+if enabled aarch64; then
+    echo "NEON enabled              ${neon-no}"
+    echo "VFP enabled               ${vfp-no}"
+fi
+if enabled arm; then
+    echo "ARMv5TE enabled           ${armv5te-no}"
+    echo "ARMv6 enabled             ${armv6-no}"
+    echo "ARMv6T2 enabled           ${armv6t2-no}"
+    echo "VFP enabled               ${vfp-no}"
+    echo "NEON enabled              ${neon-no}"
+    echo "THUMB enabled             ${thumb-no}"
+fi
+if enabled mips; then
+    echo "MIPS FPU enabled          ${mipsfpu-no}"
+    echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
+    echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
+    echo "MIPS MSA enabled          ${msa-no}"
+    echo "LOONGSON MMI enabled      ${mmi-no}"
+fi
+if enabled ppc; then
+    echo "AltiVec enabled           ${altivec-no}"
+    echo "VSX enabled               ${vsx-no}"
+    echo "POWER8 enabled            ${power8-no}"
+    echo "PPC 4xx optimizations     ${ppc4xx-no}"
+    echo "dcbzl available           ${dcbzl-no}"
+fi
+echo "debug symbols             ${debug-no}"
+echo "strip symbols             ${stripping-no}"
+echo "optimize for size         ${small-no}"
+echo "optimizations             ${optimizations-no}"
+echo "static                    ${static-no}"
+echo "shared                    ${shared-no}"
+echo "postprocessing support    ${postproc-no}"
+echo "new filter support        ${avfilter-no}"
+echo "network support           ${network-no}"
+echo "threading support         ${thread_type-no}"
+echo "safe bitstream reader     ${safe_bitstream_reader-no}"
+echo "SDL support               ${sdl-no}"
+echo "opencl enabled            ${opencl-no}"
+echo "JNI support               ${jni-no}"
+echo "texi2html enabled         ${texi2html-no}"
+echo "perl enabled              ${perl-no}"
+echo "pod2man enabled           ${pod2man-no}"
+echo "makeinfo enabled          ${makeinfo-no}"
+echo "makeinfo supports HTML    ${makeinfo_html-no}"
+test -n "$random_seed" &&
+    echo "random seed               ${random_seed}"
+echo
+
+echo "Enabled programs:"
+print_enabled '' $PROGRAM_LIST | print_in_columns
+echo
+
+echo "External libraries:"
+print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "External libraries providing hardware acceleration:"
+print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "Libraries:"
+print_enabled '' $LIBRARY_LIST | print_in_columns
+echo
+
+for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
+    echo "Enabled ${type}s:"
+    eval list=\$$(toupper $type)_LIST
+    print_enabled '_*' $list | print_in_columns
+    echo
+done
+
+license="LGPL version 2.1 or later"
+if enabled nonfree; then
+    license="nonfree and unredistributable"
+elif enabled gplv3; then
+    license="GPL version 3 or later"
+elif enabled lgplv3; then
+    license="LGPL version 3 or later"
+elif enabled gpl; then
+    license="GPL version 2 or later"
+fi
+
+echo "License: $license"
+
+echo "Creating config.mak, config.h, and doc/config.texi..."
+
+test -e Makefile || echo "include $source_path/Makefile" > Makefile
+
+enabled stripping || strip="echo skipping strip"
+
+config_files="$TMPH config.mak doc/config.texi"
+
+cat > config.mak <<EOF
+# Automatically generated by configure - do not modify!
+ifndef FFMPEG_CONFIG_MAK
+FFMPEG_CONFIG_MAK=1
+FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
+prefix=$prefix
+LIBDIR=\$(DESTDIR)$libdir
+SHLIBDIR=\$(DESTDIR)$shlibdir
+INCDIR=\$(DESTDIR)$incdir
+BINDIR=\$(DESTDIR)$bindir
+DATADIR=\$(DESTDIR)$datadir
+DOCDIR=\$(DESTDIR)$docdir
+MANDIR=\$(DESTDIR)$mandir
+PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
+INSTALL_NAME_DIR=$install_name_dir
+SRC_PATH=$source_path
+SRC_LINK=$source_link
+ifndef MAIN_MAKEFILE
+SRC_PATH:=\$(SRC_PATH:.%=..%)
+endif
+CC_IDENT=$cc_ident
+ARCH=$arch
+INTRINSICS=$intrinsics
+CC=$cc
+CXX=$cxx
+AS=$as
+OBJCC=$objcc
+LD=$ld
+DEPCC=$dep_cc
+DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
+DEPAS=$as
+DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
+YASM=$yasmexe
+DEPYASM=$yasmexe
+AR=$ar
+ARFLAGS=$arflags
+AR_O=$ar_o
+RANLIB=$ranlib
+STRIP=$strip
+CP=cp -p
+LN_S=$ln_s
+CPPFLAGS=$CPPFLAGS
+CFLAGS=$CFLAGS
+CXXFLAGS=$CXXFLAGS
+OBJCFLAGS=$OBJCFLAGS
+ASFLAGS=$ASFLAGS
+AS_C=$AS_C
+AS_O=$AS_O
+OBJCC_C=$OBJCC_C
+OBJCC_E=$OBJCC_E
+OBJCC_O=$OBJCC_O
+CC_C=$CC_C
+CC_E=$CC_E
+CC_O=$CC_O
+CXX_C=$CXX_C
+CXX_O=$CXX_O
+LD_O=$LD_O
+LD_LIB=$LD_LIB
+LD_PATH=$LD_PATH
+DLLTOOL=$dlltool
+WINDRES=$windres
+DEPWINDRES=$dep_cc
+DOXYGEN=$doxygen
+LDFLAGS=$LDFLAGS
+LDEXEFLAGS=$LDEXEFLAGS
+LDLIBFLAGS=$LDLIBFLAGS
+SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
+ASMSTRIPFLAGS=$ASMSTRIPFLAGS
+YASMFLAGS=$YASMFLAGS
+BUILDSUF=$build_suffix
+PROGSSUF=$progs_suffix
+FULLNAME=$FULLNAME
+LIBPREF=$LIBPREF
+LIBSUF=$LIBSUF
+LIBNAME=$LIBNAME
+SLIBPREF=$SLIBPREF
+SLIBSUF=$SLIBSUF
+EXESUF=$EXESUF
+EXTRA_VERSION=$extra_version
+CCDEP=$CCDEP
+CXXDEP=$CXXDEP
+CCDEP_FLAGS=$CCDEP_FLAGS
+ASDEP=$ASDEP
+ASDEP_FLAGS=$ASDEP_FLAGS
+CC_DEPFLAGS=$CC_DEPFLAGS
+AS_DEPFLAGS=$AS_DEPFLAGS
+HOSTCC=$host_cc
+HOSTLD=$host_ld
+HOSTCFLAGS=$host_cflags
+HOSTCPPFLAGS=$host_cppflags
+HOSTEXESUF=$HOSTEXESUF
+HOSTLDFLAGS=$host_ldflags
+HOSTLIBS=$host_libs
+DEPHOSTCC=$host_cc
+DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
+HOSTCCDEP=$HOSTCCDEP
+HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
+HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
+HOSTCC_C=$HOSTCC_C
+HOSTCC_O=$HOSTCC_O
+HOSTLD_O=$HOSTLD_O
+TARGET_EXEC=$target_exec $target_exec_args
+TARGET_PATH=$target_path
+TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
+CFLAGS-ffplay=$sdl_cflags
+ZLIB=$($ldflags_filter -lz)
+LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
+EXTRALIBS=$extralibs
+COMPAT_OBJS=$compat_objs
+EXEOBJS=$exeobjs
+INSTALL=$install
+LIBTARGET=${LIBTARGET}
+SLIBNAME=${SLIBNAME}
+SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
+SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
+SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
+SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
+SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
+SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
+SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
+SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
+SAMPLES:=${samples:-\$(FATE_SAMPLES)}
+NOREDZONE_FLAGS=$noredzone_flags
+EOF
+
+get_version(){
+    lcname=lib${1}
+    name=$(toupper $lcname)
+    file=$source_path/$lcname/version.h
+    eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
+    enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
+    eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
+    eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
+    eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
+    eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
+}
+
+map 'get_version $v' $LIBRARY_LIST
+
+map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
+
+print_program_libs(){
+    eval "program_libs=\$${1}_libs"
+    eval echo "LIBS-${1}=${program_libs}" >> config.mak
+}
+
+map 'print_program_libs $v' $PROGRAM_LIST
+
+cat > $TMPH <<EOF
+/* Automatically generated by configure - do not modify! */
+#ifndef FFMPEG_CONFIG_H
+#define FFMPEG_CONFIG_H
+#define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
+#define FFMPEG_LICENSE "$(c_escape $license)"
+#define CONFIG_THIS_YEAR 2016
+#define FFMPEG_DATADIR "$(eval c_escape $datadir)"
+#define AVCONV_DATADIR "$(eval c_escape $datadir)"
+#define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
+#define av_restrict $_restrict
+#define EXTERN_PREFIX "${extern_prefix}"
+#define EXTERN_ASM ${extern_prefix}
+#define BUILDSUF "$build_suffix"
+#define SLIBSUF "$SLIBSUF"
+#define HAVE_MMX2 HAVE_MMXEXT
+#define SWS_MAX_FILTER_SIZE $sws_max_filter_size
+EOF
+
+test -n "$assert_level" &&
+    echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
+
+test -n "$malloc_prefix" &&
+    echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
+
+if enabled yasm; then
+    append config_files $TMPASM
+    printf '' >$TMPASM
+fi
+
+enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
+
+
+mkdir -p doc
+mkdir -p tests
+mkdir -p tests/api
+echo "@c auto-generated by configure - do not modify! " > doc/config.texi
+
+print_config ARCH_   "$config_files" $ARCH_LIST
+print_config HAVE_   "$config_files" $HAVE_LIST
+print_config CONFIG_ "$config_files" $CONFIG_LIST       \
+                                     $CONFIG_EXTRA      \
+                                     $ALL_COMPONENTS    \
+
+echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
+echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
+
+# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
+cp_if_changed $TMPH config.h
+touch .config
+
+enabled yasm && cp_if_changed $TMPASM config.asm
+
+cat > $TMPH <<EOF
+/* Generated by ffconf */
+#ifndef AVUTIL_AVCONFIG_H
+#define AVUTIL_AVCONFIG_H
+EOF
+
+print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
+
+echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
+
+cp_if_changed $TMPH libavutil/avconfig.h
+
+if test -n "$WARNINGS"; then
+    printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
+    enabled fatal_warnings && exit 1
+fi
+
+# generate the lists of enabled components
+print_enabled_components(){
+    file=$1
+    struct_name=$2
+    name=$3
+    shift 3
+    echo "static const $struct_name *$name[] = {" > $TMPH
+    for c in $*; do
+        enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
+    done
+    echo "    NULL };" >> $TMPH
+    cp_if_changed $TMPH $file
+}
+
+print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
+print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
+
+# build pkg-config files
+
+lib_version(){
+    eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
+}
+
+pkgconfig_generate(){
+    name=$1
+    shortname=${name#lib}${build_suffix}
+    comment=$2
+    version=$3
+    libs=$4
+    requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
+    requires=${requires%, }
+    enabled ${name#lib} || return 0
+    mkdir -p $name
+    cat <<EOF > $name/$name${build_suffix}.pc
+prefix=$prefix
+exec_prefix=\${prefix}
+libdir=$libdir
+includedir=$incdir
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $(enabled shared || echo $requires)
+Requires.private: $(enabled shared && echo $requires)
+Conflicts:
+Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
+Libs.private: $(enabled shared && echo $libs)
+Cflags: -I\${includedir}
+EOF
+
+mkdir -p doc/examples/pc-uninstalled
+includedir=${source_path}
+[ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
+    cat <<EOF > doc/examples/pc-uninstalled/$name.pc
+prefix=
+exec_prefix=
+libdir=\${pcfiledir}/../../../$name
+includedir=${includedir}
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $requires
+Conflicts:
+Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
+Cflags: -I\${includedir}
+EOF
+}
+
+pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
+pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
+pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
+pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
+pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
+pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
+pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
+pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
+pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/file.list b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/file.list
new file mode 100644
index 000000000..11229e678
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-openjpeg-patch/file.list
@@ -0,0 +1 @@
+ffmpeg-3.1.4/configure
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/create.patch.sh b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/create.patch.sh
new file mode 100755
index 000000000..8ac812e75
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/create.patch.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+VERSION=3.1.4
+
+tar --files-from=file.list -xJvf ../ffmpeg-$VERSION.tar.xz
+mv ffmpeg-$VERSION ffmpeg-$VERSION-orig
+
+cp -rf ./ffmpeg-$VERSION-new ./ffmpeg-$VERSION
+
+diff -b --unified -Nr  ffmpeg-$VERSION-orig  ffmpeg-$VERSION > ffmpeg-$VERSION-pthreads.patch
+
+mv ffmpeg-$VERSION-pthreads.patch ../patches
+
+rm -rf ./ffmpeg-$VERSION
+rm -rf ./ffmpeg-$VERSION-orig
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/ffmpeg-3.1.4-new/configure b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/ffmpeg-3.1.4-new/configure
new file mode 100755
index 000000000..46ca51513
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/ffmpeg-3.1.4-new/configure
@@ -0,0 +1,6762 @@
+#!/bin/sh
+#
+# FFmpeg configure script
+#
+# Copyright (c) 2000-2002 Fabrice Bellard
+# Copyright (c) 2005-2008 Diego Biurrun
+# Copyright (c) 2005-2008 Mans Rullgard
+#
+
+# Prevent locale nonsense from breaking basic text processing.
+LC_ALL=C
+export LC_ALL
+
+# make sure we are running under a compatible shell
+# try to make this part work with most shells
+
+try_exec(){
+    echo "Trying shell $1"
+    type "$1" > /dev/null 2>&1 && exec "$@"
+}
+
+unset foo
+(: ${foo%%bar}) 2> /dev/null
+E1="$?"
+
+(: ${foo?}) 2> /dev/null
+E2="$?"
+
+if test "$E1" != 0 || test "$E2" = 0; then
+    echo "Broken shell detected.  Trying alternatives."
+    export FF_CONF_EXEC
+    if test "0$FF_CONF_EXEC" -lt 1; then
+        FF_CONF_EXEC=1
+        try_exec bash "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 2; then
+        FF_CONF_EXEC=2
+        try_exec ksh "$0" "$@"
+    fi
+    if test "0$FF_CONF_EXEC" -lt 3; then
+        FF_CONF_EXEC=3
+        try_exec /usr/xpg4/bin/sh "$0" "$@"
+    fi
+    echo "No compatible shell script interpreter found."
+    echo "This configure script requires a POSIX-compatible shell"
+    echo "such as bash or ksh."
+    echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
+    echo "Instead, install a working POSIX-compatible shell."
+    echo "Disabling this configure test will create a broken FFmpeg."
+    if test "$BASH_VERSION" = '2.04.0(1)-release'; then
+        echo "This bash version ($BASH_VERSION) is broken on your platform."
+        echo "Upgrade to a later version if available."
+    fi
+    exit 1
+fi
+
+test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
+
+show_help(){
+    cat <<EOF
+Usage: configure [options]
+Options: [defaults in brackets after descriptions]
+
+Help options:
+  --help                   print this message
+  --list-decoders          show all available decoders
+  --list-encoders          show all available encoders
+  --list-hwaccels          show all available hardware accelerators
+  --list-demuxers          show all available demuxers
+  --list-muxers            show all available muxers
+  --list-parsers           show all available parsers
+  --list-protocols         show all available protocols
+  --list-bsfs              show all available bitstream filters
+  --list-indevs            show all available input devices
+  --list-outdevs           show all available output devices
+  --list-filters           show all available filters
+
+Standard options:
+  --logfile=FILE           log tests and output to FILE [config.log]
+  --disable-logging        do not log configure debug information
+  --fatal-warnings         fail if any configure warning is generated
+  --prefix=PREFIX          install in PREFIX [$prefix]
+  --bindir=DIR             install binaries in DIR [PREFIX/bin]
+  --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
+  --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
+  --libdir=DIR             install libs in DIR [PREFIX/lib]
+  --shlibdir=DIR           install shared libs in DIR [LIBDIR]
+  --incdir=DIR             install includes in DIR [PREFIX/include]
+  --mandir=DIR             install man page in DIR [PREFIX/share/man]
+  --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
+  --enable-rpath           use rpath to allow installing libraries in paths
+                           not part of the dynamic linker search path
+                           use rpath when linking programs [USE WITH CARE]
+  --install-name-dir=DIR   Darwin directory name for installed targets
+
+Licensing options:
+  --enable-gpl             allow use of GPL code, the resulting libs
+                           and binaries will be under GPL [no]
+  --enable-version3        upgrade (L)GPL to version 3 [no]
+  --enable-nonfree         allow use of nonfree code, the resulting libs
+                           and binaries will be unredistributable [no]
+
+Configuration options:
+  --disable-static         do not build static libraries [no]
+  --enable-shared          build shared libraries [no]
+  --enable-small           optimize for size instead of speed
+  --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
+  --enable-gray            enable full grayscale support (slower color)
+  --disable-swscale-alpha  disable alpha channel support in swscale
+  --disable-all            disable building components, libraries and programs
+  --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
+  --enable-raise-major     increase major version numbers in sonames [no]
+
+Program options:
+  --disable-programs       do not build command line programs
+  --disable-ffmpeg         disable ffmpeg build
+  --disable-ffplay         disable ffplay build
+  --disable-ffprobe        disable ffprobe build
+  --disable-ffserver       disable ffserver build
+
+Documentation options:
+  --disable-doc            do not build documentation
+  --disable-htmlpages      do not build HTML documentation pages
+  --disable-manpages       do not build man documentation pages
+  --disable-podpages       do not build POD documentation pages
+  --disable-txtpages       do not build text documentation pages
+
+Component options:
+  --disable-avdevice       disable libavdevice build
+  --disable-avcodec        disable libavcodec build
+  --disable-avformat       disable libavformat build
+  --disable-swresample     disable libswresample build
+  --disable-swscale        disable libswscale build
+  --disable-postproc       disable libpostproc build
+  --disable-avfilter       disable libavfilter build
+  --enable-avresample      enable libavresample build [no]
+  --disable-pthreads       disable pthreads [autodetect]
+  --disable-w32threads     disable Win32 threads [autodetect]
+  --disable-os2threads     disable OS/2 threads [autodetect]
+  --disable-network        disable network support [no]
+  --disable-dct            disable DCT code
+  --disable-dwt            disable DWT code
+  --disable-error-resilience disable error resilience code
+  --disable-lsp            disable LSP code
+  --disable-lzo            disable LZO decoder code
+  --disable-mdct           disable MDCT code
+  --disable-rdft           disable RDFT code
+  --disable-fft            disable FFT code
+  --disable-faan           disable floating point AAN (I)DCT code
+  --disable-pixelutils     disable pixel utils in libavutil
+
+Individual component options:
+  --disable-everything     disable all components listed below
+  --disable-encoder=NAME   disable encoder NAME
+  --enable-encoder=NAME    enable encoder NAME
+  --disable-encoders       disable all encoders
+  --disable-decoder=NAME   disable decoder NAME
+  --enable-decoder=NAME    enable decoder NAME
+  --disable-decoders       disable all decoders
+  --disable-hwaccel=NAME   disable hwaccel NAME
+  --enable-hwaccel=NAME    enable hwaccel NAME
+  --disable-hwaccels       disable all hwaccels
+  --disable-muxer=NAME     disable muxer NAME
+  --enable-muxer=NAME      enable muxer NAME
+  --disable-muxers         disable all muxers
+  --disable-demuxer=NAME   disable demuxer NAME
+  --enable-demuxer=NAME    enable demuxer NAME
+  --disable-demuxers       disable all demuxers
+  --enable-parser=NAME     enable parser NAME
+  --disable-parser=NAME    disable parser NAME
+  --disable-parsers        disable all parsers
+  --enable-bsf=NAME        enable bitstream filter NAME
+  --disable-bsf=NAME       disable bitstream filter NAME
+  --disable-bsfs           disable all bitstream filters
+  --enable-protocol=NAME   enable protocol NAME
+  --disable-protocol=NAME  disable protocol NAME
+  --disable-protocols      disable all protocols
+  --enable-indev=NAME      enable input device NAME
+  --disable-indev=NAME     disable input device NAME
+  --disable-indevs         disable input devices
+  --enable-outdev=NAME     enable output device NAME
+  --disable-outdev=NAME    disable output device NAME
+  --disable-outdevs        disable output devices
+  --disable-devices        disable all devices
+  --enable-filter=NAME     enable filter NAME
+  --disable-filter=NAME    disable filter NAME
+  --disable-filters        disable all filters
+
+External library support:
+
+  Using any of the following switches will allow FFmpeg to link to the
+  corresponding external library. All the components depending on that library
+  will become enabled, if all their other dependencies are met and they are not
+  explicitly disabled. E.g. --enable-libwavpack will enable linking to
+  libwavpack and allow the libwavpack encoder to be built, unless it is
+  specifically disabled with --disable-encoder=libwavpack.
+
+  Note that only the system libraries are auto-detected. All the other external
+  libraries must be explicitly enabled.
+
+  Also note that the following help text describes the purpose of the libraries
+  themselves, not all their features will necessarily be usable by FFmpeg.
+
+  --enable-avisynth        enable reading of AviSynth script files [no]
+  --disable-bzlib          disable bzlib [autodetect]
+  --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
+  --enable-frei0r          enable frei0r video filtering [no]
+  --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
+                           if openssl, librtmp or gmp is not used [no]
+  --enable-gmp             enable gmp, needed for rtmp(t)e support
+                           if openssl or librtmp is not used [no]
+  --enable-gnutls          enable gnutls, needed for https support
+                           if openssl is not used [no]
+  --disable-iconv          disable iconv [autodetect]
+  --enable-jni             enable JNI support [no]
+  --enable-ladspa          enable LADSPA audio filtering [no]
+  --enable-libass          enable libass subtitles rendering,
+                           needed for subtitles and ass filter [no]
+  --enable-libbluray       enable BluRay reading using libbluray [no]
+  --enable-libbs2b         enable bs2b DSP library [no]
+  --enable-libcaca         enable textual display using libcaca [no]
+  --enable-libcelt         enable CELT decoding via libcelt [no]
+  --enable-libcdio         enable audio CD grabbing with libcdio [no]
+  --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
+                           and libraw1394 [no]
+  --enable-libebur128      enable libebur128 for EBU R128 measurement,
+                           needed for loudnorm filter [no]
+  --enable-libfaac         enable AAC encoding via libfaac [no]
+  --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
+  --enable-libflite        enable flite (voice synthesis) support via libflite [no]
+  --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
+  --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
+  --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
+  --enable-libgme          enable Game Music Emu via libgme [no]
+  --enable-libgsm          enable GSM de/encoding via libgsm [no]
+  --enable-libiec61883     enable iec61883 via libiec61883 [no]
+  --enable-libilbc         enable iLBC de/encoding via libilbc [no]
+  --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
+  --enable-libmodplug      enable ModPlug via libmodplug [no]
+  --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
+  --enable-libnut          enable NUT (de)muxing via libnut,
+                           native (de)muxer exists [no]
+  --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
+  --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
+  --enable-libopencv       enable video filtering via libopencv [no]
+  --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
+  --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
+  --enable-libopus         enable Opus de/encoding via libopus [no]
+  --enable-libpulse        enable Pulseaudio input via libpulse [no]
+  --enable-librubberband   enable rubberband needed for rubberband filter [no]
+  --enable-librtmp         enable RTMP[E] support via librtmp [no]
+  --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
+  --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
+  --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
+  --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
+  --enable-libsoxr         enable Include libsoxr resampling [no]
+  --enable-libspeex        enable Speex de/encoding via libspeex [no]
+  --enable-libssh          enable SFTP protocol via libssh [no]
+  --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
+  --enable-libtheora       enable Theora encoding via libtheora [no]
+  --enable-libtwolame      enable MP2 encoding via libtwolame [no]
+  --enable-libv4l2         enable libv4l2/v4l-utils [no]
+  --enable-libvidstab      enable video stabilization using vid.stab [no]
+  --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
+  --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
+                           native implementation exists [no]
+  --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
+  --enable-libwavpack      enable wavpack encoding via libwavpack [no]
+  --enable-libwebp         enable WebP encoding via libwebp [no]
+  --enable-libx264         enable H.264 encoding via x264 [no]
+  --enable-libx265         enable HEVC encoding via x265 [no]
+  --enable-libxavs         enable AVS encoding via xavs [no]
+  --enable-libxcb          enable X11 grabbing using XCB [autodetect]
+  --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
+  --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
+  --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
+  --enable-libxvid         enable Xvid encoding via xvidcore,
+                           native MPEG-4/Xvid encoder exists [no]
+  --enable-libzimg         enable z.lib, needed for zscale filter [no]
+  --enable-libzmq          enable message passing via libzmq [no]
+  --enable-libzvbi         enable teletext support via libzvbi [no]
+  --disable-lzma           disable lzma [autodetect]
+  --enable-decklink        enable Blackmagic DeckLink I/O support [no]
+  --enable-mediacodec      enable Android MediaCodec support [no]
+  --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
+  --enable-openal          enable OpenAL 1.1 capture support [no]
+  --enable-opencl          enable OpenCL code
+  --enable-opengl          enable OpenGL rendering [no]
+  --enable-openssl         enable openssl, needed for https support
+                           if gnutls is not used [no]
+  --disable-schannel       disable SChannel SSP, needed for TLS support on
+                           Windows if openssl and gnutls are not used [autodetect]
+  --disable-sdl            disable sdl [autodetect]
+  --disable-securetransport disable Secure Transport, needed for TLS support
+                           on OSX if openssl and gnutls are not used [autodetect]
+  --enable-x11grab         enable X11 grabbing (legacy) [no]
+  --disable-xlib           disable xlib [autodetect]
+  --disable-zlib           disable zlib [autodetect]
+
+  The following libraries provide various hardware acceleration features:
+  --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
+  --enable-cuda            enable dynamically linked Nvidia CUDA code [no]
+  --enable-cuvid           enable Nvidia CUVID support [autodetect]
+  --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
+  --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
+  --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
+  --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
+  --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
+  --enable-nvenc           enable Nvidia video encoding code [no]
+  --enable-omx             enable OpenMAX IL code [no]
+  --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
+  --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
+  --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
+  --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
+  --disable-videotoolbox   disable VideoToolbox code [autodetect]
+
+Toolchain options:
+  --arch=ARCH              select architecture [$arch]
+  --cpu=CPU                select the minimum required CPU (affects
+                           instruction selection, may crash on older CPUs)
+  --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
+  --progs-suffix=SUFFIX    program name suffix []
+  --enable-cross-compile   assume a cross-compiler is used
+  --sysroot=PATH           root of cross-build tree
+  --sysinclude=PATH        location of cross-build system headers
+  --target-os=OS           compiler targets OS [$target_os]
+  --target-exec=CMD        command to run executables on target
+  --target-path=DIR        path to view of build directory on target
+  --target-samples=DIR     path to samples directory on target
+  --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
+  --toolchain=NAME         set tool defaults according to NAME
+  --nm=NM                  use nm tool NM [$nm_default]
+  --ar=AR                  use archive tool AR [$ar_default]
+  --as=AS                  use assembler AS [$as_default]
+  --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
+  --strip=STRIP            use strip tool STRIP [$strip_default]
+  --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
+  --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
+  --cc=CC                  use C compiler CC [$cc_default]
+  --cxx=CXX                use C compiler CXX [$cxx_default]
+  --objcc=OCC              use ObjC compiler OCC [$cc_default]
+  --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
+  --ld=LD                  use linker LD [$ld_default]
+  --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
+  --pkg-config-flags=FLAGS pass additional flags to pkgconf []
+  --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
+  --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
+  --host-cc=HOSTCC         use host C compiler HOSTCC
+  --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
+  --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
+  --host-ld=HOSTLD         use host linker HOSTLD
+  --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
+  --host-libs=HLIBS        use libs HLIBS when linking for host
+  --host-os=OS             compiler host OS [$target_os]
+  --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
+  --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
+  --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
+  --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
+  --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
+  --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
+  --extra-libs=ELIBS       add ELIBS [$ELIBS]
+  --extra-version=STRING   version string suffix []
+  --optflags=OPTFLAGS      override optimization-related compiler flags
+  --build-suffix=SUFFIX    library name suffix []
+  --enable-pic             build position-independent code
+  --enable-thumb           compile for Thumb instruction set
+  --enable-lto             use link-time optimization
+  --env="ENV=override"     override the environment variables
+
+Advanced options (experts only):
+  --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
+  --custom-allocator=NAME  use a supported custom allocator
+  --disable-symver         disable symbol versioning
+  --enable-hardcoded-tables use hardcoded tables instead of runtime generation
+  --disable-safe-bitstream-reader
+                           disable buffer boundary checking in bitreaders
+                           (faster, but may crash)
+  --enable-memalign-hack   emulate memalign, interferes with memory debuggers
+  --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
+
+Optimization options (experts only):
+  --disable-asm            disable all assembly optimizations
+  --disable-altivec        disable AltiVec optimizations
+  --disable-vsx            disable VSX optimizations
+  --disable-power8         disable POWER8 optimizations
+  --disable-amd3dnow       disable 3DNow! optimizations
+  --disable-amd3dnowext    disable 3DNow! extended optimizations
+  --disable-mmx            disable MMX optimizations
+  --disable-mmxext         disable MMXEXT optimizations
+  --disable-sse            disable SSE optimizations
+  --disable-sse2           disable SSE2 optimizations
+  --disable-sse3           disable SSE3 optimizations
+  --disable-ssse3          disable SSSE3 optimizations
+  --disable-sse4           disable SSE4 optimizations
+  --disable-sse42          disable SSE4.2 optimizations
+  --disable-avx            disable AVX optimizations
+  --disable-xop            disable XOP optimizations
+  --disable-fma3           disable FMA3 optimizations
+  --disable-fma4           disable FMA4 optimizations
+  --disable-avx2           disable AVX2 optimizations
+  --disable-aesni          disable AESNI optimizations
+  --disable-armv5te        disable armv5te optimizations
+  --disable-armv6          disable armv6 optimizations
+  --disable-armv6t2        disable armv6t2 optimizations
+  --disable-vfp            disable VFP optimizations
+  --disable-neon           disable NEON optimizations
+  --disable-inline-asm     disable use of inline assembly
+  --disable-yasm           disable use of nasm/yasm assembly
+  --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
+  --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
+  --disable-msa            disable MSA optimizations
+  --disable-mipsfpu        disable floating point MIPS optimizations
+  --disable-mmi            disable Loongson SIMD optimizations
+  --disable-fast-unaligned consider unaligned accesses slow
+
+Developer options (useful when working on FFmpeg itself):
+  --disable-debug          disable debugging symbols
+  --enable-debug=LEVEL     set the debug level [$debuglevel]
+  --disable-optimizations  disable compiler optimizations
+  --enable-extra-warnings  enable more compiler warnings
+  --disable-stripping      disable stripping of executables and shared libraries
+  --assert-level=level     0(default), 1 or 2, amount of assertion testing,
+                           2 causes a slowdown at runtime.
+  --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
+  --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
+                           leaks and errors, using the specified valgrind binary.
+                           Cannot be combined with --target-exec
+  --enable-ftrapv          Trap arithmetic overflows
+  --samples=PATH           location of test samples for FATE, if not set use
+                           \$FATE_SAMPLES at make invocation time.
+  --enable-neon-clobber-test check NEON registers for clobbering (should be
+                           used only for debugging purposes)
+  --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
+                           should be used only for debugging purposes)
+  --enable-random          randomly enable/disable components
+  --disable-random
+  --enable-random=LIST     randomly enable/disable specific components or
+  --disable-random=LIST    component groups. LIST is a comma-separated list
+                           of NAME[:PROB] entries where NAME is a component
+                           (group) and PROB the probability associated with
+                           NAME (default 0.5).
+  --random-seed=VALUE      seed value for --enable/disable-random
+  --disable-valgrind-backtrace do not print a backtrace under Valgrind
+                           (only applies to --disable-optimizations builds)
+
+NOTE: Object files are built at the place where configure is launched.
+EOF
+  exit 0
+}
+
+quotes='""'
+if test -t 1 && which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+    if test -n "$ncolors" && test $ncolors -ge 8; then
+        bold_color=$(tput bold)
+        warn_color=$(tput setaf 3)
+        error_color=$(tput setaf 1)
+        reset_color=$(tput sgr0)
+    fi
+    # 72 used instead of 80 since that's the default of pr
+    ncols=$(tput cols)
+fi
+: ${ncols:=72}
+
+log(){
+    echo "$@" >> $logfile
+}
+
+log_file(){
+    log BEGIN $1
+    pr -n -t $1 >> $logfile
+    log END $1
+}
+
+warn(){
+    log "WARNING: $*"
+    WARNINGS="${WARNINGS}WARNING: $*\n"
+}
+
+die(){
+    log "$@"
+    echo "$error_color$bold_color$@$reset_color"
+    cat <<EOF
+
+If you think configure made a mistake, make sure you are using the latest
+version from Git.  If the latest version fails, report the problem to the
+ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
+EOF
+    if disabled logging; then
+        cat <<EOF
+Rerun configure with logging enabled (do not use --disable-logging), and
+include the log this produces with your report.
+EOF
+    else
+        cat <<EOF
+Include the log file "$logfile" produced by configure as this will help
+solve the problem.
+EOF
+    fi
+    exit 1
+}
+
+# Avoid locale weirdness, besides we really just want to translate ASCII.
+toupper(){
+    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
+}
+
+tolower(){
+    echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
+}
+
+c_escape(){
+    echo "$*" | sed 's/["\\]/\\\0/g'
+}
+
+sh_quote(){
+    v=$(echo "$1" | sed "s/'/'\\\\''/g")
+    test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
+    echo "$v"
+}
+
+cleanws(){
+    echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
+}
+
+filter(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) echo $v ;; esac"
+    done
+}
+
+filter_out(){
+    pat=$1
+    shift
+    for v; do
+        eval "case $v in $pat) ;; *) echo $v ;; esac"
+    done
+}
+
+map(){
+    m=$1
+    shift
+    for v; do eval $m; done
+}
+
+add_suffix(){
+    suffix=$1
+    shift
+    for v; do echo ${v}${suffix}; done
+}
+
+set_all(){
+    value=$1
+    shift
+    for var in $*; do
+        eval $var=$value
+    done
+}
+
+set_weak(){
+    value=$1
+    shift
+    for var; do
+        eval : \${$var:=$value}
+    done
+}
+
+sanitize_var_name(){
+    echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
+}
+
+set_safe(){
+    var=$1
+    shift
+    eval $(sanitize_var_name "$var")='$*'
+}
+
+get_safe(){
+    eval echo \$$(sanitize_var_name "$1")
+}
+
+pushvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:=0}
+        eval ${pvar}_${level}="\$$pvar"
+        eval ${pvar}_level=$(($level+1))
+    done
+}
+
+popvar(){
+    for pvar in $*; do
+        eval level=\${${pvar}_level:-0}
+        test $level = 0 && continue
+        eval level=$(($level-1))
+        eval $pvar="\${${pvar}_${level}}"
+        eval ${pvar}_level=$level
+        eval unset ${pvar}_${level}
+    done
+}
+
+enable(){
+    set_all yes $*
+}
+
+disable(){
+    set_all no $*
+}
+
+enable_weak(){
+    set_weak yes $*
+}
+
+disable_weak(){
+    set_weak no $*
+}
+
+enable_safe(){
+    for var; do
+        enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+disable_safe(){
+    for var; do
+        disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
+    done
+}
+
+do_enable_deep(){
+    for var; do
+        enabled $var && continue
+        eval sel="\$${var}_select"
+        eval sgs="\$${var}_suggest"
+        pushvar var sgs
+        enable_deep $sel
+        popvar sgs
+        enable_deep_weak $sgs
+        popvar var
+    done
+}
+
+enable_deep(){
+    do_enable_deep $*
+    enable $*
+}
+
+enable_deep_weak(){
+    for var; do
+        disabled $var && continue
+        pushvar var
+        do_enable_deep $var
+        popvar var
+        enable_weak $var
+    done
+}
+
+enabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xyes"
+}
+
+disabled(){
+    test "${1#!}" = "$1" && op='=' || op=!=
+    eval test "x\$${1#!}" $op "xno"
+}
+
+enabled_all(){
+    for opt; do
+        enabled $opt || return 1
+    done
+}
+
+disabled_all(){
+    for opt; do
+        disabled $opt || return 1
+    done
+}
+
+enabled_any(){
+    for opt; do
+        enabled $opt && return 0
+    done
+}
+
+disabled_any(){
+    for opt; do
+        disabled $opt && return 0
+    done
+    return 1
+}
+
+set_default(){
+    for opt; do
+        eval : \${$opt:=\$${opt}_default}
+    done
+}
+
+is_in(){
+    value=$1
+    shift
+    for var in $*; do
+        [ $var = $value ] && return 0
+    done
+    return 1
+}
+
+do_check_deps(){
+    for cfg; do
+        cfg="${cfg#!}"
+        enabled ${cfg}_checking && die "Circular dependency for $cfg."
+        disabled ${cfg}_checking && continue
+        enable ${cfg}_checking
+        append allopts $cfg
+
+        eval dep_all="\$${cfg}_deps"
+        eval dep_any="\$${cfg}_deps_any"
+        eval dep_sel="\$${cfg}_select"
+        eval dep_sgs="\$${cfg}_suggest"
+        eval dep_ifa="\$${cfg}_if"
+        eval dep_ifn="\$${cfg}_if_any"
+
+        pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+        do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
+        popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
+
+        [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
+        [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
+        enabled_all  $dep_all || disable $cfg
+        enabled_any  $dep_any || disable $cfg
+        disabled_any $dep_sel && disable $cfg
+
+        if enabled $cfg; then
+            enable_deep $dep_sel
+            enable_deep_weak $dep_sgs
+        fi
+
+        disable ${cfg}_checking
+    done
+}
+
+check_deps(){
+    unset allopts
+
+    do_check_deps "$@"
+
+    for cfg in $allopts; do
+        enabled $cfg || continue
+        eval dep_extralibs="\$${cfg}_extralibs"
+        test -n "$dep_extralibs" && add_extralibs $dep_extralibs
+    done
+}
+
+print_config(){
+    pfx=$1
+    files=$2
+    shift 2
+    map 'eval echo "$v \${$v:-no}"' "$@" |
+    awk "BEGIN { split(\"$files\", files) }
+        {
+            c = \"$pfx\" toupper(\$1);
+            v = \$2;
+            sub(/yes/, 1, v);
+            sub(/no/,  0, v);
+            for (f in files) {
+                file = files[f];
+                if (file ~ /\\.h\$/) {
+                    printf(\"#define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.asm\$/) {
+                    printf(\"%%define %s %d\\n\", c, v) >>file;
+                } else if (file ~ /\\.mak\$/) {
+                    n = -v ? \"\" : \"!\";
+                    printf(\"%s%s=yes\\n\", n, c) >>file;
+                } else if (file ~ /\\.texi\$/) {
+                    pre = -v ? \"\" : \"@c \";
+                    yesno = \$2;
+                    c2 = tolower(c);
+                    gsub(/_/, \"-\", c2);
+                    printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
+                }
+            }
+        }"
+}
+
+print_enabled(){
+    suf=$1
+    shift
+    for v; do
+        enabled $v && printf "%s\n" ${v%$suf}
+    done
+}
+
+append(){
+    var=$1
+    shift
+    eval "$var=\"\$$var $*\""
+}
+
+prepend(){
+    var=$1
+    shift
+    eval "$var=\"$* \$$var\""
+}
+
+unique(){
+    var=$1
+    uniq_list=""
+    for tok in $(eval echo \$$var); do
+        uniq_list="$(filter_out $tok $uniq_list) $tok"
+    done
+    eval "$var=\"${uniq_list}\""
+}
+
+add_cppflags(){
+    append CPPFLAGS "$@"
+}
+
+add_cflags(){
+    append CFLAGS $($cflags_filter "$@")
+}
+
+add_cxxflags(){
+    append CXXFLAGS $($cflags_filter "$@")
+}
+
+add_asflags(){
+    append ASFLAGS $($asflags_filter "$@")
+}
+
+add_objcflags(){
+    append OBJCFLAGS $($objcflags_filter "$@")
+}
+
+add_ldflags(){
+    append LDFLAGS $($ldflags_filter "$@")
+}
+
+add_ldexeflags(){
+    append LDEXEFLAGS $($ldflags_filter "$@")
+}
+
+add_ldlibflags(){
+    append LDLIBFLAGS $($ldflags_filter "$@")
+}
+
+add_stripflags(){
+    append ASMSTRIPFLAGS "$@"
+}
+
+add_extralibs(){
+    prepend extralibs $($ldflags_filter "$@")
+}
+
+add_host_cppflags(){
+    append host_cppflags "$@"
+}
+
+add_host_cflags(){
+    append host_cflags $($host_cflags_filter "$@")
+}
+
+add_host_ldflags(){
+    append host_ldflags $($host_ldflags_filter "$@")
+}
+
+add_compat(){
+    append compat_objs $1
+    shift
+    map 'add_cppflags -D$v' "$@"
+}
+
+check_cmd(){
+    log "$@"
+    "$@" >> $logfile 2>&1
+}
+
+check_stat(){
+    log check_stat "$@"
+    stat "$1" >> $logfile 2>&1
+}
+
+cc_o(){
+    eval printf '%s\\n' $CC_O
+}
+
+cc_e(){
+    eval printf '%s\\n' $CC_E
+}
+
+check_cc(){
+    log check_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
+}
+
+check_cxx(){
+    log check_cxx "$@"
+    cat > $TMPCPP
+    log_file $TMPCPP
+    check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
+}
+
+check_objcc(){
+    log check_objcc "$@"
+    cat > $TMPM
+    log_file $TMPM
+    check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
+}
+
+check_cpp(){
+    log check_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
+}
+
+as_o(){
+    eval printf '%s\\n' $AS_O
+}
+
+check_as(){
+    log check_as "$@"
+    cat > $TMPS
+    log_file $TMPS
+    check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
+}
+
+check_inline_asm(){
+    log check_inline_asm "$@"
+    name="$1"
+    code="$2"
+    shift 2
+    disable $name
+    check_cc "$@" <<EOF && enable $name
+void foo(void){ __asm__ volatile($code); }
+EOF
+}
+
+check_inline_asm_flags(){
+    log check_inline_asm_flags "$@"
+    name="$1"
+    code="$2"
+    flags=''
+    shift 2
+    while [ "$1" != "" ]; do
+      append flags $1
+      shift
+    done;
+    disable $name
+    cat > $TMPC <<EOF
+void foo(void){ __asm__ volatile($code); }
+EOF
+    log_file $TMPC
+    check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
+    enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
+}
+
+check_insn(){
+    log check_insn "$@"
+    check_inline_asm ${1}_inline "\"$2\""
+    echo "$2" | check_as && enable ${1}_external || disable ${1}_external
+}
+
+check_yasm(){
+    log check_yasm "$@"
+    echo "$1" > $TMPS
+    log_file $TMPS
+    shift 1
+    check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
+}
+
+ld_o(){
+    eval printf '%s\\n' $LD_O
+}
+
+check_ld(){
+    log check_ld "$@"
+    type=$1
+    shift 1
+    flags=$(filter_out '-l*|*.so' $@)
+    libs=$(filter '-l*|*.so' $@)
+    check_$type $($cflags_filter $flags) || return
+    flags=$($ldflags_filter $flags)
+    libs=$($ldflags_filter $libs)
+    check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
+}
+
+print_include(){
+    hdr=$1
+    test "${hdr%.h}" = "${hdr}" &&
+        echo "#include $hdr"    ||
+        echo "#include <$hdr>"
+}
+
+check_code(){
+    log check_code "$@"
+    check=$1
+    headers=$2
+    code=$3
+    shift 3
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        echo "int main(void) { $code; return 0; }"
+    } | check_$check "$@"
+}
+
+check_cppflags(){
+    log check_cppflags "$@"
+    check_cc "$@" <<EOF && append CPPFLAGS "$@"
+int x;
+EOF
+}
+
+test_cflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cc "$@" <<EOF
+int x;
+EOF
+}
+
+check_cflags(){
+    log check_cflags "$@"
+    test_cflags "$@" && add_cflags "$@"
+}
+
+check_cxxflags(){
+    log check_cxxflags "$@"
+    set -- $($cflags_filter "$@")
+    check_cxx "$@" <<EOF && append CXXFLAGS "$@"
+int x;
+EOF
+}
+
+test_objcflags(){
+    log test_cflags "$@"
+    set -- $($cflags_filter "$@")
+    check_objcc "$@" <<EOF
+int x;
+EOF
+}
+
+check_objcflags(){
+    log check_cflags "$@"
+    test_objcflags "$@" && add_objcflags "$@"
+}
+
+test_ldflags(){
+    log test_ldflags "$@"
+    check_ld "cc" "$@" <<EOF
+int main(void){ return 0; }
+EOF
+}
+
+check_ldflags(){
+    log check_ldflags "$@"
+    test_ldflags "$@" && add_ldflags "$@"
+}
+
+test_stripflags(){
+    log test_stripflags "$@"
+    # call check_cc to get a fresh TMPO
+    check_cc <<EOF
+int main(void) { return 0; }
+EOF
+    check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
+}
+
+check_stripflags(){
+    log check_stripflags "$@"
+    test_stripflags "$@" && add_stripflags "$@"
+}
+
+check_header(){
+    log check_header "$@"
+    header=$1
+    shift
+    disable_safe $header
+    check_cpp "$@" <<EOF && enable_safe $header
+#include <$header>
+int x;
+EOF
+}
+
+check_header_objcc(){
+    log check_header_objcc "$@"
+    rm -f -- "$TMPO"
+    header=$1
+    shift
+    disable_safe $header
+    {
+       echo "#include <$header>"
+       echo "int main(void) { return 0; }"
+    } | check_objcc && check_stat "$TMPO" && enable_safe $headers
+}
+
+check_func(){
+    log check_func "$@"
+    func=$1
+    shift
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+extern int $func();
+int main(void){ $func(); }
+EOF
+}
+
+check_complexfunc(){
+    log check_complexfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f * I"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <complex.h>
+#include <math.h>
+float foo(complex float f, complex float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_mathfunc(){
+    log check_mathfunc "$@"
+    func=$1
+    narg=$2
+    shift 2
+    test $narg = 2 && args="f, g" || args="f"
+    disable $func
+    check_ld "cc" "$@" <<EOF && enable $func
+#include <math.h>
+float foo(float f, float g) { return $func($args); }
+int main(void){ return (int) foo; }
+EOF
+}
+
+check_func_headers(){
+    log check_func_headers "$@"
+    headers=$1
+    funcs=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            print_include $hdr
+        done
+        for func in $funcs; do
+            echo "long check_$func(void) { return (long) $func; }"
+        done
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_class_headers_cpp(){
+    log check_class_headers_cpp "$@"
+    headers=$1
+    classes=$2
+    shift 2
+    {
+        for hdr in $headers; do
+            echo "#include <$hdr>"
+        done
+        echo "int main(void) { "
+        i=1
+        for class in $classes; do
+            echo "$class obj$i;"
+            i=$(expr $i + 1)
+        done
+        echo "return 0; }"
+    } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
+}
+
+check_cpp_condition(){
+    log check_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+check_lib(){
+    log check_lib "$@"
+    header="$1"
+    func="$2"
+    shift 2
+    check_header $header && check_func $func "$@" && add_extralibs "$@"
+}
+
+check_lib2(){
+    log check_lib2 "$@"
+    headers="$1"
+    funcs="$2"
+    shift 2
+    check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
+}
+
+check_lib_cpp(){
+    log check_lib_cpp "$@"
+    headers="$1"
+    classes="$2"
+    shift 2
+    check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
+}
+
+check_pkg_config(){
+    log check_pkg_config "$@"
+    pkgandversion="$1"
+    pkg="${1%% *}"
+    headers="$2"
+    funcs="$3"
+    shift 3
+    check_cmd $pkg_config --exists --print-errors $pkgandversion || return
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
+        set_safe "${pkg}_cflags" $pkg_cflags   &&
+        set_safe "${pkg}_libs"   $pkg_libs
+}
+
+check_exec(){
+    check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
+}
+
+check_exec_crash(){
+    code=$(cat)
+
+    # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
+    # are safe but may not be available everywhere.  Thus we use
+    # raise(SIGTERM) instead.  The check is run in a subshell so we
+    # can redirect the "Terminated" message from the shell.  SIGBUS
+    # is not defined by standard C so it is used conditionally.
+
+    (check_exec "$@") >> $logfile 2>&1 <<EOF
+#include <signal.h>
+static void sighandler(int sig){
+    raise(SIGTERM);
+}
+int foo(void){
+    $code
+}
+int (*func_ptr)(void) = foo;
+int main(void){
+    signal(SIGILL, sighandler);
+    signal(SIGFPE, sighandler);
+    signal(SIGSEGV, sighandler);
+#ifdef SIGBUS
+    signal(SIGBUS, sighandler);
+#endif
+    return func_ptr();
+}
+EOF
+}
+
+check_type(){
+    log check_type "$@"
+    headers=$1
+    type=$2
+    shift 2
+    disable_safe "$type"
+    check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
+}
+
+check_struct(){
+    log check_struct "$@"
+    headers=$1
+    struct=$2
+    member=$3
+    shift 3
+    disable_safe "${struct}_${member}"
+    check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
+        enable_safe "${struct}_${member}"
+}
+
+check_builtin(){
+    log check_builtin "$@"
+    name=$1
+    headers=$2
+    builtin=$3
+    shift 3
+    disable "$name"
+    check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
+}
+
+check_compile_assert(){
+    log check_compile_assert "$@"
+    name=$1
+    headers=$2
+    condition=$3
+    shift 3
+    disable "$name"
+    check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
+}
+
+require(){
+    name="$1"
+    header="$2"
+    func="$3"
+    shift 3
+    check_lib $header $func "$@" || die "ERROR: $name not found"
+}
+
+require2(){
+    name="$1"
+    headers="$2"
+    func="$3"
+    shift 3
+    check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
+}
+
+require_cpp(){
+    name="$1"
+    headers="$2"
+    classes="$3"
+    shift 3
+    check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
+}
+
+use_pkg_config(){
+    pkg="$1"
+    check_pkg_config "$@" || return 1
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+require_pkg_config(){
+    use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
+}
+
+require_libfreetype(){
+    log require_libfreetype "$@"
+    pkg="freetype2"
+    check_cmd $pkg_config --exists --print-errors $pkg \
+      || die "ERROR: $pkg not found"
+    pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
+    pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
+    {
+        echo "#include <ft2build.h>"
+        echo "#include FT_FREETYPE_H"
+        echo "long check_func(void) { return (long) FT_Init_FreeType; }"
+        echo "int main(void) { return 0; }"
+    } | check_ld "cc" $pkg_cflags $pkg_libs \
+      && set_safe "${pkg}_cflags" $pkg_cflags \
+      && set_safe "${pkg}_libs"   $pkg_libs \
+      || die "ERROR: $pkg not found"
+    add_cflags    $(get_safe "${pkg}_cflags")
+    add_extralibs $(get_safe "${pkg}_libs")
+}
+
+hostcc_e(){
+    eval printf '%s\\n' $HOSTCC_E
+}
+
+hostcc_o(){
+    eval printf '%s\\n' $HOSTCC_O
+}
+
+check_host_cc(){
+    log check_host_cc "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
+}
+
+check_host_cpp(){
+    log check_host_cpp "$@"
+    cat > $TMPC
+    log_file $TMPC
+    check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
+}
+
+check_host_cppflags(){
+    log check_host_cppflags "$@"
+    check_host_cc "$@" <<EOF && append host_cppflags "$@"
+int x;
+EOF
+}
+
+check_host_cflags(){
+    log check_host_cflags "$@"
+    set -- $($host_cflags_filter "$@")
+    check_host_cc "$@" <<EOF && append host_cflags "$@"
+int x;
+EOF
+}
+
+check_host_cpp_condition(){
+    log check_host_cpp_condition "$@"
+    header=$1
+    condition=$2
+    shift 2
+    check_host_cpp "$@" <<EOF
+#include <$header>
+#if !($condition)
+#error "unsatisfied condition: $condition"
+#endif
+EOF
+}
+
+cp_if_changed(){
+    cmp -s "$1" "$2" && echo "$2 is unchanged" && return
+    mkdir -p "$(dirname $2)"
+    $cp_f "$1" "$2"
+}
+
+# CONFIG_LIST contains configurable options, while HAVE_LIST is for
+# system-dependent things.
+
+AVCODEC_COMPONENTS="
+    bsfs
+    decoders
+    encoders
+    hwaccels
+    parsers
+"
+
+AVDEVICE_COMPONENTS="
+    indevs
+    outdevs
+"
+AVFILTER_COMPONENTS="
+    filters
+"
+AVFORMAT_COMPONENTS="
+    demuxers
+    muxers
+    protocols
+"
+
+AVRESAMPLE_COMPONENTS=""
+AVUTIL_COMPONENTS=""
+
+COMPONENT_LIST="
+    $AVCODEC_COMPONENTS
+    $AVDEVICE_COMPONENTS
+    $AVFILTER_COMPONENTS
+    $AVFORMAT_COMPONENTS
+    $AVRESAMPLE_COMPONENTS
+    $AVUTIL_COMPONENTS
+"
+
+EXAMPLE_LIST="
+    avio_reading_example
+    avio_dir_cmd_example
+    decoding_encoding_example
+    demuxing_decoding_example
+    extract_mvs_example
+    filter_audio_example
+    filtering_audio_example
+    filtering_video_example
+    metadata_example
+    muxing_example
+    qsvdec_example
+    remuxing_example
+    resampling_audio_example
+    scaling_video_example
+    transcode_aac_example
+    transcoding_example
+"
+
+EXTERNAL_LIBRARY_LIST="
+    avisynth
+    bzlib
+    chromaprint
+    crystalhd
+    decklink
+    frei0r
+    gcrypt
+    gmp
+    gnutls
+    iconv
+    jni
+    ladspa
+    libass
+    libbluray
+    libbs2b
+    libcaca
+    libcdio
+    libcelt
+    libdc1394
+    libebur128
+    libfaac
+    libfdk_aac
+    libflite
+    libfontconfig
+    libfreetype
+    libfribidi
+    libgme
+    libgsm
+    libiec61883
+    libilbc
+    libkvazaar
+    libmodplug
+    libmp3lame
+    libnut
+    libopencore_amrnb
+    libopencore_amrwb
+    libopencv
+    libopenh264
+    libopenjpeg
+    libopus
+    libpulse
+    librtmp
+    librubberband
+    libschroedinger
+    libshine
+    libsmbclient
+    libsnappy
+    libsoxr
+    libspeex
+    libssh
+    libtesseract
+    libtheora
+    libtwolame
+    libv4l2
+    libvidstab
+    libvo_amrwbenc
+    libvorbis
+    libvpx
+    libwavpack
+    libwebp
+    libx264
+    libx265
+    libxavs
+    libxcb
+    libxcb_shm
+    libxcb_shape
+    libxcb_xfixes
+    libxvid
+    libzimg
+    libzmq
+    libzvbi
+    lzma
+    mediacodec
+    netcdf
+    openal
+    opencl
+    opengl
+    openssl
+    schannel
+    sdl
+    securetransport
+    videotoolbox
+    x11grab
+    xlib
+    zlib
+"
+
+HWACCEL_LIBRARY_LIST="
+    audiotoolbox
+    cuda
+    cuvid
+    d3d11va
+    dxva2
+    libmfx
+    libnpp
+    mmal
+    nvenc
+    omx
+    vaapi
+    vda
+    vdpau
+    videotoolbox_hwaccel
+    xvmc
+"
+
+DOCUMENT_LIST="
+    doc
+    htmlpages
+    manpages
+    podpages
+    txtpages
+"
+
+FEATURE_LIST="
+    ftrapv
+    gray
+    hardcoded_tables
+    omx_rpi
+    runtime_cpudetect
+    safe_bitstream_reader
+    shared
+    small
+    static
+    swscale_alpha
+"
+
+LIBRARY_LIST="
+    avcodec
+    avdevice
+    avfilter
+    avformat
+    avresample
+    avutil
+    postproc
+    swresample
+    swscale
+"
+
+LICENSE_LIST="
+    gpl
+    nonfree
+    version3
+"
+
+PROGRAM_LIST="
+    ffplay
+    ffprobe
+    ffserver
+    ffmpeg
+"
+
+SUBSYSTEM_LIST="
+    dct
+    dwt
+    error_resilience
+    faan
+    fast_unaligned
+    fft
+    lsp
+    lzo
+    mdct
+    pixelutils
+    network
+    rdft
+"
+
+CONFIG_LIST="
+    $COMPONENT_LIST
+    $DOCUMENT_LIST
+    $EXAMPLE_LIST
+    $EXTERNAL_LIBRARY_LIST
+    $HWACCEL_LIBRARY_LIST
+    $FEATURE_LIST
+    $LICENSE_LIST
+    $LIBRARY_LIST
+    $PROGRAM_LIST
+    $SUBSYSTEM_LIST
+    fontconfig
+    incompatible_libav_abi
+    memalign_hack
+    memory_poisoning
+    neon_clobber_test
+    pic
+    pod2man
+    raise_major
+    thumb
+    valgrind_backtrace
+    xmm_clobber_test
+"
+
+THREADS_LIST="
+    pthreads
+    os2threads
+    w32threads
+"
+
+ATOMICS_LIST="
+    atomics_gcc
+    atomics_suncc
+    atomics_win32
+"
+
+ARCH_LIST="
+    aarch64
+    alpha
+    arm
+    avr32
+    avr32_ap
+    avr32_uc
+    bfin
+    ia64
+    m68k
+    mips
+    mips64
+    parisc
+    ppc
+    ppc64
+    s390
+    sh4
+    sparc
+    sparc64
+    tilegx
+    tilepro
+    tomi
+    x86
+    x86_32
+    x86_64
+"
+
+ARCH_EXT_LIST_ARM="
+    armv5te
+    armv6
+    armv6t2
+    armv8
+    neon
+    vfp
+    vfpv3
+    setend
+"
+
+ARCH_EXT_LIST_MIPS="
+    mipsfpu
+    mips32r2
+    mips32r5
+    mips64r2
+    mips32r6
+    mips64r6
+    mipsdsp
+    mipsdspr2
+    msa
+"
+
+ARCH_EXT_LIST_LOONGSON="
+    loongson2
+    loongson3
+    mmi
+"
+
+ARCH_EXT_LIST_X86_SIMD="
+    aesni
+    amd3dnow
+    amd3dnowext
+    avx
+    avx2
+    fma3
+    fma4
+    mmx
+    mmxext
+    sse
+    sse2
+    sse3
+    sse4
+    sse42
+    ssse3
+    xop
+"
+
+ARCH_EXT_LIST_PPC="
+    altivec
+    dcbzl
+    ldbrx
+    power8
+    ppc4xx
+    vsx
+"
+
+ARCH_EXT_LIST_X86="
+    $ARCH_EXT_LIST_X86_SIMD
+    cpunop
+    i686
+"
+
+ARCH_EXT_LIST="
+    $ARCH_EXT_LIST_ARM
+    $ARCH_EXT_LIST_PPC
+    $ARCH_EXT_LIST_X86
+    $ARCH_EXT_LIST_MIPS
+    $ARCH_EXT_LIST_LOONGSON
+"
+
+ARCH_FEATURES="
+    aligned_stack
+    fast_64bit
+    fast_clz
+    fast_cmov
+    local_aligned_8
+    local_aligned_16
+    local_aligned_32
+    simd_align_16
+"
+
+BUILTIN_LIST="
+    atomic_cas_ptr
+    atomic_compare_exchange
+    machine_rw_barrier
+    MemoryBarrier
+    mm_empty
+    rdtsc
+    sarestart
+    sem_timedwait
+    sync_val_compare_and_swap
+"
+HAVE_LIST_CMDLINE="
+    inline_asm
+    symver
+    yasm
+"
+
+HAVE_LIST_PUB="
+    bigendian
+    fast_unaligned
+    incompatible_libav_abi
+"
+
+HEADERS_LIST="
+    alsa_asoundlib_h
+    altivec_h
+    arpa_inet_h
+    asm_types_h
+    cdio_paranoia_h
+    cdio_paranoia_paranoia_h
+    dispatch_dispatch_h
+    dev_bktr_ioctl_bt848_h
+    dev_bktr_ioctl_meteor_h
+    dev_ic_bt8xx_h
+    dev_video_bktr_ioctl_bt848_h
+    dev_video_meteor_ioctl_meteor_h
+    direct_h
+    dirent_h
+    dlfcn_h
+    d3d11_h
+    dxva_h
+    ES2_gl_h
+    gsm_h
+    io_h
+    mach_mach_time_h
+    machine_ioctl_bt848_h
+    machine_ioctl_meteor_h
+    malloc_h
+    opencv2_core_core_c_h
+    openjpeg_2_1_openjpeg_h
+    openjpeg_2_0_openjpeg_h
+    openjpeg_1_5_openjpeg_h
+    OpenGL_gl3_h
+    poll_h
+    sndio_h
+    soundcard_h
+    sys_mman_h
+    sys_param_h
+    sys_resource_h
+    sys_select_h
+    sys_soundcard_h
+    sys_time_h
+    sys_un_h
+    sys_videoio_h
+    termios_h
+    udplite_h
+    unistd_h
+    valgrind_valgrind_h
+    windows_h
+    winsock2_h
+"
+
+INTRINSICS_LIST="
+    intrinsics_neon
+"
+
+COMPLEX_FUNCS="
+    cabs
+    cexp
+"
+
+MATH_FUNCS="
+    atanf
+    atan2f
+    cbrt
+    cbrtf
+    copysign
+    cosf
+    erf
+    exp2
+    exp2f
+    expf
+    hypot
+    isfinite
+    isinf
+    isnan
+    ldexpf
+    llrint
+    llrintf
+    log2
+    log2f
+    log10f
+    lrint
+    lrintf
+    powf
+    rint
+    round
+    roundf
+    sinf
+    trunc
+    truncf
+"
+
+SYSTEM_FUNCS="
+    access
+    aligned_malloc
+    arc4random
+    clock_gettime
+    closesocket
+    CommandLineToArgvW
+    CoTaskMemFree
+    CryptGenRandom
+    dlopen
+    fcntl
+    flt_lim
+    fork
+    getaddrinfo
+    gethrtime
+    getopt
+    GetProcessAffinityMask
+    GetProcessMemoryInfo
+    GetProcessTimes
+    getrusage
+    GetSystemTimeAsFileTime
+    gettimeofday
+    glob
+    glXGetProcAddress
+    gmtime_r
+    inet_aton
+    isatty
+    jack_port_get_latency_range
+    kbhit
+    localtime_r
+    lstat
+    lzo1x_999_compress
+    mach_absolute_time
+    MapViewOfFile
+    memalign
+    mkstemp
+    mmap
+    mprotect
+    nanosleep
+    PeekNamedPipe
+    posix_memalign
+    pthread_cancel
+    sched_getaffinity
+    SetConsoleTextAttribute
+    SetConsoleCtrlHandler
+    SetDllDirectory
+    setmode
+    setrlimit
+    Sleep
+    strerror_r
+    sysconf
+    sysctl
+    usleep
+    UTGetOSTypeFromString
+    VirtualAlloc
+    wglGetProcAddress
+"
+
+TOOLCHAIN_FEATURES="
+    as_dn_directive
+    as_func
+    as_object_arch
+    asm_mod_q
+    attribute_may_alias
+    attribute_packed
+    ebp_available
+    ebx_available
+    gnu_as
+    gnu_windres
+    ibm_asm
+    inline_asm_direct_symbol_refs
+    inline_asm_labels
+    inline_asm_nonlocal_labels
+    pragma_deprecated
+    rsync_contimeout
+    symver_asm_label
+    symver_gnu_asm
+    vfp_args
+    xform_asm
+    xmm_clobbers
+"
+
+TYPES_LIST="
+    CONDITION_VARIABLE_Ptr
+    socklen_t
+    struct_addrinfo
+    struct_group_source_req
+    struct_ip_mreq_source
+    struct_ipv6_mreq
+    struct_msghdr_msg_flags
+    struct_pollfd
+    struct_rusage_ru_maxrss
+    struct_sctp_event_subscribe
+    struct_sockaddr_in6
+    struct_sockaddr_sa_len
+    struct_sockaddr_storage
+    struct_stat_st_mtim_tv_nsec
+    struct_v4l2_frmivalenum_discrete
+"
+
+HAVE_LIST="
+    $ARCH_EXT_LIST
+    $(add_suffix _external $ARCH_EXT_LIST)
+    $(add_suffix _inline   $ARCH_EXT_LIST)
+    $ARCH_FEATURES
+    $ATOMICS_LIST
+    $BUILTIN_LIST
+    $COMPLEX_FUNCS
+    $HAVE_LIST_CMDLINE
+    $HAVE_LIST_PUB
+    $HEADERS_LIST
+    $INTRINSICS_LIST
+    $MATH_FUNCS
+    $SYSTEM_FUNCS
+    $THREADS_LIST
+    $TOOLCHAIN_FEATURES
+    $TYPES_LIST
+    atomics_native
+    dos_paths
+    dxva2_lib
+    dxva2api_cobj
+    libc_msvcrt
+    libdc1394_1
+    libdc1394_2
+    makeinfo
+    makeinfo_html
+    MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
+    perl
+    pod2man
+    sdl
+    section_data_rel_ro
+    texi2html
+    threads
+    vaapi_drm
+    vaapi_x11
+    vdpau_x11
+    winrt
+    xlib
+"
+
+# options emitted with CONFIG_ prefix but not available on the command line
+CONFIG_EXTRA="
+    aandcttables
+    ac3dsp
+    audio_frame_queue
+    audiodsp
+    blockdsp
+    bswapdsp
+    cabac
+    dirac_parse
+    dvprofile
+    exif
+    faandct
+    faanidct
+    fdctdsp
+    flacdsp
+    fmtconvert
+    frame_thread_encoder
+    g722dsp
+    golomb
+    gplv3
+    h263dsp
+    h264chroma
+    h264dsp
+    h264pred
+    h264qpel
+    hpeldsp
+    huffman
+    huffyuvdsp
+    huffyuvencdsp
+    idctdsp
+    iirfilter
+    imdct15
+    intrax8
+    iso_media
+    ividsp
+    jpegtables
+    lgplv3
+    libx262
+    llauddsp
+    llviddsp
+    lpc
+    lzf
+    me_cmp
+    mpeg_er
+    mpegaudio
+    mpegaudiodsp
+    mpegvideo
+    mpegvideoenc
+    mss34dsp
+    pixblockdsp
+    qpeldsp
+    qsv
+    qsvdec
+    qsvenc
+    rangecoder
+    riffdec
+    riffenc
+    rtpdec
+    rtpenc_chain
+    rv34dsp
+    sinewin
+    snappy
+    srtp
+    startcode
+    texturedsp
+    texturedspenc
+    tpeldsp
+    vaapi_encode
+    vc1dsp
+    videodsp
+    vp3dsp
+    vp56dsp
+    vp8dsp
+    vt_bt2020
+    wma_freqs
+    wmv2dsp
+"
+
+CMDLINE_SELECT="
+    $ARCH_EXT_LIST
+    $CONFIG_LIST
+    $HAVE_LIST_CMDLINE
+    $THREADS_LIST
+    asm
+    cross_compile
+    debug
+    extra_warnings
+    logging
+    lto
+    optimizations
+    rpath
+    stripping
+"
+
+PATHS_LIST="
+    bindir
+    datadir
+    docdir
+    incdir
+    libdir
+    mandir
+    pkgconfigdir
+    prefix
+    shlibdir
+    install_name_dir
+"
+
+CMDLINE_SET="
+    $PATHS_LIST
+    ar
+    arch
+    as
+    assert_level
+    build_suffix
+    cc
+    objcc
+    cpu
+    cross_prefix
+    custom_allocator
+    cxx
+    dep_cc
+    doxygen
+    env
+    extra_version
+    gas
+    host_cc
+    host_cflags
+    host_ld
+    host_ldflags
+    host_libs
+    host_os
+    install
+    ld
+    ln_s
+    logfile
+    malloc_prefix
+    nm
+    optflags
+    pkg_config
+    pkg_config_flags
+    progs_suffix
+    random_seed
+    ranlib
+    samples
+    strip
+    sws_max_filter_size
+    sysinclude
+    sysroot
+    target_exec
+    target_os
+    target_path
+    target_samples
+    tempprefix
+    toolchain
+    valgrind
+    yasmexe
+"
+
+CMDLINE_APPEND="
+    extra_cflags
+    extra_cxxflags
+    extra_objcflags
+    host_cppflags
+"
+
+# code dependency declarations
+
+# architecture extensions
+
+armv5te_deps="arm"
+armv6_deps="arm"
+armv6t2_deps="arm"
+armv8_deps="aarch64"
+neon_deps_any="aarch64 arm"
+intrinsics_neon_deps="neon"
+vfp_deps_any="aarch64 arm"
+vfpv3_deps="vfp"
+setend_deps="arm"
+
+map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
+
+mipsfpu_deps="mips"
+mipsdsp_deps="mips"
+mipsdspr2_deps="mips"
+mips32r2_deps="mips"
+mips32r5_deps="mips"
+mips32r6_deps="mips"
+mips64r2_deps="mips"
+mips64r6_deps="mips"
+msa_deps="mipsfpu"
+mmi_deps="mips"
+
+altivec_deps="ppc"
+dcbzl_deps="ppc"
+ldbrx_deps="ppc"
+ppc4xx_deps="ppc"
+vsx_deps="altivec"
+power8_deps="vsx"
+
+cpunop_deps="i686"
+x86_64_select="i686"
+x86_64_suggest="fast_cmov"
+
+amd3dnow_deps="mmx"
+amd3dnowext_deps="amd3dnow"
+i686_deps="x86"
+mmx_deps="x86"
+mmxext_deps="mmx"
+sse_deps="mmxext"
+sse2_deps="sse"
+sse3_deps="sse2"
+ssse3_deps="sse3"
+sse4_deps="ssse3"
+sse42_deps="sse4"
+aesni_deps="sse42"
+avx_deps="sse42"
+xop_deps="avx"
+fma3_deps="avx"
+fma4_deps="avx"
+avx2_deps="avx"
+
+mmx_external_deps="yasm"
+mmx_inline_deps="inline_asm"
+mmx_suggest="mmx_external mmx_inline"
+
+for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
+    eval dep=\$${ext}_deps
+    eval ${ext}_external_deps='"${dep}_external"'
+    eval ${ext}_inline_deps='"${dep}_inline"'
+    eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
+done
+
+aligned_stack_if_any="aarch64 ppc x86"
+fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
+fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
+fast_unaligned_if_any="aarch64 ppc x86"
+simd_align_16_if_any="altivec neon sse"
+
+# system capabilities
+symver_if_any="symver_asm_label symver_gnu_asm"
+valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
+
+# threading support
+atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
+atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
+atomics_win32_if="MemoryBarrier"
+atomics_native_if_any="$ATOMICS_LIST"
+w32threads_deps="atomics_native"
+threads_if_any="$THREADS_LIST"
+
+# subsystems
+dct_select="rdft"
+dirac_parse_select="golomb"
+error_resilience_select="me_cmp"
+faandct_deps="faan fdctdsp"
+faanidct_deps="faan idctdsp"
+h264dsp_select="startcode"
+frame_thread_encoder_deps="encoders threads"
+intrax8_select="blockdsp idctdsp"
+mdct_select="fft"
+me_cmp_select="fdctdsp idctdsp pixblockdsp"
+mpeg_er_select="error_resilience"
+mpegaudio_select="mpegaudiodsp"
+mpegaudiodsp_select="dct"
+mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
+mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
+vc1dsp_select="h264chroma qpeldsp startcode"
+rdft_select="fft"
+
+# decoders / encoders
+aac_decoder_select="imdct15 mdct sinewin"
+aac_fixed_decoder_select="mdct sinewin"
+aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
+aac_latm_decoder_select="aac_decoder aac_latm_parser"
+ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
+ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
+ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
+ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
+adpcm_g722_decoder_select="g722dsp"
+adpcm_g722_encoder_select="g722dsp"
+aic_decoder_select="golomb idctdsp"
+alac_encoder_select="lpc"
+als_decoder_select="bswapdsp"
+amrnb_decoder_select="lsp"
+amrwb_decoder_select="lsp"
+amv_decoder_select="sp5x_decoder exif"
+amv_encoder_select="aandcttables jpegtables mpegvideoenc"
+ape_decoder_select="bswapdsp llauddsp"
+apng_decoder_select="zlib"
+apng_encoder_select="huffyuvencdsp zlib"
+asv1_decoder_select="blockdsp bswapdsp idctdsp"
+asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
+asv2_decoder_select="blockdsp bswapdsp idctdsp"
+asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
+atrac1_decoder_select="mdct sinewin"
+atrac3_decoder_select="mdct"
+atrac3p_decoder_select="mdct sinewin"
+avrn_decoder_select="exif jpegtables"
+bink_decoder_select="blockdsp hpeldsp"
+binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
+binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
+cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
+cllc_decoder_select="bswapdsp"
+comfortnoise_encoder_select="lpc"
+cook_decoder_select="audiodsp mdct sinewin"
+cscd_decoder_select="lzo"
+cscd_decoder_suggest="zlib"
+dca_decoder_select="mdct"
+dds_decoder_select="texturedsp"
+dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
+dnxhd_decoder_select="blockdsp idctdsp"
+dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
+dvvideo_decoder_select="dvprofile idctdsp"
+dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
+dxa_decoder_select="zlib"
+dxv_decoder_select="lzf texturedsp"
+eac3_decoder_select="ac3_decoder"
+eac3_encoder_select="ac3_encoder"
+eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
+eatgq_decoder_select="aandcttables"
+eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
+exr_decoder_select="zlib"
+ffv1_decoder_select="golomb rangecoder"
+ffv1_encoder_select="rangecoder"
+ffvhuff_decoder_select="huffyuv_decoder"
+ffvhuff_encoder_select="huffyuv_encoder"
+fic_decoder_select="golomb"
+flac_decoder_select="flacdsp golomb"
+flac_encoder_select="bswapdsp flacdsp golomb lpc"
+flashsv2_decoder_select="zlib"
+flashsv2_encoder_select="zlib"
+flashsv_decoder_select="zlib"
+flashsv_encoder_select="zlib"
+flv_decoder_select="h263_decoder"
+flv_encoder_select="h263_encoder"
+fourxm_decoder_select="blockdsp bswapdsp"
+fraps_decoder_select="bswapdsp huffman"
+g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
+g729_decoder_select="audiodsp"
+h261_decoder_select="mpegvideo"
+h261_encoder_select="aandcttables mpegvideoenc"
+h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
+h263_encoder_select="aandcttables h263dsp mpegvideoenc"
+h263i_decoder_select="h263_decoder"
+h263p_decoder_select="h263_decoder"
+h263p_encoder_select="h263_encoder"
+h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
+h264_decoder_suggest="error_resilience"
+hap_decoder_select="snappy texturedsp"
+hap_encoder_deps="libsnappy"
+hap_encoder_select="texturedspenc"
+hevc_decoder_select="bswapdsp cabac golomb videodsp"
+huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
+huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
+iac_decoder_select="imc_decoder"
+imc_decoder_select="bswapdsp fft mdct sinewin"
+indeo3_decoder_select="hpeldsp"
+indeo4_decoder_select="ividsp"
+indeo5_decoder_select="ividsp"
+interplay_video_decoder_select="hpeldsp"
+jpegls_decoder_select="golomb mjpeg_decoder"
+jpegls_encoder_select="golomb"
+jv_decoder_select="blockdsp"
+lagarith_decoder_select="huffyuvdsp"
+ljpeg_encoder_select="aandcttables idctdsp jpegtables"
+loco_decoder_select="golomb"
+magicyuv_decoder_select="huffyuvdsp"
+mdec_decoder_select="blockdsp idctdsp mpegvideo"
+metasound_decoder_select="lsp mdct sinewin"
+mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
+mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
+mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
+mjpegb_decoder_select="mjpeg_decoder"
+mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
+mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
+mlp_decoder_select="mlp_parser"
+motionpixels_decoder_select="bswapdsp"
+mp1_decoder_select="mpegaudio"
+mp1float_decoder_select="mpegaudio"
+mp2_decoder_select="mpegaudio"
+mp2float_decoder_select="mpegaudio"
+mp3_decoder_select="mpegaudio"
+mp3adu_decoder_select="mpegaudio"
+mp3adufloat_decoder_select="mpegaudio"
+mp3float_decoder_select="mpegaudio"
+mp3on4_decoder_select="mpegaudio"
+mp3on4float_decoder_select="mpegaudio"
+mpc7_decoder_select="bswapdsp mpegaudiodsp"
+mpc8_decoder_select="mpegaudiodsp"
+mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
+mpeg_xvmc_decoder_select="mpeg2video_decoder"
+mpegvideo_decoder_select="mpegvideo"
+mpeg1video_decoder_select="mpegvideo"
+mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg2video_decoder_select="mpegvideo"
+mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
+mpeg4_decoder_select="h263_decoder mpeg4video_parser"
+mpeg4_encoder_select="h263_encoder"
+msa1_decoder_select="mss34dsp"
+msmpeg4v1_decoder_select="h263_decoder"
+msmpeg4v2_decoder_select="h263_decoder"
+msmpeg4v2_encoder_select="h263_encoder"
+msmpeg4v3_decoder_select="h263_decoder"
+msmpeg4v3_encoder_select="h263_encoder"
+mss2_decoder_select="vc1_decoder mpegvideo"
+mts2_decoder_select="mss34dsp"
+mxpeg_decoder_select="mjpeg_decoder"
+nellymoser_decoder_select="mdct sinewin"
+nellymoser_encoder_select="audio_frame_queue mdct sinewin"
+nuv_decoder_select="idctdsp lzo"
+on2avc_decoder_select="mdct"
+opus_decoder_deps="swresample"
+opus_decoder_select="imdct15"
+png_decoder_select="zlib"
+png_encoder_select="huffyuvencdsp zlib"
+prores_decoder_select="blockdsp idctdsp"
+prores_encoder_select="fdctdsp"
+qcelp_decoder_select="lsp"
+qdm2_decoder_select="mdct rdft mpegaudiodsp"
+ra_144_decoder_select="audiodsp"
+ra_144_encoder_select="audio_frame_queue lpc audiodsp"
+ralf_decoder_select="golomb"
+rawvideo_decoder_select="bswapdsp"
+rscc_decoder_select="zlib"
+rtjpeg_decoder_select="me_cmp"
+rv10_decoder_select="h263_decoder"
+rv10_encoder_select="h263_encoder"
+rv20_decoder_select="h263_decoder"
+rv20_encoder_select="h263_encoder"
+rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
+screenpresso_decoder_select="zlib"
+shorten_decoder_select="golomb"
+sipr_decoder_select="lsp"
+snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
+snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
+sonic_decoder_select="golomb rangecoder"
+sonic_encoder_select="golomb rangecoder"
+sonic_ls_encoder_select="golomb rangecoder"
+sp5x_decoder_select="mjpeg_decoder"
+svq1_decoder_select="hpeldsp"
+svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
+svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
+svq3_decoder_suggest="zlib"
+tak_decoder_select="audiodsp"
+tdsc_decoder_select="zlib mjpeg_decoder"
+theora_decoder_select="vp3_decoder"
+thp_decoder_select="mjpeg_decoder"
+tiff_decoder_suggest="zlib lzma"
+tiff_encoder_suggest="zlib"
+truehd_decoder_select="mlp_parser"
+truemotion2_decoder_select="bswapdsp"
+truespeech_decoder_select="bswapdsp"
+tscc_decoder_select="zlib"
+twinvq_decoder_select="mdct lsp sinewin"
+txd_decoder_select="texturedsp"
+utvideo_decoder_select="bswapdsp"
+utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
+vble_decoder_select="huffyuvdsp"
+vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
+vc1_qsv_decoder_deps="libmfx"
+vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
+vc1image_decoder_select="vc1_decoder"
+vorbis_decoder_select="mdct"
+vorbis_encoder_select="mdct"
+vp3_decoder_select="hpeldsp vp3dsp videodsp"
+vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
+vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
+vp6a_decoder_select="vp6_decoder"
+vp6f_decoder_select="vp6_decoder"
+vp7_decoder_select="h264pred videodsp vp8dsp"
+vp8_decoder_select="h264pred videodsp vp8dsp"
+vp9_decoder_select="videodsp vp9_parser"
+webp_decoder_select="vp8_decoder exif"
+wmalossless_decoder_select="llauddsp"
+wmapro_decoder_select="mdct sinewin wma_freqs"
+wmav1_decoder_select="mdct sinewin wma_freqs"
+wmav1_encoder_select="mdct sinewin wma_freqs"
+wmav2_decoder_select="mdct sinewin wma_freqs"
+wmav2_encoder_select="mdct sinewin wma_freqs"
+wmavoice_decoder_select="lsp rdft dct mdct sinewin"
+wmv1_decoder_select="h263_decoder"
+wmv1_encoder_select="h263_encoder"
+wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
+wmv2_encoder_select="h263_encoder wmv2dsp"
+wmv3_decoder_select="vc1_decoder"
+wmv3image_decoder_select="wmv3_decoder"
+xma1_decoder_select="wmapro_decoder"
+xma2_decoder_select="wmapro_decoder"
+zerocodec_decoder_select="zlib"
+zlib_decoder_select="zlib"
+zlib_encoder_select="zlib"
+zmbv_decoder_select="zlib"
+zmbv_encoder_select="zlib"
+
+# platform codecs
+audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
+audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
+
+# hardware accelerators
+crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
+cuvid_deps="cuda"
+d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
+dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
+vaapi_deps="va_va_h"
+vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
+vda_framework_extralibs="-framework VideoDecodeAcceleration"
+vda_deps="vda_framework pthreads"
+vda_extralibs="-framework CoreFoundation -framework QuartzCore"
+vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
+videotoolbox_hwaccel_deps="videotoolbox pthreads"
+videotoolbox_hwaccel_extralibs="-framework QuartzCore"
+xvmc_deps="X11_extensions_XvMClib_h"
+
+h263_vaapi_hwaccel_deps="vaapi"
+h263_vaapi_hwaccel_select="h263_decoder"
+h263_videotoolbox_hwaccel_deps="videotoolbox"
+h263_videotoolbox_hwaccel_select="h263_decoder"
+h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
+h264_cuvid_hwaccel_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_d3d11va_hwaccel_deps="d3d11va"
+h264_d3d11va_hwaccel_select="h264_decoder"
+h264_dxva2_hwaccel_deps="dxva2"
+h264_dxva2_hwaccel_select="h264_decoder"
+h264_mediacodec_decoder_deps="mediacodec"
+h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
+h264_mmal_decoder_deps="mmal"
+h264_mmal_decoder_select="mmal"
+h264_mmal_hwaccel_deps="mmal"
+h264_omx_encoder_deps="omx"
+h264_qsv_hwaccel_deps="libmfx"
+h264_vaapi_hwaccel_deps="vaapi"
+h264_vaapi_hwaccel_select="h264_decoder"
+h264_vda_decoder_deps="vda"
+h264_vda_decoder_select="h264_decoder"
+h264_vda_hwaccel_deps="vda"
+h264_vda_hwaccel_select="h264_decoder"
+h264_vda_old_hwaccel_deps="vda"
+h264_vda_old_hwaccel_select="h264_decoder"
+h264_vdpau_decoder_deps="vdpau"
+h264_vdpau_decoder_select="h264_decoder"
+h264_vdpau_hwaccel_deps="vdpau"
+h264_vdpau_hwaccel_select="h264_decoder"
+h264_videotoolbox_hwaccel_deps="videotoolbox"
+h264_videotoolbox_hwaccel_select="h264_decoder"
+hevc_cuvid_hwaccel_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
+hevc_d3d11va_hwaccel_select="hevc_decoder"
+hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
+hevc_dxva2_hwaccel_select="hevc_decoder"
+hevc_qsv_hwaccel_deps="libmfx"
+hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
+hevc_vaapi_hwaccel_select="hevc_decoder"
+hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
+hevc_vdpau_hwaccel_select="hevc_decoder"
+mpeg_vdpau_decoder_deps="vdpau"
+mpeg_vdpau_decoder_select="mpeg2video_decoder"
+mpeg_xvmc_hwaccel_deps="xvmc"
+mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg1_vdpau_decoder_deps="vdpau"
+mpeg1_vdpau_decoder_select="mpeg1video_decoder"
+mpeg1_vdpau_hwaccel_deps="vdpau"
+mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
+mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
+mpeg1_xvmc_hwaccel_deps="xvmc"
+mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
+mpeg2_crystalhd_decoder_select="crystalhd"
+mpeg2_d3d11va_hwaccel_deps="d3d11va"
+mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
+mpeg2_dxva2_hwaccel_deps="dxva2"
+mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
+mpeg2_mmal_decoder_deps="mmal"
+mpeg2_mmal_decoder_select="mmal"
+mpeg2_mmal_hwaccel_deps="mmal"
+mpeg2_qsv_hwaccel_deps="libmfx"
+mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
+mpeg2_vaapi_hwaccel_deps="vaapi"
+mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
+mpeg2_vdpau_hwaccel_deps="vdpau"
+mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
+mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
+mpeg2_xvmc_hwaccel_deps="xvmc"
+mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
+mpeg4_crystalhd_decoder_select="crystalhd"
+mpeg4_mmal_decoder_deps="mmal"
+mpeg4_mmal_decoder_select="mmal"
+mpeg4_mmal_hwaccel_deps="mmal"
+mpeg4_omx_encoder_deps="omx"
+mpeg4_vaapi_hwaccel_deps="vaapi"
+mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
+mpeg4_vdpau_decoder_deps="vdpau"
+mpeg4_vdpau_decoder_select="mpeg4_decoder"
+mpeg4_vdpau_hwaccel_deps="vdpau"
+mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
+mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
+mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
+msmpeg4_crystalhd_decoder_select="crystalhd"
+vc1_crystalhd_decoder_select="crystalhd"
+vc1_cuvid_hwaccel_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_d3d11va_hwaccel_deps="d3d11va"
+vc1_d3d11va_hwaccel_select="vc1_decoder"
+vc1_dxva2_hwaccel_deps="dxva2"
+vc1_dxva2_hwaccel_select="vc1_decoder"
+vc1_mmal_decoder_deps="mmal"
+vc1_mmal_decoder_select="mmal"
+vc1_mmal_hwaccel_deps="mmal"
+vc1_qsv_hwaccel_deps="libmfx"
+vc1_qsv_hwaccel_select="qsvdec_vc1"
+vc1_vaapi_hwaccel_deps="vaapi"
+vc1_vaapi_hwaccel_select="vc1_decoder"
+vc1_vdpau_decoder_deps="vdpau"
+vc1_vdpau_decoder_select="vc1_decoder"
+vc1_vdpau_hwaccel_deps="vdpau"
+vc1_vdpau_hwaccel_select="vc1_decoder"
+vp8_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_hwaccel_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
+vp9_d3d11va_hwaccel_select="vp9_decoder"
+vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
+vp9_dxva2_hwaccel_select="vp9_decoder"
+vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
+vp9_vaapi_hwaccel_select="vp9_decoder"
+wmv3_crystalhd_decoder_select="crystalhd"
+wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
+wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
+wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
+wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
+wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
+
+# hardware-accelerated codecs
+omx_deps="dlopen pthreads"
+omx_extralibs='$ldl'
+qsvdec_select="qsv"
+qsvenc_select="qsv"
+vaapi_encode_deps="vaapi"
+
+hwupload_cuda_filter_deps="cuda"
+scale_npp_filter_deps="cuda libnpp"
+
+nvenc_encoder_deps="nvenc"
+h264_cuvid_decoder_deps="cuda cuvid CUVIDH264PICPARAMS"
+h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
+h264_nvenc_encoder_deps="nvenc"
+h264_qsv_decoder_deps="libmfx"
+h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
+h264_qsv_encoder_deps="libmfx"
+h264_qsv_encoder_select="qsvenc"
+h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
+h264_vaapi_encoder_select="vaapi_encode golomb"
+
+hevc_cuvid_decoder_deps="cuda cuvid CUVIDHEVCPICPARAMS"
+hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
+hevc_nvenc_encoder_deps="nvenc"
+hevc_qsv_decoder_deps="libmfx"
+hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
+hevc_qsv_encoder_deps="libmfx"
+hevc_qsv_encoder_select="qsvenc"
+hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
+hevc_vaapi_encoder_select="vaapi_encode golomb"
+mpeg2_qsv_decoder_deps="libmfx"
+mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
+mpeg2_qsv_encoder_deps="libmfx"
+mpeg2_qsv_encoder_select="qsvenc"
+nvenc_h264_encoder_deps="nvenc"
+nvenc_hevc_encoder_deps="nvenc"
+
+vc1_cuvid_decoder_deps="cuda cuvid CUVIDVC1PICPARAMS"
+vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
+vp8_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
+vp9_cuvid_decoder_deps="cuda cuvid CUVIDVP9PICPARAMS"
+vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
+
+# parsers
+h264_parser_select="golomb h264dsp"
+hevc_parser_select="golomb"
+mpegvideo_parser_select="mpegvideo"
+mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
+vc1_parser_select="vc1dsp"
+
+# bitstream_filters
+mjpeg2jpeg_bsf_select="jpegtables"
+
+# external libraries
+aac_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_deps="audiotoolbox"
+ac3_at_decoder_select="ac3_parser"
+adpcm_ima_qt_at_decoder_deps="audiotoolbox"
+alac_at_decoder_deps="audiotoolbox"
+amr_nb_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_deps="audiotoolbox"
+eac3_at_decoder_select="ac3_parser"
+gsm_ms_at_decoder_deps="audiotoolbox"
+ilbc_at_decoder_deps="audiotoolbox"
+mp1_at_decoder_deps="audiotoolbox"
+mp2_at_decoder_deps="audiotoolbox"
+mp3_at_decoder_deps="audiotoolbox"
+pcm_alaw_at_decoder_deps="audiotoolbox"
+pcm_mulaw_at_decoder_deps="audiotoolbox"
+qdmc_at_decoder_deps="audiotoolbox"
+qdm2_at_decoder_deps="audiotoolbox"
+aac_at_encoder_deps="audiotoolbox"
+aac_at_encoder_select="audio_frame_queue"
+alac_at_encoder_deps="audiotoolbox"
+alac_at_encoder_select="audio_frame_queue"
+ilbc_at_encoder_deps="audiotoolbox"
+ilbc_at_encoder_select="audio_frame_queue"
+pcm_alaw_at_encoder_deps="audiotoolbox"
+pcm_alaw_at_encoder_select="audio_frame_queue"
+pcm_mulaw_at_encoder_deps="audiotoolbox"
+pcm_mulaw_at_encoder_select="audio_frame_queue"
+chromaprint_muxer_deps="chromaprint"
+h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
+libcelt_decoder_deps="libcelt"
+libfaac_encoder_deps="libfaac"
+libfaac_encoder_select="audio_frame_queue"
+libfdk_aac_decoder_deps="libfdk_aac"
+libfdk_aac_encoder_deps="libfdk_aac"
+libfdk_aac_encoder_select="audio_frame_queue"
+libgme_demuxer_deps="libgme"
+libgsm_decoder_deps="libgsm"
+libgsm_encoder_deps="libgsm"
+libgsm_ms_decoder_deps="libgsm"
+libgsm_ms_encoder_deps="libgsm"
+libilbc_decoder_deps="libilbc"
+libilbc_encoder_deps="libilbc"
+libkvazaar_encoder_deps="libkvazaar"
+libmodplug_demuxer_deps="libmodplug"
+libmp3lame_encoder_deps="libmp3lame"
+libmp3lame_encoder_select="audio_frame_queue"
+libopencore_amrnb_decoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_deps="libopencore_amrnb"
+libopencore_amrnb_encoder_select="audio_frame_queue"
+libopencore_amrwb_decoder_deps="libopencore_amrwb"
+libopenh264_encoder_deps="libopenh264"
+libopenjpeg_decoder_deps="libopenjpeg"
+libopenjpeg_encoder_deps="libopenjpeg"
+libopus_decoder_deps="libopus"
+libopus_encoder_deps="libopus"
+libopus_encoder_select="audio_frame_queue"
+libschroedinger_decoder_deps="libschroedinger"
+libschroedinger_encoder_deps="libschroedinger"
+libshine_encoder_deps="libshine"
+libshine_encoder_select="audio_frame_queue"
+libspeex_decoder_deps="libspeex"
+libspeex_encoder_deps="libspeex"
+libspeex_encoder_select="audio_frame_queue"
+libtheora_encoder_deps="libtheora"
+libtwolame_encoder_deps="libtwolame"
+libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
+libvorbis_decoder_deps="libvorbis"
+libvorbis_encoder_deps="libvorbis"
+libvorbis_encoder_select="audio_frame_queue"
+libvpx_vp8_decoder_deps="libvpx"
+libvpx_vp8_encoder_deps="libvpx"
+libvpx_vp9_decoder_deps="libvpx"
+libvpx_vp9_encoder_deps="libvpx"
+libwavpack_encoder_deps="libwavpack"
+libwebp_encoder_deps="libwebp"
+libwebp_anim_encoder_deps="libwebp"
+libx262_encoder_deps="libx262"
+libx264_encoder_deps="libx264"
+libx264rgb_encoder_deps="libx264 x264_csp_bgr"
+libx264rgb_encoder_select="libx264_encoder"
+libx265_encoder_deps="libx265"
+libxavs_encoder_deps="libxavs"
+libxvid_encoder_deps="libxvid"
+libzvbi_teletext_decoder_deps="libzvbi"
+videotoolbox_deps="VideoToolbox_VideoToolbox_h"
+videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
+videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
+videotoolbox_encoder_suggest="vda_framework vt_bt2020"
+vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
+
+# demuxers / muxers
+ac3_demuxer_select="ac3_parser"
+asf_demuxer_select="riffdec"
+asf_o_demuxer_select="riffdec"
+asf_muxer_select="riffenc"
+asf_stream_muxer_select="asf_muxer"
+avi_demuxer_select="iso_media riffdec exif"
+avi_muxer_select="riffenc"
+avisynth_demuxer_deps="avisynth"
+avisynth_demuxer_select="riffdec"
+caf_demuxer_select="iso_media riffdec"
+dash_muxer_select="mp4_muxer"
+dirac_demuxer_select="dirac_parser"
+dts_demuxer_select="dca_parser"
+dtshd_demuxer_select="dca_parser"
+dv_demuxer_select="dvprofile"
+dv_muxer_select="dvprofile"
+dxa_demuxer_select="riffdec"
+eac3_demuxer_select="ac3_parser"
+f4v_muxer_select="mov_muxer"
+flac_demuxer_select="flac_parser"
+hds_muxer_select="flv_muxer"
+hls_muxer_select="mpegts_muxer"
+image2_alias_pix_demuxer_select="image2_demuxer"
+image2_brender_pix_demuxer_select="image2_demuxer"
+ipod_muxer_select="mov_muxer"
+ismv_muxer_select="mov_muxer"
+libnut_demuxer_deps="libnut"
+libnut_muxer_deps="libnut"
+matroska_audio_muxer_select="matroska_muxer"
+matroska_demuxer_select="iso_media riffdec"
+matroska_demuxer_suggest="bzlib lzo zlib"
+matroska_muxer_select="iso_media riffenc"
+mmf_muxer_select="riffenc"
+mov_demuxer_select="iso_media riffdec"
+mov_demuxer_suggest="zlib"
+mov_muxer_select="iso_media riffenc rtpenc_chain"
+mp3_demuxer_select="mpegaudio_parser"
+mp4_muxer_select="mov_muxer"
+mpegts_demuxer_select="iso_media"
+mpegts_muxer_select="adts_muxer latm_muxer"
+mpegtsraw_demuxer_select="mpegts_demuxer"
+mxf_d10_muxer_select="mxf_muxer"
+mxf_opatom_muxer_select="mxf_muxer"
+nut_muxer_select="riffenc"
+nuv_demuxer_select="riffdec"
+oga_muxer_select="ogg_muxer"
+ogg_demuxer_select="dirac_parse"
+opus_muxer_select="ogg_muxer"
+psp_muxer_select="mov_muxer"
+rtp_demuxer_select="sdp_demuxer"
+rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
+rtsp_demuxer_select="http_protocol rtpdec"
+rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
+sap_demuxer_select="sdp_demuxer"
+sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
+sdp_demuxer_select="rtpdec"
+smoothstreaming_muxer_select="ismv_muxer"
+spdif_muxer_select="aac_parser"
+spx_muxer_select="ogg_muxer"
+swf_demuxer_suggest="zlib"
+tak_demuxer_select="tak_parser"
+tg2_muxer_select="mov_muxer"
+tgp_muxer_select="mov_muxer"
+vobsub_demuxer_select="mpegps_demuxer"
+w64_demuxer_select="wav_demuxer"
+w64_muxer_select="wav_muxer"
+wav_demuxer_select="riffdec"
+wav_muxer_select="riffenc"
+webm_muxer_select="iso_media riffenc"
+webm_dash_manifest_demuxer_select="matroska_demuxer"
+wtv_demuxer_select="mpegts_demuxer riffdec"
+wtv_muxer_select="mpegts_muxer riffenc"
+xmv_demuxer_select="riffdec"
+xwma_demuxer_select="riffdec"
+
+# indevs / outdevs
+alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
+alsa_outdev_deps="alsa_asoundlib_h"
+avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
+avfoundation_indev_select="avfoundation"
+bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
+caca_outdev_deps="libcaca"
+decklink_indev_deps="decklink pthreads"
+decklink_indev_extralibs="-lstdc++"
+decklink_outdev_deps="decklink pthreads"
+decklink_outdev_extralibs="-lstdc++"
+dshow_indev_deps="IBaseFilter"
+dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
+dv1394_indev_deps="dv1394"
+dv1394_indev_select="dv_demuxer"
+fbdev_indev_deps="linux_fb_h"
+fbdev_outdev_deps="linux_fb_h"
+gdigrab_indev_deps="CreateDIBSection"
+gdigrab_indev_extralibs="-lgdi32"
+gdigrab_indev_select="bmp_decoder"
+iec61883_indev_deps="libiec61883"
+jack_indev_deps="jack_jack_h"
+jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
+lavfi_indev_deps="avfilter"
+libcdio_indev_deps="libcdio"
+libdc1394_indev_deps="libdc1394"
+libv4l2_indev_deps="libv4l2"
+openal_indev_deps="openal"
+opengl_outdev_deps="opengl"
+oss_indev_deps_any="soundcard_h sys_soundcard_h"
+oss_outdev_deps_any="soundcard_h sys_soundcard_h"
+pulse_indev_deps="libpulse"
+pulse_outdev_deps="libpulse"
+qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
+qtkit_indev_select="qtkit"
+sdl_outdev_deps="sdl"
+sndio_indev_deps="sndio_h"
+sndio_outdev_deps="sndio_h"
+v4l_indev_deps="linux_videodev_h"
+v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
+v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
+vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
+vfwcap_indev_extralibs="-lavicap32"
+x11grab_indev_deps="x11grab"
+x11grab_xcb_indev_deps="libxcb"
+xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
+xv_outdev_extralibs="-lXv -lX11 -lXext"
+
+# protocols
+async_protocol_deps="threads"
+bluray_protocol_deps="libbluray"
+ffrtmpcrypt_protocol_deps="!librtmp_protocol"
+ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
+ffrtmpcrypt_protocol_select="tcp_protocol"
+ffrtmphttp_protocol_deps="!librtmp_protocol"
+ffrtmphttp_protocol_select="http_protocol"
+ftp_protocol_select="tcp_protocol"
+gopher_protocol_select="network"
+http_protocol_select="tcp_protocol"
+httpproxy_protocol_select="tcp_protocol"
+https_protocol_select="tls_protocol"
+icecast_protocol_select="http_protocol"
+librtmp_protocol_deps="librtmp"
+librtmpe_protocol_deps="librtmp"
+librtmps_protocol_deps="librtmp"
+librtmpt_protocol_deps="librtmp"
+librtmpte_protocol_deps="librtmp"
+libsmbclient_protocol_deps="libsmbclient gplv3"
+libssh_protocol_deps="libssh"
+mmsh_protocol_select="http_protocol"
+mmst_protocol_select="network"
+rtmp_protocol_deps="!librtmp_protocol"
+rtmp_protocol_select="tcp_protocol"
+rtmpe_protocol_select="ffrtmpcrypt_protocol"
+rtmps_protocol_deps="!librtmp_protocol"
+rtmps_protocol_select="tls_protocol"
+rtmpt_protocol_select="ffrtmphttp_protocol"
+rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
+rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
+rtp_protocol_select="udp_protocol"
+sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
+sctp_protocol_select="network"
+srtp_protocol_select="rtp_protocol srtp"
+tcp_protocol_select="network"
+tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
+tls_gnutls_protocol_select="tcp_protocol"
+tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
+tls_openssl_protocol_select="tcp_protocol"
+tls_schannel_protocol_deps="schannel"
+tls_schannel_protocol_select="tcp_protocol"
+tls_securetransport_protocol_deps="securetransport"
+tls_securetransport_protocol_select="tcp_protocol"
+tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
+udp_protocol_select="network"
+udplite_protocol_select="network"
+unix_protocol_deps="sys_un_h"
+unix_protocol_select="network"
+
+# filters
+afftfilt_filter_deps="avcodec"
+afftfilt_filter_select="fft"
+amovie_filter_deps="avcodec avformat"
+aresample_filter_deps="swresample"
+ass_filter_deps="libass"
+asyncts_filter_deps="avresample"
+atempo_filter_deps="avcodec"
+atempo_filter_select="rdft"
+azmq_filter_deps="libzmq"
+blackframe_filter_deps="gpl"
+boxblur_filter_deps="gpl"
+bs2b_filter_deps="libbs2b"
+colormatrix_filter_deps="gpl"
+cover_rect_filter_deps="avcodec avformat gpl"
+cropdetect_filter_deps="gpl"
+delogo_filter_deps="gpl"
+deshake_filter_select="pixelutils"
+drawtext_filter_deps="libfreetype"
+ebur128_filter_deps="gpl"
+eq_filter_deps="gpl"
+fftfilt_filter_deps="avcodec"
+fftfilt_filter_select="rdft"
+find_rect_filter_deps="avcodec avformat gpl"
+firequalizer_filter_deps="avcodec"
+firequalizer_filter_select="rdft"
+flite_filter_deps="libflite"
+framerate_filter_select="pixelutils"
+frei0r_filter_deps="frei0r dlopen"
+frei0r_src_filter_deps="frei0r dlopen"
+fspp_filter_deps="gpl"
+geq_filter_deps="gpl"
+histeq_filter_deps="gpl"
+hqdn3d_filter_deps="gpl"
+interlace_filter_deps="gpl"
+kerndeint_filter_deps="gpl"
+ladspa_filter_deps="ladspa dlopen"
+loudnorm_filter_deps="libebur128"
+mcdeint_filter_deps="avcodec gpl"
+movie_filter_deps="avcodec avformat"
+mpdecimate_filter_deps="gpl"
+mpdecimate_filter_select="pixelutils"
+mptestsrc_filter_deps="gpl"
+negate_filter_deps="lut_filter"
+nnedi_filter_deps="gpl"
+ocr_filter_deps="libtesseract"
+ocv_filter_deps="libopencv"
+owdenoise_filter_deps="gpl"
+pan_filter_deps="swresample"
+perspective_filter_deps="gpl"
+phase_filter_deps="gpl"
+pp7_filter_deps="gpl"
+pp_filter_deps="gpl postproc"
+pullup_filter_deps="gpl"
+removelogo_filter_deps="avcodec avformat swscale"
+repeatfields_filter_deps="gpl"
+resample_filter_deps="avresample"
+rubberband_filter_deps="librubberband"
+sab_filter_deps="gpl swscale"
+scale2ref_filter_deps="swscale"
+scale_filter_deps="swscale"
+select_filter_select="pixelutils"
+showcqt_filter_deps="avcodec avformat swscale"
+showcqt_filter_select="fft"
+showfreqs_filter_deps="avcodec"
+showfreqs_filter_select="fft"
+showspectrum_filter_deps="avcodec"
+showspectrum_filter_select="fft"
+showspectrumpic_filter_deps="avcodec"
+showspectrumpic_filter_select="fft"
+smartblur_filter_deps="gpl swscale"
+sofalizer_filter_deps="netcdf avcodec"
+sofalizer_filter_select="fft"
+spectrumsynth_filter_deps="avcodec"
+spectrumsynth_filter_select="fft"
+spp_filter_deps="gpl avcodec"
+spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
+stereo3d_filter_deps="gpl"
+subtitles_filter_deps="avformat avcodec libass"
+super2xsai_filter_deps="gpl"
+pixfmts_super2xsai_test_deps="super2xsai_filter"
+tinterlace_filter_deps="gpl"
+tinterlace_merge_test_deps="tinterlace_filter"
+tinterlace_pad_test_deps="tinterlace_filter"
+uspp_filter_deps="gpl avcodec"
+vidstabdetect_filter_deps="libvidstab"
+vidstabtransform_filter_deps="libvidstab"
+zmq_filter_deps="libzmq"
+zoompan_filter_deps="swscale"
+zscale_filter_deps="libzimg"
+scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
+
+# examples
+avcodec_example_deps="avcodec avutil"
+avio_dir_cmd="avformat avutil"
+avio_reading="avformat avcodec avutil"
+decoding_encoding_example_deps="avcodec avformat avutil"
+demuxing_decoding_example_deps="avcodec avformat avutil"
+extract_mvs_example_deps="avcodec avformat avutil"
+filter_audio_example_deps="avfilter avutil"
+filtering_audio_example_deps="avfilter avcodec avformat avutil"
+filtering_video_example_deps="avfilter avcodec avformat avutil"
+metadata_example_deps="avformat avutil"
+muxing_example_deps="avcodec avformat avutil swscale"
+qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
+remuxing_example_deps="avcodec avformat avutil"
+resampling_audio_example_deps="avutil swresample"
+scaling_video_example_deps="avutil swscale"
+transcode_aac_example_deps="avcodec avformat swresample"
+transcoding_example_deps="avfilter avcodec avformat avutil"
+
+# libraries, in linking order
+avcodec_deps="avutil"
+avdevice_deps="avformat avcodec avutil"
+avfilter_deps="avutil"
+avformat_deps="avcodec avutil"
+avresample_deps="avutil"
+postproc_deps="avutil gpl"
+swresample_deps="avutil"
+swscale_deps="avutil"
+
+# programs
+ffmpeg_deps="avcodec avfilter avformat swresample"
+ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
+               null_filter
+               setpts_filter trim_filter"
+ffplay_deps="avcodec avformat swscale swresample sdl"
+ffplay_libs='$sdl_libs'
+ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
+ffprobe_deps="avcodec avformat"
+ffserver_deps="avformat fork sarestart"
+ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
+
+# documentation
+podpages_deps="perl"
+manpages_deps="perl pod2man"
+htmlpages_deps="perl"
+htmlpages_deps_any="makeinfo_html texi2html"
+txtpages_deps="perl makeinfo"
+doc_deps_any="manpages htmlpages podpages txtpages"
+
+# default parameters
+
+logfile="config.log"
+
+# installation paths
+prefix_default="/usr/local"
+bindir_default='${prefix}/bin'
+datadir_default='${prefix}/share/ffmpeg'
+docdir_default='${prefix}/share/doc/ffmpeg'
+incdir_default='${prefix}/include'
+libdir_default='${prefix}/lib'
+mandir_default='${prefix}/share/man'
+
+# toolchain
+ar_default="ar"
+cc_default="gcc"
+cxx_default="g++"
+host_cc_default="gcc"
+cp_f="cp -f"
+doxygen_default="doxygen"
+install="install"
+ln_s_default="ln -s -f"
+nm_default="nm -g"
+objformat="elf"
+pkg_config_default=pkg-config
+ranlib_default="ranlib"
+strip_default="strip"
+yasmexe_default="yasm"
+windres_default="windres"
+
+# OS
+target_os_default=$(tolower $(uname -s))
+host_os=$target_os_default
+
+# machine
+if test "$target_os_default" = aix; then
+    arch_default=$(uname -p)
+    strip_default="strip -X32_64"
+else
+    arch_default=$(uname -m)
+fi
+cpu="generic"
+intrinsics="none"
+
+# configurable options
+enable $PROGRAM_LIST
+enable $DOCUMENT_LIST
+enable $EXAMPLE_LIST
+enable $(filter_out avresample $LIBRARY_LIST)
+enable stripping
+
+enable asm
+enable debug
+enable doc
+enable faan faandct faanidct
+enable optimizations
+enable runtime_cpudetect
+enable safe_bitstream_reader
+enable static
+enable swscale_alpha
+enable valgrind_backtrace
+
+sws_max_filter_size_default=256
+set_default sws_max_filter_size
+
+# Enable platform codecs by default.
+enable audiotoolbox
+
+# Enable hwaccels by default.
+enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
+enable xlib
+
+enable vda_framework videotoolbox videotoolbox_encoder
+
+# build settings
+SHFLAGS='-shared -Wl,-soname,$$(@F)'
+LIBPREF="lib"
+LIBSUF=".a"
+FULLNAME='$(NAME)$(BUILDSUF)'
+LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
+SLIBPREF="lib"
+SLIBSUF=".so"
+SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
+SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
+SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
+LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
+SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
+SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
+
+asflags_filter=echo
+cflags_filter=echo
+ldflags_filter=echo
+
+AS_C='-c'
+AS_O='-o $@'
+CC_C='-c'
+CC_E='-E -o $@'
+CC_O='-o $@'
+CXX_C='-c'
+CXX_O='-o $@'
+OBJCC_C='-c'
+OBJCC_E='-E -o $@'
+OBJCC_O='-o $@'
+LD_O='-o $@'
+LD_LIB='-l%'
+LD_PATH='-L'
+HOSTCC_C='-c'
+HOSTCC_E='-E -o $@'
+HOSTCC_O='-o $@'
+HOSTLD_O='-o $@'
+
+host_libs='-lm'
+host_cflags_filter=echo
+host_ldflags_filter=echo
+
+target_path='$(CURDIR)'
+
+# since the object filename is not given with the -MM flag, the compiler
+# is only able to print the basename, and we must add the path ourselves
+DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
+DEPFLAGS='-MM'
+
+# find source path
+if test -f configure; then
+    source_path=.
+else
+    source_path=$(cd $(dirname "$0"); pwd)
+    case "$source_path" in
+        *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
+    esac
+    test -e "$source_path/config.h" &&
+        die "Out of tree builds are impossible with config.h in source dir."
+fi
+
+for v in "$@"; do
+    r=${v#*=}
+    l=${v%"$r"}
+    r=$(sh_quote "$r")
+    FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
+done
+
+find_things(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
+}
+
+ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
+DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
+HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
+PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
+MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
+DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
+OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
+INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
+FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
+
+find_things_extern(){
+    thing=$1
+    pattern=$2
+    file=$source_path/$3
+    sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
+}
+
+BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
+PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
+
+ALL_COMPONENTS="
+    $BSF_LIST
+    $DECODER_LIST
+    $DEMUXER_LIST
+    $ENCODER_LIST
+    $FILTER_LIST
+    $HWACCEL_LIST
+    $INDEV_LIST
+    $MUXER_LIST
+    $OUTDEV_LIST
+    $PARSER_LIST
+    $PROTOCOL_LIST
+"
+
+for n in $COMPONENT_LIST; do
+    v=$(toupper ${n%s})_LIST
+    eval enable \$$v
+    eval ${n}_if_any="\$$v"
+done
+
+enable $ARCH_EXT_LIST
+
+die_unknown(){
+    echo "Unknown option \"$1\"."
+    echo "See $0 --help for available options."
+    exit 1
+}
+
+print_in_columns() {
+    cols=$(expr $ncols / 24)
+    cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
+}
+
+show_list() {
+    suffix=_$1
+    shift
+    echo $* | sed s/$suffix//g | print_in_columns
+    exit 0
+}
+
+rand_list(){
+    IFS=', '
+    set -- $*
+    unset IFS
+    for thing; do
+        comp=${thing%:*}
+        prob=${thing#$comp}
+        prob=${prob#:}
+        is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
+        echo "prob ${prob:-0.5}"
+        printf '%s\n' $comp
+    done
+}
+
+do_random(){
+    action=$1
+    shift
+    random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
+    $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
+}
+
+for opt do
+    optval="${opt#*=}"
+    case "$opt" in
+        --extra-ldflags=*)
+            add_ldflags $optval
+        ;;
+        --extra-ldexeflags=*)
+            add_ldexeflags $optval
+        ;;
+        --extra-ldlibflags=*)
+            add_ldlibflags $optval
+        ;;
+        --extra-libs=*)
+            add_extralibs $optval
+        ;;
+        --disable-devices)
+            disable $INDEV_LIST $OUTDEV_LIST
+        ;;
+        --enable-debug=*)
+            debuglevel="$optval"
+        ;;
+        --disable-programs)
+            disable $PROGRAM_LIST
+        ;;
+        --disable-everything)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+        ;;
+        --disable-all)
+            map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
+            disable $LIBRARY_LIST $PROGRAM_LIST doc
+            enable avutil
+        ;;
+        --enable-random|--disable-random)
+            action=${opt%%-random}
+            do_random ${action#--} $COMPONENT_LIST
+        ;;
+        --enable-random=*|--disable-random=*)
+            action=${opt%%-random=*}
+            do_random ${action#--} $optval
+        ;;
+        --enable-*=*|--disable-*=*)
+            eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
+            is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
+            eval list=\$$(toupper $thing)_LIST
+            name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
+            list=$(filter "$name" $list)
+            [ "$list" = "" ] && warn "Option $opt did not match anything"
+            $action $list
+        ;;
+        --enable-?*|--disable-?*)
+            eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
+            if is_in $option $COMPONENT_LIST; then
+                test $action = disable && action=unset
+                eval $action \$$(toupper ${option%s})_LIST
+            elif is_in $option $CMDLINE_SELECT; then
+                $action $option
+            else
+                die_unknown $opt
+            fi
+        ;;
+        --list-*)
+            NAME="${opt#--list-}"
+            is_in $NAME $COMPONENT_LIST || die_unknown $opt
+            NAME=${NAME%s}
+            eval show_list $NAME \$$(toupper $NAME)_LIST
+        ;;
+        --help|-h) show_help
+        ;;
+        --fatal-warnings) enable fatal_warnings
+        ;;
+        *)
+            optname="${opt%%=*}"
+            optname="${optname#--}"
+            optname=$(echo "$optname" | sed 's/-/_/g')
+            if is_in $optname $CMDLINE_SET; then
+                eval $optname='$optval'
+            elif is_in $optname $CMDLINE_APPEND; then
+                append $optname "$optval"
+            else
+                die_unknown $opt
+            fi
+        ;;
+    esac
+done
+
+for e in $env; do
+    eval "export $e"
+done
+
+disabled logging && logfile=/dev/null
+
+# Disable all the library-specific components if the library itself
+# is disabled, see AVCODEC_LIST and following _LIST variables.
+
+disable_components(){
+    disabled ${1} && disable $(
+        eval components="\$$(toupper ${1})_COMPONENTS"
+        map 'eval echo \${$(toupper ${v%s})_LIST}' $components
+    )
+}
+
+map 'disable_components $v' $LIBRARY_LIST
+
+echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
+set >> $logfile
+
+test -n "$valgrind" && toolchain="valgrind-memcheck"
+
+case "$toolchain" in
+    *-asan)
+        cc_default="${toolchain%-asan}"
+        add_cflags  -fsanitize=address
+        add_ldflags -fsanitize=address
+    ;;
+    *-msan)
+        cc_default="${toolchain%-msan}"
+        add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
+        add_ldflags -fsanitize=memory
+    ;;
+    *-tsan)
+        cc_default="${toolchain%-tsan}"
+        add_cflags  -fsanitize=thread -pie
+        add_ldflags -fsanitize=thread -pie
+        case "$toolchain" in
+            gcc-tsan)
+                add_cflags  -fPIC
+                add_ldflags -fPIC
+                ;;
+        esac
+    ;;
+    *-usan)
+        cc_default="${toolchain%-usan}"
+        add_cflags  -fsanitize=undefined
+        add_ldflags -fsanitize=undefined
+    ;;
+    valgrind-*)
+        target_exec_default="valgrind"
+        case "$toolchain" in
+            valgrind-massif)
+                target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
+                ;;
+            valgrind-memcheck)
+                target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
+                ;;
+        esac
+    ;;
+    msvc)
+        # Check whether the current MSVC version needs the C99 converter.
+        # From MSVC 2013 (compiler major version 18) onwards, it does actually
+        # support enough of C99 to build ffmpeg. Default to the new
+        # behaviour if the regexp was unable to match anything, since this
+        # successfully parses the version number of existing supported
+        # versions that require the converter (MSVC 2010 and 2012).
+        cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
+        if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
+            cc_default="cl"
+        else
+            cc_default="c99wrap cl"
+        fi
+        ld_default="$source_path/compat/windows/mslink"
+        nm_default="dumpbin -symbols"
+        ar_default="lib"
+        case "$arch" in
+        arm*)
+            as_default="armasm"
+            ;;
+        esac
+        target_os_default="win32"
+        # Use a relative path for TMPDIR. This makes sure all the
+        # ffconf temp files are written with a relative path, avoiding
+        # issues with msys/win32 path conversion for MSVC parameters
+        # such as -Fo<file> or -out:<file>.
+        TMPDIR=.
+    ;;
+    icl)
+        cc_default="icl"
+        ld_default="xilink"
+        nm_default="dumpbin -symbols"
+        ar_default="xilib"
+        target_os_default="win32"
+        TMPDIR=.
+    ;;
+    gcov)
+        add_cflags  -fprofile-arcs -ftest-coverage
+        add_ldflags -fprofile-arcs -ftest-coverage
+    ;;
+    llvm-cov)
+        add_cflags -fprofile-arcs -ftest-coverage
+        add_ldflags --coverage
+    ;;
+    hardened)
+        add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
+        add_cflags   -fno-strict-overflow -fstack-protector-all
+        add_ldflags  -Wl,-z,relro -Wl,-z,now
+    ;;
+    ?*)
+        die "Unknown toolchain $toolchain"
+    ;;
+esac
+
+test -n "$cross_prefix" && enable cross_compile
+
+if enabled cross_compile; then
+    test -n "$arch" && test -n "$target_os" ||
+        die "Must specify target arch and OS when cross-compiling"
+fi
+
+ar_default="${cross_prefix}${ar_default}"
+cc_default="${cross_prefix}${cc_default}"
+cxx_default="${cross_prefix}${cxx_default}"
+nm_default="${cross_prefix}${nm_default}"
+pkg_config_default="${cross_prefix}${pkg_config_default}"
+if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
+    ranlib_default="${cross_prefix}${ranlib_default} -D"
+else
+    ranlib_default="${cross_prefix}${ranlib_default}"
+fi
+strip_default="${cross_prefix}${strip_default}"
+windres_default="${cross_prefix}${windres_default}"
+
+sysinclude_default="${sysroot}/usr/include"
+
+set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
+    target_exec target_os yasmexe
+enabled cross_compile || host_cc_default=$cc
+set_default host_cc
+
+pkg_config_fail_message=""
+if ! $pkg_config --version >/dev/null 2>&1; then
+    warn "$pkg_config not found, library detection may fail."
+    pkg_config=false
+elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
+    pkg_config_fail_message="
+Note: When building a static binary, add --pkg-config-flags=\"--static\"."
+fi
+
+if test $doxygen != $doxygen_default && \
+  ! $doxygen --version >/dev/null 2>&1; then
+    warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
+fi
+
+exesuf() {
+    case $1 in
+        mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
+    esac
+}
+
+EXESUF=$(exesuf $target_os)
+HOSTEXESUF=$(exesuf $host_os)
+
+# set temporary file name
+: ${TMPDIR:=$TEMPDIR}
+: ${TMPDIR:=$TMP}
+: ${TMPDIR:=/tmp}
+
+if [ -n "$tempprefix" ] ; then
+    mktemp(){
+        echo $tempprefix.${HOSTNAME}.${UID}
+    }
+elif ! check_cmd mktemp -u XXXXXX; then
+    # simple replacement for missing mktemp
+    # NOT SAFE FOR GENERAL USE
+    mktemp(){
+        echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
+    }
+fi
+
+tmpfile(){
+    tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
+        (set -C; exec > $tmp) 2>/dev/null ||
+        die "Unable to create temporary file in $TMPDIR."
+    append TMPFILES $tmp
+    eval $1=$tmp
+}
+
+trap 'rm -f -- $TMPFILES' EXIT
+
+tmpfile TMPASM .asm
+tmpfile TMPC   .c
+tmpfile TMPCPP .cpp
+tmpfile TMPE   $EXESUF
+tmpfile TMPH   .h
+tmpfile TMPM   .m
+tmpfile TMPO   .o
+tmpfile TMPS   .S
+tmpfile TMPSH  .sh
+tmpfile TMPV   .ver
+
+unset -f mktemp
+
+chmod +x $TMPE
+
+# make sure we can execute files in $TMPDIR
+cat > $TMPSH 2>> $logfile <<EOF
+#! /bin/sh
+EOF
+chmod +x $TMPSH >> $logfile 2>&1
+if ! $TMPSH >> $logfile 2>&1; then
+    cat <<EOF
+Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
+variable to another directory and make sure that it is not mounted noexec.
+EOF
+    die "Sanity test failed."
+fi
+
+armasm_flags(){
+    for flag; do
+        case $flag in
+            # Filter out MSVC cl.exe options from cflags that shouldn't
+            # be passed to gas-preprocessor
+            -M[TD]*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+ccc_flags(){
+    for flag; do
+        case $flag in
+            -std=c99)           echo -c99                       ;;
+            -mcpu=*)            echo -arch ${flag#*=}           ;;
+            -mieee)             echo -ieee                      ;;
+            -O*|-fast)          echo $flag                      ;;
+            -fno-math-errno)    echo -assume nomath_errno       ;;
+            -g)                 echo -g3                        ;;
+            -Wall)              echo -msg_enable level2         ;;
+            -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
+            -Wl,*)              echo $flag                      ;;
+            -f*|-W*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
+cparser_flags(){
+    for flag; do
+        case $flag in
+            -Wno-switch)             echo -Wno-switch-enum ;;
+            -Wno-format-zero-length) ;;
+            -Wdisabled-optimization) ;;
+            -Wno-pointer-sign)       echo -Wno-other ;;
+            *)                       echo $flag ;;
+        esac
+    done
+}
+
+msvc_common_flags(){
+    for flag; do
+        case $flag in
+            # In addition to specifying certain flags under the compiler
+            # specific filters, they must be specified here as well or else the
+            # generic catch all at the bottom will print the original flag.
+            -Wall)                ;;
+            -std=c99)             ;;
+            # Common flags
+            -fomit-frame-pointer) ;;
+            -g)                   echo -Z7 ;;
+            -fno-math-errno)      ;;
+            -fno-common)          ;;
+            -fno-signed-zeros)    ;;
+            -fPIC)                ;;
+            -mthumb)              ;;
+            -march=*)             ;;
+            -lz)                  echo zlib.lib ;;
+            -lavifil32)           echo vfw32.lib ;;
+            -lavicap32)           echo vfw32.lib user32.lib ;;
+            -lx264)               echo libx264.lib ;;
+            -l*)                  echo ${flag#-l}.lib ;;
+            -LARGEADDRESSAWARE)   echo $flag ;;
+            -L*)                  echo -libpath:${flag#-L} ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+msvc_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
+                                       -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
+                                       -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
+                                       -wd4307 \
+                                       -wd4273 -wd4554 -wd4701 ;;
+        esac
+    done
+}
+
+icl_flags(){
+    msvc_common_flags "$@"
+    for flag; do
+        case $flag in
+            # Despite what Intel's documentation says -Wall, which is supported
+            # on Windows, does enable remarks so disable them here.
+            -Wall)                echo $flag -Qdiag-disable:remark ;;
+            -std=c99)             echo -Qstd=c99 ;;
+            -flto)                echo -ipo ;;
+        esac
+    done
+}
+
+icc_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -ipo ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+pgi_flags(){
+    for flag; do
+        case $flag in
+            -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
+            -fomit-frame-pointer) echo -Mnoframe ;;
+            -g)                   echo -gopt ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
+suncc_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    native)                   echo -xtarget=native       ;;
+                    v9|niagara)               echo -xarch=sparc          ;;
+                    ultrasparc)               echo -xarch=sparcvis       ;;
+                    ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
+                    i586|pentium)             echo -xchip=pentium        ;;
+                    i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
+                    pentium3*|c3-2)           echo -xtarget=pentium3     ;;
+                    pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
+                    pentium4*)          echo -xtarget=pentium4           ;;
+                    prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
+                    *-sse3)             echo -xarch=sse3                 ;;
+                    core2)              echo -xarch=ssse3 -xchip=core2   ;;
+                    bonnell)                   echo -xarch=ssse3         ;;
+                    corei7|nehalem)            echo -xtarget=nehalem     ;;
+                    westmere)                  echo -xtarget=westmere    ;;
+                    silvermont)                echo -xarch=sse4_2        ;;
+                    corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
+                    core-avx*|ivybridge|haswell|broadwell)
+                                               echo -xarch=avx           ;;
+                    amdfam10|barcelona)        echo -xtarget=barcelona   ;;
+                    btver1)                    echo -xarch=amdsse4a      ;;
+                    btver2|bdver*)             echo -xarch=avx           ;;
+                    athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
+                    k8|opteron|athlon64|athlon-fx)
+                                               echo -xarch=sse2a         ;;
+                    athlon*)                   echo -xarch=pentium_proa  ;;
+                esac
+                ;;
+            -std=c99)             echo -xc99              ;;
+            -fomit-frame-pointer) echo -xregs=frameptr    ;;
+            -fPIC)                echo -KPIC -xcode=pic32 ;;
+            -W*,*)                echo $flag              ;;
+            -f*-*|-W*|-mimpure-text)                      ;;
+            -shared)              echo -G                 ;;
+            *)                    echo $flag              ;;
+        esac
+    done
+}
+
+tms470_flags(){
+    for flag; do
+        case $flag in
+            -march=*|-mcpu=*)
+                case "${flag#*=}" in
+                    armv7-a|cortex-a*)      echo -mv=7a8 ;;
+                    armv7-r|cortex-r*)      echo -mv=7r4 ;;
+                    armv7-m|cortex-m*)      echo -mv=7m3 ;;
+                    armv6*|arm11*)          echo -mv=6   ;;
+                    armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
+                                            echo -mv=5e  ;;
+                    armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
+                esac
+                ;;
+            -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
+            -mfpu=vfp)      echo --float_support=vfpv2        ;;
+            -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
+            -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
+            -msoft-float)   echo --float_support=vfplib       ;;
+            -O[0-3]|-mf=*)  echo $flag                        ;;
+            -g)             echo -g -mn                       ;;
+            -pds=*)         echo $flag                        ;;
+            -D*|-I*)        echo $flag                        ;;
+            --gcc|--abi=*)  echo $flag                        ;;
+            -me)            echo $flag                        ;;
+        esac
+    done
+}
+
+probe_cc(){
+    pfx=$1
+    _cc=$2
+    first=$3
+
+    unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
+    unset _ld_o _ldflags _ld_lib _ld_path
+    unset _depflags _DEPCMD _DEPFLAGS
+    _flags_filter=echo
+
+    if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
+        true # no-op to avoid reading stdin in following checks
+    elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
+        _type=llvm_gcc
+        gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
+        _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -v 2>&1 | grep -qi ^gcc; then
+        _type=gcc
+        gcc_version=$($_cc --version | head -n1)
+        gcc_basever=$($_cc -dumpversion)
+        gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
+        gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
+        _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
+        case $gcc_basever in
+            2) ;;
+            2.*) ;;
+            *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
+        esac
+        if [ "$first" = true ]; then
+            case $gcc_basever in
+                4.2*)
+                warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
+            esac
+        fi
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc --version 2>/dev/null | grep -q ^icc; then
+        _type=icc
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+        _cflags_noopt='-O1'
+        _flags_filter=icc_flags
+    elif $_cc -v 2>&1 | grep -q xlc; then
+        _type=xlc
+        _ident=$($_cc -qversion 2>/dev/null | head -n1)
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -qcompact'
+    elif $_cc -V 2>/dev/null | grep -q Compaq; then
+        _type=ccc
+        _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
+        _DEPFLAGS='-M'
+        _cflags_speed='-fast'
+        _cflags_size='-O1'
+        _flags_filter=ccc_flags
+    elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
+        test -d "$sysroot" || die "No valid sysroot specified."
+        _type=armcc
+        _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
+        armcc_conf="$PWD/armcc.conf"
+        $_cc --arm_linux_configure                 \
+             --arm_linux_config_file="$armcc_conf" \
+             --configure_sysroot="$sysroot"        \
+             --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
+             die "Error creating armcc configuration file."
+        $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
+        _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
+        as_default="${cross_prefix}gcc"
+        _depflags='-MMD'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
+        _type=tms470
+        _ident=$($_cc -version | head -n1 | tr -s ' ')
+        _flags='--gcc --abi=eabi -me'
+        _cc_e='-ppl -fe=$@'
+        _cc_o='-fe=$@'
+        _depflags='-ppa -ppd=$(@:.o=.d)'
+        _cflags_speed='-O3 -mf=5'
+        _cflags_size='-O3 -mf=2'
+        _flags_filter=tms470_flags
+    elif $_cc -v 2>&1 | grep -q clang; then
+        _type=clang
+        _ident=$($_cc --version 2>/dev/null | head -n1)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O3'
+        _cflags_size='-Os'
+    elif $_cc -V 2>&1 | grep -q Sun; then
+        _type=suncc
+        _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
+        _DEPFLAGS='-xM1 -xc99'
+        _ldflags='-std=c99'
+        _cflags_speed='-O5'
+        _cflags_size='-O5 -xspace'
+        _flags_filter=suncc_flags
+    elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
+        _type=pathscale
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization'
+    elif $_cc -v 2>&1 | grep -q Open64; then
+        _type=open64
+        _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
+        _depflags='-MMD -MF $(@:.o=.d) -MT $@'
+        _cflags_speed='-O2'
+        _cflags_size='-Os'
+        _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
+    elif $_cc -V 2>&1 | grep -q Portland; then
+        _type=pgi
+        _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
+        opt_common='-alias=ansi -Mdse -Mlre -Mpre'
+        _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
+        _cflags_size="-O2 -Munroll=c:1 $opt_common"
+        _cflags_noopt="-O"
+        _flags_filter=pgi_flags
+    elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
+        _type=armasm
+        _ident=$($_cc | head -n1)
+        # 4509: "This form of conditional instruction is deprecated"
+        _flags="-nologo -ignore 4509"
+        _flags_filter=armasm_flags
+    elif $_cc 2>&1 | grep -q Intel; then
+        _type=icl
+        _ident=$($_cc 2>&1 | head -n1)
+        _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
+        # Not only is O3 broken on 13.x+ but it is slower on all previous
+        # versions (tested) as well.
+        _cflags_speed="-O2"
+        _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
+        if $_cc 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P'
+        _flags_filter=icl_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        # -Qdiag-error to make icl error when seeing certain unknown arguments
+        _flags='-nologo -Qdiag-error:4044,10157'
+        # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
+        # with MSVC which enables it by default.
+        _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
+        disable stripping
+    elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
+        _type=msvc
+        _ident=$($_cc 2>&1 | head -n1)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
+        _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
+        _cflags_speed="-O2"
+        _cflags_size="-O1"
+        if $_cc -nologo- 2>&1 | grep -q Linker; then
+            _ld_o='-out:$@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo$@'
+        _cc_e='-P -Fi$@'
+        _flags_filter=msvc_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        _flags='-nologo'
+        _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
+        disable stripping
+    elif $_cc --version 2>/dev/null | grep -q ^cparser; then
+        _type=cparser
+        _ident=$($_cc --version | head -n1)
+        _depflags='-MMD'
+        _cflags_speed='-O4'
+        _cflags_size='-O2'
+        _flags_filter=cparser_flags
+    fi
+
+    eval ${pfx}_type=\$_type
+    eval ${pfx}_ident=\$_ident
+}
+
+set_ccvars(){
+    eval ${1}_C=\${_cc_c-\${${1}_C}}
+    eval ${1}_E=\${_cc_e-\${${1}_E}}
+    eval ${1}_O=\${_cc_o-\${${1}_O}}
+
+    if [ -n "$_depflags" ]; then
+        eval ${1}_DEPFLAGS=\$_depflags
+    else
+        eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
+        eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
+        eval DEP${1}FLAGS=\$_flags
+    fi
+}
+
+probe_cc cc "$cc" "true"
+cflags_filter=$_flags_filter
+cflags_speed=$_cflags_speed
+cflags_size=$_cflags_size
+cflags_noopt=$_cflags_noopt
+add_cflags $_flags $_cflags
+cc_ldflags=$_ldflags
+set_ccvars CC
+
+probe_cc hostcc "$host_cc"
+host_cflags_filter=$_flags_filter
+add_host_cflags  $_flags $_cflags
+set_ccvars HOSTCC
+
+test -n "$cc_type" && enable $cc_type ||
+    warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
+
+: ${as_default:=$cc}
+: ${objcc_default:=$cc}
+: ${dep_cc_default:=$cc}
+: ${ld_default:=$cc}
+: ${host_ld_default:=$host_cc}
+set_default ar as objcc dep_cc ld ln_s host_ld windres
+
+probe_cc as "$as"
+asflags_filter=$_flags_filter
+add_asflags $_flags $_cflags
+set_ccvars AS
+
+probe_cc objcc "$objcc"
+objcflags_filter=$_flags_filter
+add_objcflags $_flags $_cflags
+set_ccvars OBJC
+
+probe_cc ld "$ld"
+ldflags_filter=$_flags_filter
+add_ldflags $_flags $_ldflags
+test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
+LD_O=${_ld_o-$LD_O}
+LD_LIB=${_ld_lib-$LD_LIB}
+LD_PATH=${_ld_path-$LD_PATH}
+
+probe_cc hostld "$host_ld"
+host_ldflags_filter=$_flags_filter
+add_host_ldflags $_flags $_ldflags
+HOSTLD_O=${_ld_o-$HOSTLD_O}
+
+if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
+    probe_cc depcc "$dep_cc"
+    CCDEP=${_DEPCMD:-$DEPCMD}
+    CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
+    DEPCCFLAGS=$_flags
+fi
+
+if $ar 2>&1 | grep -q Microsoft; then
+    arflags="-nologo"
+    ar_o='-out:$@'
+elif $ar 2>&1 | grep -q 'Texas Instruments'; then
+    arflags="rq"
+    ar_o='$@'
+elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
+    arflags='-Xany -r -c'
+    ar_o='$@'
+elif $ar 2>&1 | grep -q "\[D\] "; then
+    arflags="rcD"
+    ar_o='$@'
+else
+    arflags="rc"
+    ar_o='$@'
+fi
+
+add_cflags $extra_cflags
+add_cxxflags $extra_cxxflags
+add_objcflags $extra_objcflags
+add_asflags $extra_cflags
+
+if test -n "$sysroot"; then
+    case "$cc_type" in
+        gcc|llvm_gcc|clang)
+            add_cppflags --sysroot="$sysroot"
+            add_ldflags --sysroot="$sysroot"
+# On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
+            add_cppflags -isysroot "$sysroot"
+            add_ldflags -isysroot "$sysroot"
+        ;;
+        tms470)
+            add_cppflags -I"$sysinclude"
+            add_ldflags  --sysroot="$sysroot"
+        ;;
+    esac
+fi
+
+if test "$cpu" = host; then
+    enabled cross_compile &&
+        die "--cpu=host makes no sense when cross-compiling."
+
+    case "$cc_type" in
+        gcc|llvm_gcc)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*$1=/{
+                            s/.*$1=\\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march || check_native -mcpu)
+        ;;
+        clang)
+            check_native(){
+                $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
+                sed -n "/cc1.*-target-cpu /{
+                            s/.*-target-cpu \\([^ ]*\\).*/\\1/
+                            p
+                            q
+                        }" $TMPE
+            }
+            cpu=$(check_native -march)
+        ;;
+    esac
+
+    test "${cpu:-host}" = host &&
+        die "--cpu=host not supported with compiler $cc"
+fi
+
+# Deal with common $arch aliases
+case "$arch" in
+    aarch64|arm64)
+        arch="aarch64"
+    ;;
+    arm*|iPad*|iPhone*)
+        arch="arm"
+    ;;
+    mips*|IP*)
+        case "$arch" in
+        *el)
+            add_cppflags -EL
+            add_ldflags -EL
+        ;;
+        *eb)
+            add_cppflags -EB
+            add_ldflags -EB
+        ;;
+        esac
+        arch="mips"
+    ;;
+    parisc*|hppa*)
+        arch="parisc"
+    ;;
+    "Power Macintosh"|ppc*|powerpc*)
+        arch="ppc"
+    ;;
+    s390|s390x)
+        arch="s390"
+    ;;
+    sh4|sh)
+        arch="sh4"
+    ;;
+    sun4u|sparc*)
+        arch="sparc"
+    ;;
+    tilegx|tile-gx)
+        arch="tilegx"
+    ;;
+    i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
+        arch="x86"
+    ;;
+esac
+
+is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
+enable $arch
+
+# Add processor-specific flags
+if enabled aarch64; then
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled alpha; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled arm; then
+
+    check_arm_arch() {
+        check_cpp_condition stddef.h \
+            "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
+            $cpuflags
+    }
+
+    probe_arm_arch() {
+        if   check_arm_arch 4;        then echo armv4
+        elif check_arm_arch 4T;       then echo armv4t
+        elif check_arm_arch 5;        then echo armv5
+        elif check_arm_arch 5E;       then echo armv5e
+        elif check_arm_arch 5T;       then echo armv5t
+        elif check_arm_arch 5TE;      then echo armv5te
+        elif check_arm_arch 5TEJ;     then echo armv5te
+        elif check_arm_arch 6;        then echo armv6
+        elif check_arm_arch 6J;       then echo armv6j
+        elif check_arm_arch 6K;       then echo armv6k
+        elif check_arm_arch 6Z;       then echo armv6z
+        elif check_arm_arch 6ZK;      then echo armv6zk
+        elif check_arm_arch 6T2;      then echo armv6t2
+        elif check_arm_arch 7;        then echo armv7
+        elif check_arm_arch 7A  7_A;  then echo armv7-a
+        elif check_arm_arch 7S;       then echo armv7-a
+        elif check_arm_arch 7R  7_R;  then echo armv7-r
+        elif check_arm_arch 7M  7_M;  then echo armv7-m
+        elif check_arm_arch 7EM 7E_M; then echo armv7-m
+        elif check_arm_arch 8A  8_A;  then echo armv8-a
+        fi
+    }
+
+    [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
+
+    case $cpu in
+        armv*)
+            cpuflags="-march=$cpu"
+            subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
+        ;;
+        *)
+            cpuflags="-mcpu=$cpu"
+            case $cpu in
+                cortex-a*)                               subarch=armv7a  ;;
+                cortex-r*)                               subarch=armv7r  ;;
+                cortex-m*)                 enable thumb; subarch=armv7m  ;;
+                arm11*)                                  subarch=armv6   ;;
+                arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
+                armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
+                *)                             subarch=$(probe_arm_arch) ;;
+            esac
+        ;;
+    esac
+
+    case "$subarch" in
+        armv5t*)    enable fast_clz                ;;
+        armv[6-8]*)
+            enable fast_clz
+            disabled fast_unaligned || enable fast_unaligned
+            ;;
+    esac
+
+elif enabled avr32; then
+
+    case $cpu in
+        ap7[02]0[0-2])
+            subarch="avr32_ap"
+            cpuflags="-mpart=$cpu"
+        ;;
+        ap)
+            subarch="avr32_ap"
+            cpuflags="-march=$cpu"
+        ;;
+        uc3[ab]*)
+            subarch="avr32_uc"
+            cpuflags="-mcpu=$cpu"
+        ;;
+        uc)
+            subarch="avr32_uc"
+            cpuflags="-march=$cpu"
+        ;;
+    esac
+
+elif enabled bfin; then
+
+    cpuflags="-mcpu=$cpu"
+
+elif enabled mips; then
+
+    cpuflags="-march=$cpu"
+
+    if [ "$cpu" != "generic" ]; then
+        disable mips32r2
+        disable mips32r5
+        disable mips64r2
+        disable mips32r6
+        disable mips64r6
+        disable loongson2
+        disable loongson3
+
+        case $cpu in
+            24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
+                enable mips32r2
+                disable msa
+            ;;
+            p5600|i6400)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            loongson*)
+                enable loongson2
+                enable loongson3
+                enable local_aligned_8 local_aligned_16 local_aligned_32
+                enable simd_align_16
+                enable fast_64bit
+                enable fast_clz
+                enable fast_cmov
+                enable fast_unaligned
+                disable aligned_stack
+                case $cpu in
+                    loongson3*)
+                        cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2e)
+                        cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
+                    ;;
+                    loongson2f)
+                        cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
+                    ;;
+                esac
+            ;;
+            *)
+                # Unknown CPU. Disable everything.
+                warn "unknown CPU. Disabling all MIPS optimizations."
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+                disable msa
+                disable mmi
+            ;;
+        esac
+
+        case $cpu in
+            24kc)
+                disable mipsfpu
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kf*)
+                disable mipsdsp
+                disable mipsdspr2
+            ;;
+            24kec|34kc|1004kc)
+                disable mipsfpu
+                disable mipsdspr2
+            ;;
+            24kef*|34kf*|1004kf*)
+                disable mipsdspr2
+            ;;
+            74kc)
+                disable mipsfpu
+            ;;
+            p5600)
+                enable mips32r5
+                check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
+            ;;
+            i6400)
+                enable mips64r6
+                check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
+            ;;
+        esac
+    else
+        # We do not disable anything. Is up to the user to disable the unwanted features.
+        warn 'generic cpu selected'
+    fi
+
+elif enabled ppc; then
+
+    disable ldbrx
+
+    case $(tolower $cpu) in
+        601|ppc601|powerpc601)
+            cpuflags="-mcpu=601"
+            disable altivec
+        ;;
+        603*|ppc603*|powerpc603*)
+            cpuflags="-mcpu=603"
+            disable altivec
+        ;;
+        604*|ppc604*|powerpc604*)
+            cpuflags="-mcpu=604"
+            disable altivec
+        ;;
+        g3|75*|ppc75*|powerpc75*)
+            cpuflags="-mcpu=750"
+            disable altivec
+        ;;
+        g4|745*|ppc745*|powerpc745*)
+            cpuflags="-mcpu=7450"
+            disable vsx
+        ;;
+        74*|ppc74*|powerpc74*)
+            cpuflags="-mcpu=7400"
+            disable vsx
+        ;;
+        g5|970|ppc970|powerpc970)
+            cpuflags="-mcpu=970"
+            disable vsx
+        ;;
+        power[3-6]*)
+            cpuflags="-mcpu=$cpu"
+            disable vsx
+        ;;
+        power[7-8]*)
+            cpuflags="-mcpu=$cpu"
+        ;;
+        cell)
+            cpuflags="-mcpu=cell"
+            enable ldbrx
+            disable vsx
+        ;;
+        e500mc)
+            cpuflags="-mcpu=e500mc"
+            disable altivec
+        ;;
+        e500v2)
+            cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
+            disable altivec
+            disable dcbzl
+        ;;
+        e500)
+            cpuflags="-mcpu=8540 -mhard-float"
+            disable altivec
+            disable dcbzl
+        ;;
+    esac
+
+elif enabled sparc; then
+
+    case $cpu in
+        cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
+            cpuflags="-mcpu=$cpu"
+        ;;
+        ultrasparc*|niagara[234])
+            cpuflags="-mcpu=$cpu"
+        ;;
+    esac
+
+elif enabled x86; then
+
+    case $cpu in
+        i[345]86|pentium)
+            cpuflags="-march=$cpu"
+            disable i686
+            disable mmx
+        ;;
+        # targets that do NOT support nopl and conditional mov (cmov)
+        pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
+            cpuflags="-march=$cpu"
+            disable i686
+        ;;
+        # targets that do support nopl and conditional mov (cmov)
+        i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
+        |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
+            cpuflags="-march=$cpu"
+            enable i686
+            enable fast_cmov
+        ;;
+        # targets that do support conditional mov but on which it's slow
+        pentium4|pentium4m|prescott|nocona)
+            cpuflags="-march=$cpu"
+            enable i686
+            disable fast_cmov
+        ;;
+    esac
+
+fi
+
+if [ "$cpu" != generic ]; then
+    add_cflags  $cpuflags
+    add_asflags $cpuflags
+    test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
+fi
+
+# compiler sanity check
+check_exec <<EOF
+int main(void){ return 0; }
+EOF
+if test "$?" != 0; then
+    echo "$cc is unable to create an executable file."
+    if test -z "$cross_prefix" && ! enabled cross_compile ; then
+        echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
+        echo "Only do this if you know what cross compiling means."
+    fi
+    die "C compiler test failed."
+fi
+
+add_cppflags -D_ISOC99_SOURCE
+add_cxxflags -D__STDC_CONSTANT_MACROS
+add_cxxflags -std=c++98
+check_cflags -std=c99
+check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
+#include <stdlib.h>
+EOF
+check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
+#include <stdlib.h>
+EOF
+
+add_host_cppflags -D_ISOC99_SOURCE
+check_host_cflags -std=c99
+check_host_cflags -Wall
+check_host_cflags -O3
+
+check_64bit(){
+    arch32=$1
+    arch64=$2
+    expr=$3
+    check_code cc "" "int test[2*($expr) - 1]" &&
+        subarch=$arch64 || subarch=$arch32
+}
+
+case "$arch" in
+    aarch64|alpha|ia64)
+        spic=$shared
+    ;;
+    mips)
+        check_64bit mips mips64 '_MIPS_SIM > 1'
+        spic=$shared
+    ;;
+    parisc)
+        check_64bit parisc parisc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    ppc)
+        check_64bit ppc ppc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    s390)
+        check_64bit s390 s390x 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    sparc)
+        check_64bit sparc sparc64 'sizeof(void *) > 4'
+        spic=$shared
+    ;;
+    x86)
+        check_64bit x86_32 x86_64 'sizeof(void *) > 4'
+        # Treat x32 as x64 for now. Note it also needs spic=$shared
+        test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
+            subarch=x86_64
+        if test "$subarch" = "x86_64"; then
+            spic=$shared
+        fi
+    ;;
+    ppc)
+        check_cc <<EOF && subarch="ppc64"
+        int test[(int)sizeof(char*) - 7];
+EOF
+    ;;
+esac
+
+enable $subarch
+enabled spic && enable_weak pic
+
+# OS specific
+case $target_os in
+    aix)
+        SHFLAGS=-shared
+        add_cppflags '-I\$(SRC_PATH)/compat/aix'
+        enabled shared && add_ldflags -Wl,-brtl
+        ;;
+    android)
+        disable symver
+        enable section_data_rel_ro
+        SLIB_INSTALL_NAME='$(SLIBNAME)'
+        SLIB_INSTALL_LINKS=
+        SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
+        ;;
+    haiku)
+        prefix_default="/boot/common"
+        network_extralibs="-lnetwork"
+        host_libs=
+        ;;
+    sunos)
+        SHFLAGS='-shared -Wl,-h,$$(@F)'
+        enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
+        network_extralibs="-lsocket -lnsl"
+        add_cppflags -D__EXTENSIONS__
+        # When using suncc to build, the Solaris linker will mark
+        # an executable with each instruction set encountered by
+        # the Solaris assembler.  As our libraries contain their own
+        # guards for processor-specific code, instead suppress
+        # generation of the HWCAPS ELF section on Solaris x86 only.
+        enabled_all suncc x86 &&
+            echo "hwcap_1 = OVERRIDE;" > mapfile &&
+            add_ldflags -Wl,-M,mapfile
+        nm_default='nm -P -g'
+        SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
+        ;;
+    netbsd)
+        disable symver
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        enabled gcc || check_ldflags -Wl,-zmuldefs
+        ;;
+    openbsd|bitrig)
+        disable symver
+        SHFLAGS='-shared'
+        SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
+        SLIB_INSTALL_LINKS=
+        oss_indev_extralibs="-lossaudio"
+        oss_outdev_extralibs="-lossaudio"
+        ;;
+    dragonfly)
+        disable symver
+        ;;
+    freebsd)
+        ;;
+    bsd/os)
+        add_extralibs -lpoll -lgnugetopt
+        strip="strip -d"
+        ;;
+    darwin)
+        enabled ppc && add_asflags -force_cpusubtype_ALL
+        install_name_dir_default='$(SHLIBDIR)'
+        SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
+        enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
+        strip="${strip} -x"
+        add_ldflags -Wl,-dynamic,-search_paths_first
+        SLIBSUF=".dylib"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
+        objformat="macho"
+        enabled x86_64 && objformat="macho64"
+        enabled_any pic shared x86_64 ||
+            { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
+        check_header dispatch/dispatch.h &&
+            add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
+        ;;
+    msys*)
+        die "Native MSYS builds are discouraged, please use the MINGW environment."
+        ;;
+    mingw32*|mingw64*)
+        if test $target_os = "mingw32ce"; then
+            disable network
+        else
+            target_os=mingw32
+        fi
+        decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
+        decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
+        LIBTARGET=i386
+        if enabled x86_64; then
+            LIBTARGET="i386:x86-64"
+        elif enabled arm; then
+            LIBTARGET=arm-wince
+        fi
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        enabled x86_32 && check_ldflags -Wl,--large-address-aware
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        dlltool="${cross_prefix}dlltool"
+        if check_cmd lib.exe -list; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+            if enabled x86_64; then
+                LIBTARGET=x64
+            fi
+        elif check_cmd $dlltool --version; then
+            SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
+        fi
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        check_ldflags -Wl,--nxcompat,--dynamicbase
+        # Lets work around some stupidity in binutils.
+        # ld will strip relocations from executables even though we need them
+        # for dynamicbase (ASLR).  Using -pie does retain the reloc section
+        # however ld then forgets what the entry point should be (oops) so we
+        # have to manually (re)set it.
+        if enabled x86_32; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
+        elif enabled x86_64; then
+            disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
+            check_ldflags -Wl,--high-entropy-va # binutils 2.25
+            # Set image base >4GB for extra entropy with HEASLR
+            add_ldexeflags -Wl,--image-base,0x140000000
+            append SHFLAGS -Wl,--image-base,0x180000000
+        fi
+        ;;
+    win32|win64)
+        disable symver
+        if enabled shared; then
+            # Link to the import library instead of the normal static library
+            # for shared libs.
+            LD_LIB='%.lib'
+            # Cannot build both shared and static libs with MSVC or icl.
+            disable static
+        fi
+        enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
+        shlibdir_default="$bindir_default"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
+        SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
+        SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
+        objformat="win32"
+        ranlib=:
+        enable dos_paths
+        ;;
+    cygwin*)
+        target_os=cygwin
+        shlibdir_default="$bindir_default"
+        SLIBPREF="cyg"
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
+        SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
+        objformat="win32"
+        enable dos_paths
+        enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
+        ;;
+    *-dos|freedos|opendos)
+        network_extralibs="-lsocket"
+        objformat="coff"
+        enable dos_paths
+        add_cppflags -U__STRICT_ANSI__
+        ;;
+    linux)
+        enable dv1394
+        enable section_data_rel_ro
+        ;;
+    irix*)
+        target_os=irix
+        ranlib="echo ignoring ranlib"
+        ;;
+    os/2*)
+        strip="lxlite -CS"
+        objformat="aout"
+        add_cppflags -D_GNU_SOURCE
+        add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
+        SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
+        LIBSUF="_s.a"
+        SLIBPREF=""
+        SLIBSUF=".dll"
+        SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
+        SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
+        SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
+            echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
+            echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
+            echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
+            emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
+        SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
+            emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
+        SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
+        SLIB_INSTALL_LINKS=
+        SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
+        enable dos_paths
+        enable_weak os2threads
+        ;;
+    gnu/kfreebsd)
+        add_cppflags -D_BSD_SOURCE
+        ;;
+    gnu)
+        ;;
+    qnx)
+        add_cppflags -D_QNX_SOURCE
+        network_extralibs="-lsocket"
+        ;;
+    symbian)
+        SLIBSUF=".dll"
+        enable dos_paths
+        add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
+        add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
+        add_ldflags -Wl,--target1-abs,--no-undefined \
+                    -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
+                    -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
+        add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
+                      -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
+                      -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
+        ;;
+    osf1)
+        add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
+        ;;
+    minix)
+        ;;
+    plan9)
+        add_cppflags -D_C99_SNPRINTF_EXTENSION  \
+                     -D_REENTRANT_SOURCE        \
+                     -D_RESEARCH_SOURCE         \
+                     -DFD_SETSIZE=96            \
+                     -DHAVE_SOCK_OPTS
+        add_compat strtod.o strtod=avpriv_strtod
+        network_extralibs='-lbsd'
+        exeobjs=compat/plan9/main.o
+        disable ffserver
+        cp_f='cp'
+        ;;
+    none)
+        ;;
+    *)
+        die "Unknown OS '$target_os'."
+        ;;
+esac
+
+# test if creating links works
+link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
+link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
+mkdir "$link_dest"
+$ln_s "$link_dest" "$link_name"
+touch "$link_dest/test_file"
+if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
+    # create link to source path
+    [ -e src ] && rm src
+    $ln_s "$source_path" src
+    source_link=src
+else
+    # creating directory links doesn't work
+    # fall back to using the full source path
+    source_link="$source_path"
+fi
+# cleanup
+rm -r "$link_dest"
+rm -r "$link_name"
+
+# determine libc flavour
+
+probe_libc(){
+    pfx=$1
+    pfx_no_=${pfx%_}
+    # uclibc defines __GLIBC__, so it needs to be checked before glibc.
+    if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
+        eval ${pfx}libc_type=uclibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
+        eval ${pfx}libc_type=glibc
+        add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+    # MinGW headers can be installed on Cygwin, so check for newlib first.
+    elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
+        eval ${pfx}libc_type=newlib
+        add_${pfx}cppflags -U__STRICT_ANSI__
+    # MinGW64 is backwards compatible with MinGW32, so check for it first.
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
+        eval ${pfx}libc_type=mingw64
+        if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
+            add_compat msvcrt/snprintf.o
+            add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
+        fi
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
+         check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
+        eval ${pfx}libc_type=mingw32
+        check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
+            (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
+            die "ERROR: MinGW32 runtime version must be >= 3.15."
+        add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
+    elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
+        eval ${pfx}libc_type=msvcrt
+        if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
+            if [ "$pfx" = host_ ]; then
+                add_host_cppflags -Dsnprintf=_snprintf
+            else
+                add_compat strtod.o strtod=avpriv_strtod
+                add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
+                                             _snprintf=avpriv_snprintf  \
+                                             vsnprintf=avpriv_vsnprintf
+            fi
+        fi
+        # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
+        # 0x601 by default unless something else is set by the user.
+        # This can easily lead to us detecting functions only present
+        # in such new versions and producing binaries requiring windows 7.0.
+        # Therefore explicitly set the default to XP unless the user has
+        # set something else on the command line.
+        # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
+        # family. For these cases, configure is free to use any functions
+        # found in the SDK headers by default. (Alternatively, we could force
+        # _WIN32_WINNT to 0x0602 in that case.)
+        check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
+            { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
+#ifdef WINAPI_FAMILY
+#include <winapifamily.h>
+#if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+#error not desktop
+#endif
+#endif
+EOF
+    elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
+        eval ${pfx}libc_type=klibc
+    elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
+        eval ${pfx}libc_type=bionic
+    elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
+        eval ${pfx}libc_type=solaris
+        add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
+    fi
+    check_${pfx}cc <<EOF
+#include <time.h>
+void *v = localtime_r;
+EOF
+test "$?" != 0 && check_${pfx}cc -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 <<EOF && add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
+#include <time.h>
+void *v = localtime_r;
+EOF
+
+}
+
+probe_libc
+test -n "$libc_type" && enable libc_$libc_type
+probe_libc host_
+test -n "$host_libc_type" && enable host_libc_$host_libc_type
+
+case $libc_type in
+    bionic)
+        add_compat strtod.o strtod=avpriv_strtod
+        ;;
+esac
+
+# hacks for compiler/libc/os combinations
+
+if enabled_all tms470 libc_glibc; then
+    CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
+    add_cppflags -D__USER_LABEL_PREFIX__=
+    add_cppflags -D__builtin_memset=memset
+    add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
+    add_cflags   -pds=48    # incompatible redefinition of macro
+fi
+
+if enabled_all ccc libc_glibc; then
+    add_ldflags -Wl,-z,now  # calls to libots crash without this
+fi
+
+check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
+    add_cppflags '-I\$(SRC_PATH)/compat/float'
+
+esc(){
+    echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
+}
+
+echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
+
+check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
+
+set_default libdir
+: ${shlibdir_default:="$libdir"}
+: ${pkgconfigdir_default:="$libdir/pkgconfig"}
+
+set_default $PATHS_LIST
+set_default nm
+
+# we need to build at least one lib type
+if ! enabled_any static shared; then
+    cat <<EOF
+At least one library type must be built.
+Specify --enable-static to build the static libraries or --enable-shared to
+build the shared libraries as well. To only build the shared libraries specify
+--disable-static in addition to --enable-shared.
+EOF
+    exit 1
+fi
+
+die_license_disabled() {
+    enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
+}
+
+die_license_disabled_gpl() {
+    enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
+}
+
+die_license_disabled gpl frei0r
+die_license_disabled gpl libcdio
+die_license_disabled gpl librubberband
+die_license_disabled gpl libsmbclient
+die_license_disabled gpl libvidstab
+die_license_disabled gpl libx264
+die_license_disabled gpl libx265
+die_license_disabled gpl libxavs
+die_license_disabled gpl libxvid
+die_license_disabled gpl x11grab
+
+die_license_disabled nonfree cuda
+die_license_disabled nonfree cuvid
+die_license_disabled nonfree libfaac
+die_license_disabled nonfree libnpp
+enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
+enabled gpl && die_license_disabled_gpl nonfree openssl
+
+die_license_disabled version3 gmp
+die_license_disabled version3 libopencore_amrnb
+die_license_disabled version3 libopencore_amrwb
+die_license_disabled version3 libsmbclient
+die_license_disabled version3 libvo_amrwbenc
+
+enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
+
+disabled optimizations || check_cflags -fomit-frame-pointer
+
+enable_weak_pic() {
+    disabled pic && return
+    enable pic
+    add_cppflags -DPIC
+    case "$target_os" in
+    mingw*|cygwin*)
+        ;;
+    *)
+        add_cflags -fPIC
+        ;;
+    esac
+    add_asflags  -fPIC
+}
+
+enabled pic && enable_weak_pic
+
+check_cc <<EOF || die "Symbol mangling check failed."
+int ff_extern;
+EOF
+sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
+extern_prefix=${sym%%ff_extern*}
+
+check_cc <<EOF && enable_weak inline_asm
+void foo(void) { __asm__ volatile ("" ::); }
+EOF
+
+_restrict=
+for restrict_keyword in restrict __restrict__ __restrict; do
+    check_cc <<EOF && _restrict=$restrict_keyword && break
+void foo(char * $restrict_keyword p);
+EOF
+done
+
+check_cc <<EOF && enable pragma_deprecated
+void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
+EOF
+
+check_cc <<EOF && enable attribute_packed
+struct { int x; } __attribute__((packed)) x;
+EOF
+
+check_cc <<EOF && enable attribute_may_alias
+union { int x; } __attribute__((may_alias)) x;
+EOF
+
+check_cc <<EOF || die "endian test failed"
+unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
+EOF
+od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
+
+if ! enabled ppc64 || enabled bigendian; then
+    disable vsx
+fi
+
+check_gas() {
+    log "check_gas using '$as' as AS"
+    # :vararg is used on aarch64, arm and ppc altivec
+    check_as <<EOF || return 1
+.macro m n, y:vararg=0
+\n: .int \y
+.endm
+m x
+EOF
+    # .altmacro is only used in arm asm
+    ! enabled arm || check_as <<EOF || return 1
+.altmacro
+EOF
+    enable gnu_as
+    return 0
+}
+
+if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
+    nogas=:
+    enabled_any arm aarch64 && nogas=die
+    enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
+    as_noop=-v
+
+    case $as_type in
+        arm*) gaspp_as_type=armasm; as_noop=-h ;;
+        gcc)  gaspp_as_type=gas ;;
+        *)    gaspp_as_type=$as_type ;;
+    esac
+
+    [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
+
+    test "${as#*gas-preprocessor.pl}" != "$as" ||
+    check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
+        gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
+
+    if ! check_gas ; then
+        as=${gas:=$as}
+        check_gas || \
+            $nogas "GNU assembler not found, install/update gas-preprocessor"
+    fi
+
+    check_as <<EOF && enable as_func
+.func test
+.endfunc
+EOF
+fi
+
+check_inline_asm inline_asm_labels '"1:\n"'
+
+check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
+
+if enabled aarch64; then
+    enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
+    # internal assembler in clang 3.3 does not support this instruction
+    enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
+    enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
+
+    map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
+
+elif enabled alpha; then
+
+    check_cflags -mieee
+
+elif enabled arm; then
+
+    enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
+
+    check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
+float func(float a, float b){ return a+b; }
+EOF
+
+    enabled thumb && check_cflags -mthumb || check_cflags -marm
+
+    if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
+        enable vfp_args
+    elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
+        enable vfp_args
+    elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
+        case "${cross_prefix:-$cc}" in
+            *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
+            *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
+__asm__ (".eabi_attribute 28, 1");
+int main(void) { return 0; }
+EOF
+        esac
+        warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
+    fi
+
+    enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
+    enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
+    enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
+    enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
+    enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
+    enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
+    enabled setend  && check_insn setend  'setend be'
+
+    [ $target_os = linux ] || [ $target_os = android ] ||
+        map 'enabled_any ${v}_external ${v}_inline || disable $v' \
+            $ARCH_EXT_LIST_ARM
+
+    check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
+
+    check_as <<EOF && enable as_dn_directive
+ra .dn d0.i16
+.unreq ra
+EOF
+
+    # llvm's integrated assembler supports .object_arch from llvm 3.5
+    [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
+.object_arch armv4
+EOF
+
+    [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
+
+elif enabled mips; then
+
+    enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
+    enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
+    enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
+
+    # Enable minimum ISA based on selected options
+    if enabled mips64; then
+        enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
+        enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
+        disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
+    else
+        enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
+        enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
+        enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
+        disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
+    fi
+
+    enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
+    enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
+    enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
+    enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
+    enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
+
+elif enabled parisc; then
+
+    if enabled gcc; then
+        case $($cc -dumpversion) in
+            4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
+        esac
+    fi
+
+elif enabled ppc; then
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
+    check_inline_asm ibm_asm   '"add 0, 0, 0"'
+    check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
+    check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
+
+    # AltiVec flags: The FSF version of GCC differs from the Apple version
+    if enabled altivec; then
+        check_cflags -maltivec -mabi=altivec &&
+        { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
+        check_cflags -faltivec
+
+        # check if our compiler supports Motorola AltiVec C API
+        check_cc <<EOF || disable altivec
+$inc_altivec_h
+int main(void) {
+    vector signed int v1 = (vector signed int) { 0 };
+    vector signed int v2 = (vector signed int) { 1 };
+    v1 = vec_add(v1, v2);
+    return 0;
+}
+EOF
+
+        enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
+    fi
+
+    if enabled vsx; then
+        check_cflags -mvsx &&
+        check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
+    fi
+
+    if enabled power8; then
+        check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
+    fi
+
+elif enabled x86; then
+
+    check_builtin rdtsc    intrin.h   "__rdtsc()"
+    check_builtin mm_empty mmintrin.h "_mm_empty()"
+
+    enable local_aligned_8 local_aligned_16 local_aligned_32
+
+    # check whether EBP is available on x86
+    # As 'i' is stored on the stack, this program will crash
+    # if the base pointer is used to access it because the
+    # base pointer is cleared in the inline assembly code.
+    check_exec_crash <<EOF && enable ebp_available
+volatile int i=0;
+__asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
+return i;
+EOF
+
+    # check whether EBX is available on x86
+    check_inline_asm ebx_available '""::"b"(0)' &&
+        check_inline_asm ebx_available '"":::"%ebx"'
+
+    # check whether xmm clobbers are supported
+    check_inline_asm xmm_clobbers '"":::"%xmm0"'
+
+    check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
+        check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
+
+    # check whether binutils is new enough to compile SSSE3/MMXEXT
+    enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
+    enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
+
+    if ! disabled_any asm mmx yasm; then
+        if check_cmd $yasmexe --version; then
+            enabled x86_64 && yasm_extra="-m amd64"
+            yasm_debug="-g dwarf2"
+        elif check_cmd nasm -v; then
+            yasmexe=nasm
+            yasm_debug="-g -F dwarf"
+            if enabled x86_64; then
+                case "$objformat" in
+                    elf)   objformat=elf64 ;;
+                    win32) objformat=win64 ;;
+                esac
+            fi
+        fi
+
+        YASMFLAGS="-f $objformat $yasm_extra"
+        enabled pic               && append YASMFLAGS "-DPIC"
+        test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
+        case "$objformat" in
+            elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
+        esac
+
+        check_yasm "movbe ecx, [5]" && enable yasm ||
+            die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
+        check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
+        check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
+        check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
+        check_yasm "CPU amdnop" || disable cpunop
+    fi
+
+    case "$cpu" in
+        athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
+            disable fast_clz
+        ;;
+    esac
+
+fi
+
+check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
+
+check_ldflags -Wl,--as-needed
+check_ldflags -Wl,-z,noexecstack
+
+if check_func dlopen; then
+    ldl=
+elif check_func dlopen -ldl; then
+    ldl=-ldl
+fi
+
+decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
+decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
+frei0r_filter_extralibs='$ldl'
+frei0r_src_filter_extralibs='$ldl'
+ladspa_filter_extralibs='$ldl'
+nvenc_encoder_extralibs='$ldl'
+coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
+
+if ! disabled network; then
+    check_func getaddrinfo $network_extralibs
+    check_func inet_aton $network_extralibs
+
+    check_type netdb.h "struct addrinfo"
+    check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
+    check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
+    check_type poll.h "struct pollfd"
+    check_type netinet/sctp.h "struct sctp_event_subscribe"
+    check_struct "sys/socket.h" "struct msghdr" msg_flags
+    check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
+    check_type netinet/in.h "struct sockaddr_in6"
+    check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
+    check_type "sys/types.h sys/socket.h" socklen_t
+
+    # Prefer arpa/inet.h over winsock2
+    if check_header arpa/inet.h ; then
+        check_func closesocket
+    elif check_header winsock2.h ; then
+        check_func_headers winsock2.h closesocket -lws2 &&
+            network_extralibs="-lws2" ||
+        { check_func_headers winsock2.h closesocket -lws2_32 &&
+            network_extralibs="-lws2_32"; } || disable winsock2_h network
+        check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
+
+        check_type ws2tcpip.h socklen_t
+        check_type ws2tcpip.h "struct addrinfo"
+        check_type ws2tcpip.h "struct group_source_req"
+        check_type ws2tcpip.h "struct ip_mreq_source"
+        check_type ws2tcpip.h "struct ipv6_mreq"
+        check_type winsock2.h "struct pollfd"
+        check_struct winsock2.h "struct sockaddr" sa_len
+        check_type ws2tcpip.h "struct sockaddr_in6"
+        check_type ws2tcpip.h "struct sockaddr_storage"
+    else
+        disable network
+    fi
+fi
+
+check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
+check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
+check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
+check_builtin MemoryBarrier windows.h "MemoryBarrier()"
+check_builtin sarestart signal.h "SA_RESTART"
+check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
+check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
+check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
+check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
+check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
+
+case "$custom_allocator" in
+    jemalloc)
+        # jemalloc by default does not use a prefix
+        require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
+    ;;
+    tcmalloc)
+        require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
+        malloc_prefix=tc_
+    ;;
+esac
+
+check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
+check_func  ${malloc_prefix}memalign            && enable memalign
+check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
+
+check_func  access
+check_func  arc4random
+check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  fcntl
+check_func  fork
+check_func  gethrtime
+check_func  getopt
+check_func  getrusage
+check_func  gettimeofday
+check_func  isatty
+check_func  mach_absolute_time
+check_func  mkstemp
+check_func  mmap
+check_func  mprotect
+# Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
+check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+check_func  sched_getaffinity
+check_func  setrlimit
+check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
+check_func  strerror_r
+check_func  sysconf
+check_func  sysctl
+check_func  usleep
+
+check_func_headers conio.h kbhit
+check_func_headers io.h setmode
+check_func_headers lzo/lzo1x.h lzo1x_999_compress
+check_func_headers stdlib.h getenv
+check_func_headers sys/stat.h lstat
+
+check_func_headers windows.h CoTaskMemFree -lole32
+check_func_headers windows.h GetProcessAffinityMask
+check_func_headers windows.h GetProcessTimes
+check_func_headers windows.h GetSystemTimeAsFileTime
+check_func_headers windows.h MapViewOfFile
+check_func_headers windows.h PeekNamedPipe
+check_func_headers windows.h SetConsoleTextAttribute
+check_func_headers windows.h SetConsoleCtrlHandler
+check_func_headers windows.h SetDllDirectory
+check_func_headers windows.h Sleep
+check_func_headers windows.h VirtualAlloc
+check_struct windows.h "CONDITION_VARIABLE" Ptr
+check_func_headers glob.h glob
+enabled xlib &&
+    check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
+
+check_header AudioToolbox/AudioToolbox.h
+check_header direct.h
+check_header dirent.h
+check_header dlfcn.h
+check_header d3d11.h
+check_header dxva.h
+check_header dxva2api.h -D_WIN32_WINNT=0x0600
+check_header io.h
+check_header libcrystalhd/libcrystalhd_if.h
+check_header mach/mach_time.h
+check_header malloc.h
+check_header net/udplite.h
+check_header poll.h
+check_header sys/mman.h
+check_header sys/param.h
+check_header sys/resource.h
+check_header sys/select.h
+check_header sys/time.h
+check_header sys/un.h
+check_header termios.h
+check_header unistd.h
+check_header valgrind/valgrind.h
+check_header vdpau/vdpau.h
+check_header vdpau/vdpau_x11.h
+check_header VideoDecodeAcceleration/VDADecoder.h
+check_header VideoToolbox/VideoToolbox.h
+check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
+enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
+check_header windows.h
+check_header X11/extensions/XvMClib.h
+check_header asm/types.h
+
+check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
+check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
+check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
+check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
+
+check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
+
+check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
+check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
+check_type "windows.h d3d11.h" "ID3D11VideoContext"
+check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
+
+check_type "va/va.h" "VAPictureParameterBufferHEVC"
+check_type "va/va.h" "VADecPictureParameterBufferVP9"
+check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
+check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
+check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
+check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
+
+check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
+
+check_type "cuviddec.h" "CUVIDH264PICPARAMS"
+check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
+check_type "cuviddec.h" "CUVIDVC1PICPARAMS"
+check_type "cuviddec.h" "CUVIDVP9PICPARAMS"
+
+check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
+
+if ! disabled w32threads && ! enabled pthreads; then
+    check_func_headers "windows.h process.h" _beginthreadex &&
+        enable w32threads || disable w32threads
+    if ! enabled w32threads && enabled winrt; then
+        check_func_headers "windows.h" CreateThread &&
+            enable w32threads || disable w32threads
+    fi
+fi
+
+# check for some common methods of building with pthread support
+# do this before the optional library checks as some of them require pthreads
+if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
+    enable pthreads
+    if check_func pthread_join -lpthread && check_func pthread_create -lpthread; then
+        add_cflags -lpthread
+        add_extralibs -lpthread
+    elif check_func pthread_join -lpthreads && check_func pthread_create -lpthreads; then
+        add_cflags -lpthreads
+        add_extralibs -lpthreads
+    elif check_func pthread_join -ldl -lpthread && check_func pthread_create -ldl -lpthread; then
+        add_cflags -ldl -lpthread
+        add_extralibs -ldl -lpthread
+    elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
+        add_extralibs -lpthreadGC2
+    elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
+        :
+    elif ! check_func pthread_join && ! check_func pthread_create; then
+        disable pthreads
+    fi
+    check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
+fi
+
+
+if enabled pthreads; then
+  check_func pthread_cancel
+fi
+
+enabled pthreads &&
+    check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
+
+disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
+disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
+disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
+
+check_lib math.h sin -lm && LIBM="-lm"
+disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
+
+atan2f_args=2
+copysign_args=2
+hypot_args=2
+ldexpf_args=2
+powf_args=2
+
+for func in $MATH_FUNCS; do
+    eval check_mathfunc $func \${${func}_args:-1}
+done
+
+for func in $COMPLEX_FUNCS; do
+    eval check_complexfunc $func \${${func}_args:-1}
+done
+
+# Enable CUVID by default if CUDA is enabled
+if enabled cuda && ! disabled cuvid; then
+    enable cuvid
+fi
+
+# these are off by default, so fail if requested and not available
+enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
+enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
+                                check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
+enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
+                               { check_lib2 "dlfcn.h" dlopen -ldl; } ||
+                               die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
+enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
+                               die "ERROR: CUDA not found"; }
+enabled cuvid             && { check_lib cuviddec.h cuvidCreateDecoder -lnvcuvid ||
+                               die "ERROR: CUVID not found"; } &&
+                             { enabled cuda ||
+                               die "ERROR: CUVID requires CUDA"; }
+enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
+enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
+enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
+enabled decklink          && { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; }
+enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
+enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
+enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
+enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
+                               check_lib2 "dlfcn.h" dlopen -ldl; }
+enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
+enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
+enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
+enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
+enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
+enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
+                             { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
+                               die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
+enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
+enabled libebur128        && require ebur128 ebur128.h ebur128_relative_threshold -lebur128
+enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
+enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
+                               { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
+                                 warn "using libfdk without pkg-config"; } }
+flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
+enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
+enabled fontconfig        && enable libfontconfig
+enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
+enabled libfreetype       && require_libfreetype
+enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
+enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
+enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
+                                   check_lib "${gsm_hdr}" gsm_create -lgsm && break;
+                               done || die "ERROR: libgsm not found"; }
+enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
+enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
+enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
+enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
+enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
+enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
+enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
+enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
+enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
+enabled libopencv         && { check_header opencv2/core/core_c.h &&
+                               { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
+                                 require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
+                               require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
+enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
+enabled libopenjpeg       && { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
+                               check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC ||
+                               check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
+                               die "ERROR: libopenjpeg not found"; }
+enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
+enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
+enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
+enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
+enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
+enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
+enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
+                               require smbclient libsmbclient.h smbc_init -lsmbclient; }
+enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
+enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
+enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
+enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
+enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
+enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
+enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
+                             { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
+                               die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
+enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
+enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
+enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
+enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
+
+enabled libvpx            && {
+    enabled libvpx_vp8_decoder && {
+        use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
+                die "ERROR: libvpx decoder version must be >=0.9.1";
+    }
+    enabled libvpx_vp8_encoder && {
+        use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
+                die "ERROR: libvpx encoder version must be >=0.9.7";
+    }
+    enabled libvpx_vp9_decoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
+            check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
+                disable libvpx_vp9_decoder;
+    }
+    enabled libvpx_vp9_encoder && {
+        use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
+            check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
+                disable libvpx_vp9_encoder;
+    }
+    if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
+        die "libvpx enabled but no supported decoders found"
+    fi
+}
+
+enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
+enabled libwebp           && {
+    enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
+    enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
+enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
+                               { require libx264 x264.h x264_encoder_encode -lx264 &&
+                                 warn "using libx264 without pkg-config"; } } &&
+                             { check_cpp_condition x264.h "X264_BUILD >= 118" ||
+                               die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
+                             { check_cpp_condition x264.h "X264_MPEG2" &&
+                               enable libx262; }
+enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
+                             { check_cpp_condition x265.h "X265_BUILD >= 68" ||
+                               die "ERROR: libx265 version must be >= 68."; }
+enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
+enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
+enabled libzimg           && require_pkg_config zimg zimg.h zimg_get_api_version
+enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
+enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
+                             { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
+                               enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
+enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
+enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
+                                { ! enabled cross_compile && {
+                                    add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
+                                    add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
+                                    check_lib interface/mmal/mmal.h mmal_port_connect ; }
+                                check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
+                               die "ERROR: mmal not found"; }
+enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
+
+enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
+enabled nvenc             && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
+                             { check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
+                               die "ERROR: NVENC API version 5 or older is not supported"; } &&
+                             { [ $target_os != cygwin ] || die "ERROR: NVENC is not supported on Cygwin currently."; }
+enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
+                               check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
+                               die "ERROR: openal not found"; } &&
+                             { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
+                               die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
+enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
+                               check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
+                               die "ERROR: opencl not found"; } &&
+                             { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
+                               die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
+enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
+                               check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
+                               check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
+                               check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
+                               die "ERROR: opengl not found."
+                             }
+enabled omx_rpi && enable omx
+enabled omx               && { check_header OMX_Core.h ||
+                                { ! enabled cross_compile && enabled omx_rpi && {
+                                    add_cflags -isystem/opt/vc/include/IL ; }
+                                check_header OMX_Core.h ; } ||
+                               die "ERROR: OpenMAX IL headers not found"; }
+enabled openssl           && { use_pkg_config openssl openssl/ssl.h SSL_library_init ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
+                               check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
+                               die "ERROR: openssl not found"; }
+enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
+
+# libdc1394 check
+if enabled libdc1394; then
+    { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
+        enable libdc1394_2; } ||
+    { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
+        enable libdc1394_1; } ||
+    die "ERROR: No version of libdc1394 found "
+fi
+
+if enabled gcrypt; then
+    GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
+    if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
+        gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
+        gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
+        check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
+            die "ERROR: gcrypt not found"
+        add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
+    else
+        require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
+    fi
+fi
+
+if ! disabled sdl; then
+    SDL_CONFIG="${cross_prefix}sdl-config"
+    if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+        check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+        enable sdl
+    else
+        if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
+            sdl_cflags=$("${SDL_CONFIG}" --cflags)
+            sdl_libs=$("${SDL_CONFIG}" --libs)
+            check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
+            check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
+            enable sdl
+        elif enabled sdl ; then
+            die "ERROR: SDL not found"
+        else
+            disable sdl
+        fi
+    fi
+    if test $target_os = "mingw32"; then
+        sdl_libs="$sdl_libs -mconsole"
+    fi
+fi
+enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
+
+disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
+    enable securetransport; }
+
+disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
+                       check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
+
+makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
+enabled makeinfo \
+    && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
+    && enable makeinfo_html || disable makeinfo_html
+disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
+perl -v            > /dev/null 2>&1 && enable perl      || disable perl
+pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
+rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
+
+check_header linux/fb.h
+check_header linux/videodev.h
+check_header linux/videodev2.h
+check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_header sys/videoio.h
+check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
+
+check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
+# check that WM_CAP_DRIVER_CONNECT is defined to the proper value
+# w32api 3.12 had it defined wrong
+check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
+
+check_type "dshow.h" IBaseFilter
+
+# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
+{ check_header dev/bktr/ioctl_meteor.h &&
+  check_header dev/bktr/ioctl_bt848.h; } ||
+{ check_header machine/ioctl_meteor.h &&
+  check_header machine/ioctl_bt848.h; } ||
+{ check_header dev/video/meteor/ioctl_meteor.h &&
+  check_header dev/video/bktr/ioctl_bt848.h; } ||
+check_header dev/ic/bt8xx.h
+
+check_header sndio.h
+if check_struct sys/soundcard.h audio_buf_info bytes; then
+    enable_safe sys/soundcard.h
+else
+    check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
+    #include <sys/soundcard.h>
+    audio_buf_info abc;
+EOF
+fi
+check_header soundcard.h
+
+enabled_any alsa_indev alsa_outdev &&
+    check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
+
+enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
+    check_func jack_port_get_latency_range -ljack
+
+enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
+
+if enabled libcdio; then
+    check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    die "ERROR: No usable libcdio/cdparanoia found"
+fi
+
+enabled xlib &&
+    check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
+
+if ! disabled libxcb; then
+    check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
+        enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
+    } && disable x11grab && enable libxcb
+
+if enabled libxcb; then
+    disabled libxcb_shm || {
+        check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
+            enabled libxcb_shm && die "ERROR: libxcb_shm not found";
+        } && check_header sys/shm.h && enable libxcb_shm; }
+
+    disabled libxcb_xfixes || {
+        check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
+            enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
+        } && enable libxcb_xfixes; }
+
+    disabled libxcb_shape || {
+        check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
+            enabled libxcb_shape && die "ERROR: libxcb_shape not found";
+        } && enable libxcb_shape; }
+
+    add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
+    add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
+fi
+fi
+
+if enabled x11grab; then
+    enabled xlib || die "ERROR: Xlib not found"
+    require Xext X11/extensions/XShm.h XShmCreateImage -lXext
+    require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
+fi
+
+check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
+
+enabled dxva2api_h &&
+    check_cc <<EOF && enable dxva2api_cobj
+#define _WIN32_WINNT 0x0600
+#define COBJMACROS
+#include <windows.h>
+#include <d3d9.h>
+#include <dxva2api.h>
+int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
+EOF
+
+enabled vaapi &&
+    check_lib va/va.h vaInitialize -lva ||
+    disable vaapi
+
+enabled vaapi &&
+    check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
+    disable vaapi
+
+if enabled vaapi ; then
+    enabled xlib &&
+    check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
+    enable vaapi_x11
+
+    check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
+    enable vaapi_drm
+fi
+
+enabled vdpau &&
+    check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
+    disable vdpau
+
+enabled vdpau && enabled xlib &&
+    check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
+    enable vdpau_x11
+
+# Funny iconv installations are not unusual, so check it after all flags have been set
+disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
+
+enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
+
+# add some useful compiler flags if supported
+check_cflags -Wdeclaration-after-statement
+check_cflags -Wall
+check_cflags -Wdisabled-optimization
+check_cflags -Wpointer-arith
+check_cflags -Wredundant-decls
+check_cflags -Wwrite-strings
+check_cflags -Wtype-limits
+check_cflags -Wundef
+check_cflags -Wmissing-prototypes
+check_cflags -Wno-pointer-to-int-cast
+check_cflags -Wstrict-prototypes
+check_cflags -Wempty-body
+enabled extra_warnings && check_cflags -Winline
+enabled extra_warnings && check_cflags -Wcast-qual
+
+check_disable_warning(){
+    warning_flag=-W${1#-Wno-}
+    test_cflags $warning_flag && add_cflags $1
+}
+
+check_disable_warning -Wno-parentheses
+check_disable_warning -Wno-switch
+check_disable_warning -Wno-format-zero-length
+check_disable_warning -Wno-pointer-sign
+check_disable_warning -Wno-unused-const-variable
+
+# add some linker flags
+check_ldflags -Wl,--warn-common
+check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
+enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
+enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
+test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
+
+# add some strip flags
+# -wN '..@*' is more selective than -x, but not available everywhere.
+check_stripflags -wN \'..@*\' || check_stripflags -x
+
+enabled neon_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert ||
+    disable neon_clobber_test
+
+enabled xmm_clobber_test &&
+    check_ldflags -Wl,--wrap,avcodec_open2              \
+                  -Wl,--wrap,avcodec_decode_audio4      \
+                  -Wl,--wrap,avcodec_decode_video2      \
+                  -Wl,--wrap,avcodec_decode_subtitle2   \
+                  -Wl,--wrap,avcodec_encode_audio2      \
+                  -Wl,--wrap,avcodec_encode_video2      \
+                  -Wl,--wrap,avcodec_encode_subtitle    \
+                  -Wl,--wrap,swr_convert                \
+                  -Wl,--wrap,avresample_convert         \
+                  -Wl,--wrap,sws_scale ||
+    disable xmm_clobber_test
+
+echo "X { local: *; };" > $TMPV
+if test_ldflags -Wl,--version-script,$TMPV; then
+    append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
+elif test_ldflags -Wl,-M,$TMPV; then
+    append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
+fi
+
+check_cc <<EOF && enable symver_asm_label
+void ff_foo(void) __asm__ ("av_foo@VERSION");
+void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
+EOF
+    check_cc <<EOF && enable symver_gnu_asm
+__asm__(".symver ff_foo,av_foo@VERSION");
+void ff_foo(void) {}
+EOF
+
+if [ -z "$optflags" ]; then
+    if enabled small; then
+        optflags=$cflags_size
+    elif enabled optimizations; then
+        optflags=$cflags_speed
+    else
+        optflags=$cflags_noopt
+    fi
+fi
+
+check_optflags(){
+    check_cflags "$@"
+    enabled lto && check_ldflags "$@"
+}
+
+
+if enabled lto; then
+    test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
+    check_cflags  -flto
+    check_ldflags -flto $cpuflags
+    disable inline_asm_direct_symbol_refs
+fi
+
+check_optflags $optflags
+check_optflags -fno-math-errno
+check_optflags -fno-signed-zeros
+
+enabled ftrapv && check_cflags -ftrapv
+
+check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
+int x;
+EOF
+
+
+if enabled icc; then
+    # Just warnings, no remarks
+    check_cflags -w1
+    # -wd: Disable following warnings
+    # 144, 167, 556: -Wno-pointer-sign
+    # 188: enumerated type mixed with another type
+    # 1292: attribute "foo" ignored
+    # 1419: external declaration in primary source file
+    # 10006: ignoring unknown option -fno-signed-zeros
+    # 10148: ignoring unknown option -Wno-parentheses
+    # 10156: ignoring option '-W'; no argument required
+    # 13200: No EMMS instruction before call to function
+    # 13203: No EMMS instruction before return from function
+    check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
+    # 11030: Warning unknown option --as-needed
+    # 10156: ignoring option '-export'; no argument required
+    check_ldflags -wd10156,11030
+    # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
+    enable ebp_available
+    # The test above does not test linking
+    enabled lto && disable symver_asm_label
+    if enabled x86_32; then
+        icc_version=$($cc -dumpversion)
+        test ${icc_version%%.*} -ge 11 &&
+            check_cflags -falign-stack=maintain-16-byte ||
+            disable aligned_stack
+    fi
+elif enabled ccc; then
+    # disable some annoying warnings
+    add_cflags -msg_disable bitnotint
+    add_cflags -msg_disable mixfuncvoid
+    add_cflags -msg_disable nonstandcast
+    add_cflags -msg_disable unsupieee
+elif enabled gcc; then
+    check_optflags -fno-tree-vectorize
+    check_cflags -Werror=format-security
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+    check_cflags -Werror=vla
+    check_cflags -Wformat
+    check_cflags -fdiagnostics-color=auto
+    enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
+elif enabled llvm_gcc; then
+    check_cflags -mllvm -stack-alignment=16
+elif enabled clang; then
+    check_cflags -mllvm -stack-alignment=16
+    check_cflags -Qunused-arguments
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
+    check_cflags -Werror=return-type
+elif enabled cparser; then
+    add_cflags -Wno-missing-variable-declarations
+    add_cflags -Wno-empty-statement
+elif enabled armcc; then
+    add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
+    # 2523: use of inline assembly is deprecated
+    add_cflags -W${armcc_opt},--diag_suppress=2523
+    add_cflags -W${armcc_opt},--diag_suppress=1207
+    add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
+    add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
+    add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
+    add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
+elif enabled tms470; then
+    add_cflags -pds=824 -pds=837
+    disable inline_asm
+elif enabled pathscale; then
+    add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
+elif enabled_any msvc icl; then
+    enabled x86_32 && disable aligned_stack
+    enabled_all x86_32 debug && add_cflags -Oy-
+    enabled debug && add_ldflags -debug
+    enable pragma_deprecated
+    if enabled icl; then
+        # -Qansi-alias is basically -fstrict-aliasing, but does not work
+        # (correctly) on icl 13.x.
+        check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
+            add_cflags -Qansi-alias
+        # Some inline asm is not compilable in debug
+        if enabled debug; then
+            disable ebp_available
+            disable ebx_available
+        fi
+    fi
+    # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
+    check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
+    # The CRT headers contain __declspec(restrict) in a few places, but if redefining
+    # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
+    # (as it ends up if the restrict redefine is done before including stdlib.h), while
+    # MSVC 2013 and newer can handle it fine.
+    # If this declspec fails, force including stdlib.h before the restrict redefinition
+    # happens in config.h.
+    if [ $_restrict != restrict ]; then
+        check_cc <<EOF || add_cflags -FIstdlib.h
+__declspec($_restrict) void* foo(int);
+EOF
+    fi
+    check_func strtoll || add_cflags -Dstrtoll=_strtoi64
+fi
+
+for pfx in "" host_; do
+    varname=${pfx%_}cc_type
+    eval "type=\$$varname"
+    if [ $type = "msvc" ]; then
+        check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
+static inline int foo(int a) { return a; }
+EOF
+    fi
+done
+
+case $as_type in
+    clang)
+        add_asflags -Qunused-arguments
+    ;;
+esac
+
+case $ld_type in
+    clang)
+        check_ldflags -Qunused-arguments
+    ;;
+esac
+
+case $target_os in
+    osf1)
+        enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
+    ;;
+    plan9)
+        add_cppflags -Dmain=plan9_main
+    ;;
+esac
+
+enable frame_thread_encoder
+
+enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
+
+check_deps $CONFIG_LIST       \
+           $CONFIG_EXTRA      \
+           $HAVE_LIST         \
+           $ALL_COMPONENTS    \
+
+enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
+
+
+if test $target_os = "haiku"; then
+    disable memalign
+    disable posix_memalign
+fi
+
+enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
+    prepend ffmpeg_libs $($ldflags_filter "-lole32" "-luser32") &&
+    enable dxva2_lib
+
+! enabled_any memalign posix_memalign aligned_malloc &&
+    enabled simd_align_16 && enable memalign_hack
+
+# add_dep lib dep
+# -> enable ${lib}_deps_${dep}
+# -> add $dep to ${lib}_deps only once
+add_dep() {
+    lib=$1
+    dep=$2
+    enabled "${lib}_deps_${dep}" && return 0
+    enable  "${lib}_deps_${dep}"
+    prepend "${lib}_deps" $dep
+}
+
+# merge deps lib components
+# merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
+merge_deps() {
+    lib=$1
+    shift
+    for comp in $*; do
+        enabled $comp || continue
+        eval "dep=\"\$${comp}_deps\""
+        for d in $dep; do
+            add_dep $lib $d
+        done
+    done
+}
+
+merge_deps libavfilter $FILTER_LIST
+
+map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
+
+for thread in $THREADS_LIST; do
+    if enabled $thread; then
+        test -n "$thread_type" &&
+            die "ERROR: Only one thread type must be selected." ||
+            thread_type="$thread"
+    fi
+done
+
+enabled zlib && add_cppflags -DZLIB_CONST
+
+# conditional library dependencies, in linking order
+enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
+enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
+enabled aresample_filter    && prepend avfilter_deps "swresample"
+enabled asyncts_filter      && prepend avfilter_deps "avresample"
+enabled atempo_filter       && prepend avfilter_deps "avcodec"
+enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
+enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
+enabled elbg_filter         && prepend avfilter_deps "avcodec"
+enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
+enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
+enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
+enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
+enabled pan_filter          && prepend avfilter_deps "swresample"
+enabled pp_filter           && prepend avfilter_deps "postproc"
+enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
+enabled resample_filter && prepend avfilter_deps "avresample"
+enabled sab_filter          && prepend avfilter_deps "swscale"
+enabled scale_filter    && prepend avfilter_deps "swscale"
+enabled scale2ref_filter    && prepend avfilter_deps "swscale"
+enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
+enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
+enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
+enabled showspectrum_filter && prepend avfilter_deps "avcodec"
+enabled smartblur_filter    && prepend avfilter_deps "swscale"
+enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
+enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
+enabled uspp_filter         && prepend avfilter_deps "avcodec"
+
+enabled lavfi_indev         && prepend avdevice_deps "avfilter"
+
+enabled opus_decoder    && prepend avcodec_deps "swresample"
+
+expand_deps(){
+    lib_deps=${1}_deps
+    eval "deps=\$$lib_deps"
+    append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
+    unique $lib_deps
+}
+
+#we have to remove gpl from the deps here as some code assumes all lib deps are libs
+postproc_deps="$(filter_out 'gpl' $postproc_deps)"
+
+map 'expand_deps $v' $LIBRARY_LIST
+
+echo "install prefix            $prefix"
+echo "source path               $source_path"
+echo "C compiler                $cc"
+echo "C library                 $libc_type"
+if test "$host_cc" != "$cc"; then
+    echo "host C compiler           $host_cc"
+    echo "host C library            $host_libc_type"
+fi
+echo "ARCH                      $arch ($cpu)"
+if test "$build_suffix" != ""; then
+    echo "build suffix              $build_suffix"
+fi
+if test "$progs_suffix" != ""; then
+    echo "progs suffix              $progs_suffix"
+fi
+if test "$extra_version" != ""; then
+    echo "version string suffix     $extra_version"
+fi
+echo "big-endian                ${bigendian-no}"
+echo "runtime cpu detection     ${runtime_cpudetect-no}"
+if enabled x86; then
+    echo "${yasmexe}                      ${yasm-no}"
+    echo "MMX enabled               ${mmx-no}"
+    echo "MMXEXT enabled            ${mmxext-no}"
+    echo "3DNow! enabled            ${amd3dnow-no}"
+    echo "3DNow! extended enabled   ${amd3dnowext-no}"
+    echo "SSE enabled               ${sse-no}"
+    echo "SSSE3 enabled             ${ssse3-no}"
+    echo "AESNI enabled             ${aesni-no}"
+    echo "AVX enabled               ${avx-no}"
+    echo "XOP enabled               ${xop-no}"
+    echo "FMA3 enabled              ${fma3-no}"
+    echo "FMA4 enabled              ${fma4-no}"
+    echo "i686 features enabled     ${i686-no}"
+    echo "CMOV is fast              ${fast_cmov-no}"
+    echo "EBX available             ${ebx_available-no}"
+    echo "EBP available             ${ebp_available-no}"
+fi
+if enabled aarch64; then
+    echo "NEON enabled              ${neon-no}"
+    echo "VFP enabled               ${vfp-no}"
+fi
+if enabled arm; then
+    echo "ARMv5TE enabled           ${armv5te-no}"
+    echo "ARMv6 enabled             ${armv6-no}"
+    echo "ARMv6T2 enabled           ${armv6t2-no}"
+    echo "VFP enabled               ${vfp-no}"
+    echo "NEON enabled              ${neon-no}"
+    echo "THUMB enabled             ${thumb-no}"
+fi
+if enabled mips; then
+    echo "MIPS FPU enabled          ${mipsfpu-no}"
+    echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
+    echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
+    echo "MIPS MSA enabled          ${msa-no}"
+    echo "LOONGSON MMI enabled      ${mmi-no}"
+fi
+if enabled ppc; then
+    echo "AltiVec enabled           ${altivec-no}"
+    echo "VSX enabled               ${vsx-no}"
+    echo "POWER8 enabled            ${power8-no}"
+    echo "PPC 4xx optimizations     ${ppc4xx-no}"
+    echo "dcbzl available           ${dcbzl-no}"
+fi
+echo "debug symbols             ${debug-no}"
+echo "strip symbols             ${stripping-no}"
+echo "optimize for size         ${small-no}"
+echo "optimizations             ${optimizations-no}"
+echo "static                    ${static-no}"
+echo "shared                    ${shared-no}"
+echo "postprocessing support    ${postproc-no}"
+echo "new filter support        ${avfilter-no}"
+echo "network support           ${network-no}"
+echo "threading support         ${thread_type-no}"
+echo "safe bitstream reader     ${safe_bitstream_reader-no}"
+echo "SDL support               ${sdl-no}"
+echo "opencl enabled            ${opencl-no}"
+echo "JNI support               ${jni-no}"
+echo "texi2html enabled         ${texi2html-no}"
+echo "perl enabled              ${perl-no}"
+echo "pod2man enabled           ${pod2man-no}"
+echo "makeinfo enabled          ${makeinfo-no}"
+echo "makeinfo supports HTML    ${makeinfo_html-no}"
+test -n "$random_seed" &&
+    echo "random seed               ${random_seed}"
+echo
+
+echo "Enabled programs:"
+print_enabled '' $PROGRAM_LIST | print_in_columns
+echo
+
+echo "External libraries:"
+print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "External libraries providing hardware acceleration:"
+print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
+echo
+
+echo "Libraries:"
+print_enabled '' $LIBRARY_LIST | print_in_columns
+echo
+
+for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
+    echo "Enabled ${type}s:"
+    eval list=\$$(toupper $type)_LIST
+    print_enabled '_*' $list | print_in_columns
+    echo
+done
+
+license="LGPL version 2.1 or later"
+if enabled nonfree; then
+    license="nonfree and unredistributable"
+elif enabled gplv3; then
+    license="GPL version 3 or later"
+elif enabled lgplv3; then
+    license="LGPL version 3 or later"
+elif enabled gpl; then
+    license="GPL version 2 or later"
+fi
+
+echo "License: $license"
+
+echo "Creating config.mak, config.h, and doc/config.texi..."
+
+test -e Makefile || echo "include $source_path/Makefile" > Makefile
+
+enabled stripping || strip="echo skipping strip"
+
+config_files="$TMPH config.mak doc/config.texi"
+
+cat > config.mak <<EOF
+# Automatically generated by configure - do not modify!
+ifndef FFMPEG_CONFIG_MAK
+FFMPEG_CONFIG_MAK=1
+FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
+prefix=$prefix
+LIBDIR=\$(DESTDIR)$libdir
+SHLIBDIR=\$(DESTDIR)$shlibdir
+INCDIR=\$(DESTDIR)$incdir
+BINDIR=\$(DESTDIR)$bindir
+DATADIR=\$(DESTDIR)$datadir
+DOCDIR=\$(DESTDIR)$docdir
+MANDIR=\$(DESTDIR)$mandir
+PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
+INSTALL_NAME_DIR=$install_name_dir
+SRC_PATH=$source_path
+SRC_LINK=$source_link
+ifndef MAIN_MAKEFILE
+SRC_PATH:=\$(SRC_PATH:.%=..%)
+endif
+CC_IDENT=$cc_ident
+ARCH=$arch
+INTRINSICS=$intrinsics
+CC=$cc
+CXX=$cxx
+AS=$as
+OBJCC=$objcc
+LD=$ld
+DEPCC=$dep_cc
+DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
+DEPAS=$as
+DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
+YASM=$yasmexe
+DEPYASM=$yasmexe
+AR=$ar
+ARFLAGS=$arflags
+AR_O=$ar_o
+RANLIB=$ranlib
+STRIP=$strip
+CP=cp -p
+LN_S=$ln_s
+CPPFLAGS=$CPPFLAGS
+CFLAGS=$CFLAGS
+CXXFLAGS=$CXXFLAGS
+OBJCFLAGS=$OBJCFLAGS
+ASFLAGS=$ASFLAGS
+AS_C=$AS_C
+AS_O=$AS_O
+OBJCC_C=$OBJCC_C
+OBJCC_E=$OBJCC_E
+OBJCC_O=$OBJCC_O
+CC_C=$CC_C
+CC_E=$CC_E
+CC_O=$CC_O
+CXX_C=$CXX_C
+CXX_O=$CXX_O
+LD_O=$LD_O
+LD_LIB=$LD_LIB
+LD_PATH=$LD_PATH
+DLLTOOL=$dlltool
+WINDRES=$windres
+DEPWINDRES=$dep_cc
+DOXYGEN=$doxygen
+LDFLAGS=$LDFLAGS
+LDEXEFLAGS=$LDEXEFLAGS
+LDLIBFLAGS=$LDLIBFLAGS
+SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
+ASMSTRIPFLAGS=$ASMSTRIPFLAGS
+YASMFLAGS=$YASMFLAGS
+BUILDSUF=$build_suffix
+PROGSSUF=$progs_suffix
+FULLNAME=$FULLNAME
+LIBPREF=$LIBPREF
+LIBSUF=$LIBSUF
+LIBNAME=$LIBNAME
+SLIBPREF=$SLIBPREF
+SLIBSUF=$SLIBSUF
+EXESUF=$EXESUF
+EXTRA_VERSION=$extra_version
+CCDEP=$CCDEP
+CXXDEP=$CXXDEP
+CCDEP_FLAGS=$CCDEP_FLAGS
+ASDEP=$ASDEP
+ASDEP_FLAGS=$ASDEP_FLAGS
+CC_DEPFLAGS=$CC_DEPFLAGS
+AS_DEPFLAGS=$AS_DEPFLAGS
+HOSTCC=$host_cc
+HOSTLD=$host_ld
+HOSTCFLAGS=$host_cflags
+HOSTCPPFLAGS=$host_cppflags
+HOSTEXESUF=$HOSTEXESUF
+HOSTLDFLAGS=$host_ldflags
+HOSTLIBS=$host_libs
+DEPHOSTCC=$host_cc
+DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
+HOSTCCDEP=$HOSTCCDEP
+HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
+HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
+HOSTCC_C=$HOSTCC_C
+HOSTCC_O=$HOSTCC_O
+HOSTLD_O=$HOSTLD_O
+TARGET_EXEC=$target_exec $target_exec_args
+TARGET_PATH=$target_path
+TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
+CFLAGS-ffplay=$sdl_cflags
+ZLIB=$($ldflags_filter -lz)
+LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
+EXTRALIBS=$extralibs
+COMPAT_OBJS=$compat_objs
+EXEOBJS=$exeobjs
+INSTALL=$install
+LIBTARGET=${LIBTARGET}
+SLIBNAME=${SLIBNAME}
+SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
+SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
+SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
+SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
+SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
+SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
+SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
+SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
+SAMPLES:=${samples:-\$(FATE_SAMPLES)}
+NOREDZONE_FLAGS=$noredzone_flags
+EOF
+
+get_version(){
+    lcname=lib${1}
+    name=$(toupper $lcname)
+    file=$source_path/$lcname/version.h
+    eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
+    enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
+    eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
+    eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
+    eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
+    eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
+}
+
+map 'get_version $v' $LIBRARY_LIST
+
+map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
+
+print_program_libs(){
+    eval "program_libs=\$${1}_libs"
+    eval echo "LIBS-${1}=${program_libs}" >> config.mak
+}
+
+map 'print_program_libs $v' $PROGRAM_LIST
+
+cat > $TMPH <<EOF
+/* Automatically generated by configure - do not modify! */
+#ifndef FFMPEG_CONFIG_H
+#define FFMPEG_CONFIG_H
+#define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
+#define FFMPEG_LICENSE "$(c_escape $license)"
+#define CONFIG_THIS_YEAR 2016
+#define FFMPEG_DATADIR "$(eval c_escape $datadir)"
+#define AVCONV_DATADIR "$(eval c_escape $datadir)"
+#define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
+#define av_restrict $_restrict
+#define EXTERN_PREFIX "${extern_prefix}"
+#define EXTERN_ASM ${extern_prefix}
+#define BUILDSUF "$build_suffix"
+#define SLIBSUF "$SLIBSUF"
+#define HAVE_MMX2 HAVE_MMXEXT
+#define SWS_MAX_FILTER_SIZE $sws_max_filter_size
+EOF
+
+test -n "$assert_level" &&
+    echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
+
+test -n "$malloc_prefix" &&
+    echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
+
+if enabled yasm; then
+    append config_files $TMPASM
+    printf '' >$TMPASM
+fi
+
+enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
+
+
+mkdir -p doc
+mkdir -p tests
+mkdir -p tests/api
+echo "@c auto-generated by configure - do not modify! " > doc/config.texi
+
+print_config ARCH_   "$config_files" $ARCH_LIST
+print_config HAVE_   "$config_files" $HAVE_LIST
+print_config CONFIG_ "$config_files" $CONFIG_LIST       \
+                                     $CONFIG_EXTRA      \
+                                     $ALL_COMPONENTS    \
+
+echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
+echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
+
+# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
+cp_if_changed $TMPH config.h
+touch .config
+
+enabled yasm && cp_if_changed $TMPASM config.asm
+
+cat > $TMPH <<EOF
+/* Generated by ffconf */
+#ifndef AVUTIL_AVCONFIG_H
+#define AVUTIL_AVCONFIG_H
+EOF
+
+print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
+
+echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
+
+cp_if_changed $TMPH libavutil/avconfig.h
+
+if test -n "$WARNINGS"; then
+    printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
+    enabled fatal_warnings && exit 1
+fi
+
+# generate the lists of enabled components
+print_enabled_components(){
+    file=$1
+    struct_name=$2
+    name=$3
+    shift 3
+    echo "static const $struct_name *$name[] = {" > $TMPH
+    for c in $*; do
+        enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
+    done
+    echo "    NULL };" >> $TMPH
+    cp_if_changed $TMPH $file
+}
+
+print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
+print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
+
+# build pkg-config files
+
+lib_version(){
+    eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
+}
+
+pkgconfig_generate(){
+    name=$1
+    shortname=${name#lib}${build_suffix}
+    comment=$2
+    version=$3
+    libs=$4
+    requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
+    requires=${requires%, }
+    enabled ${name#lib} || return 0
+    mkdir -p $name
+    cat <<EOF > $name/$name${build_suffix}.pc
+prefix=$prefix
+exec_prefix=\${prefix}
+libdir=$libdir
+includedir=$incdir
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $(enabled shared || echo $requires)
+Requires.private: $(enabled shared && echo $requires)
+Conflicts:
+Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
+Libs.private: $(enabled shared && echo $libs)
+Cflags: -I\${includedir}
+EOF
+
+mkdir -p doc/examples/pc-uninstalled
+includedir=${source_path}
+[ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
+    cat <<EOF > doc/examples/pc-uninstalled/$name.pc
+prefix=
+exec_prefix=
+libdir=\${pcfiledir}/../../../$name
+includedir=${includedir}
+
+Name: $name
+Description: $comment
+Version: $version
+Requires: $requires
+Conflicts:
+Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
+Cflags: -I\${includedir}
+EOF
+}
+
+pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
+pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
+pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
+pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
+pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
+pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
+pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
+pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
+pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"
diff --git a/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/file.list b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/file.list
new file mode 100644
index 000000000..11229e678
--- /dev/null
+++ b/sources/packages/m/ffmpeg/create-3.1.4-pthreads-patch/file.list
@@ -0,0 +1 @@
+ffmpeg-3.1.4/configure
diff --git a/sources/packages/m/ffmpeg/patches/README b/sources/packages/m/ffmpeg/patches/README
new file mode 100644
index 000000000..ab5e5ff63
--- /dev/null
+++ b/sources/packages/m/ffmpeg/patches/README
@@ -0,0 +1,12 @@
+
+/* begin *
+
+   ffmpeg-3.1.4-openjpeg.patch  - disable checking openjp2 library which has not
+                                  a static variant (not needed, just for information);
+   ffmpeg-3.1.4-pthreads.patch  - fix -pthread options passed to CC and LD (not needed);
+   ffmpeg-3.1.4-configure.patch - common patch which includes two first patches and also
+                                  adds privately used libs by external libraries;
+
+   ffmpeg-3.1.4-openh264.patch  - enable external openh264 lib.
+
+ * end */