4f1933620f571 (Paul Smith 2006-03-05 17:14:10 -0500 1) #
4f1933620f571 (Paul Smith 2006-03-05 17:14:10 -0500 2) # This file is included by the global makefile so that you can add your own
4f1933620f571 (Paul Smith 2006-03-05 17:14:10 -0500 3) # architecture-specific flags and dependencies.
4f1933620f571 (Paul Smith 2006-03-05 17:14:10 -0500 4) #
4c9e13851315a (Jeff Dike 2007-10-16 01:26:54 -0700 5) # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 6) # Licensed under the GPL
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 7) #
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 8)
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 9) # select defconfig based on actual architecture
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 10) ifeq ($(SUBARCH),x86)
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 11) ifeq ($(shell uname -m),x86_64)
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 12) KBUILD_DEFCONFIG := x86_64_defconfig
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 13) else
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 14) KBUILD_DEFCONFIG := i386_defconfig
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 15) endif
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 16) else
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 17) KBUILD_DEFCONFIG := $(SUBARCH)_defconfig
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 18) endif
e40f04d040c66 (Ramkumar Ramachandra 2013-09-27 09:44:46 +0530 19)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 20) ARCH_DIR := arch/um
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 21) OS := $(shell uname -s)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 22) # We require bash because the vmlinux link and loader script cpp use bash
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 23) # features.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 24) SHELL := /bin/bash
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 25)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 26) core-y += $(ARCH_DIR)/kernel/ \
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 27) $(ARCH_DIR)/drivers/ \
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 28) $(ARCH_DIR)/os-$(OS)/
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 29)
8569c9140bd41 (Al Viro 2008-08-17 13:48:37 -0400 30) MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 31)
7bbe7204e9373 (Al Viro 2011-08-18 20:06:29 +0100 32) HEADER_ARCH := $(SUBARCH)
7bbe7204e9373 (Al Viro 2011-08-18 20:06:29 +0100 33)
fff6540cbcb56 (Richard Weinberger 2013-11-29 15:39:41 +0100 34) ifneq ($(filter $(SUBARCH),x86 x86_64 i386),)
fff6540cbcb56 (Richard Weinberger 2013-11-29 15:39:41 +0100 35) HEADER_ARCH := x86
7bbe7204e9373 (Al Viro 2011-08-18 20:06:29 +0100 36) endif
fff6540cbcb56 (Richard Weinberger 2013-11-29 15:39:41 +0100 37)
fff6540cbcb56 (Richard Weinberger 2013-11-29 15:39:41 +0100 38) ifdef CONFIG_64BIT
12783aa077f81 (Richard Weinberger 2012-01-24 20:09:12 +0100 39) KBUILD_CFLAGS += -mcmodel=large
7bbe7204e9373 (Al Viro 2011-08-18 20:06:29 +0100 40) endif
7bbe7204e9373 (Al Viro 2011-08-18 20:06:29 +0100 41)
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 42) HOST_DIR := arch/$(HEADER_ARCH)
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 43)
d828563955057 (Masahiro Yamada 2021-07-25 03:35:56 +0900 44) include $(srctree)/$(ARCH_DIR)/Makefile-skas
d828563955057 (Masahiro Yamada 2021-07-25 03:35:56 +0900 45) include $(srctree)/$(HOST_DIR)/Makefile.um
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 46)
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 47) core-y += $(HOST_DIR)/um/
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 48)
22409f9c80d0a (Al Viro 2009-01-05 17:18:42 +0000 49) SHARED_HEADERS := $(ARCH_DIR)/include/shared
22409f9c80d0a (Al Viro 2009-01-05 17:18:42 +0000 50) ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS)
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 51) ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared
5c48b108ecbf6 (Al Viro 2011-08-18 20:06:39 +0100 52) KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 53)
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 54) # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 55) # named - it's a common symbol in libpcap, so we get a binary which crashes.
fd7481047882e (Paolo 'Blaisorblade' Giarrusso 2005-09-21 18:39:32 +0200 56) #
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 57) # Same things for in6addr_loopback and mktime - found in libc. For these two we
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 58) # only get link-time error, luckily.
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 59) #
f44f1e7da7c8e (Florian Fainelli 2017-05-23 17:32:31 -0700 60) # -Dlongjmp=kernel_longjmp prevents anything from referencing the libpthread.a
f44f1e7da7c8e (Florian Fainelli 2017-05-23 17:32:31 -0700 61) # embedded copy of longjmp, same thing for setjmp.
f44f1e7da7c8e (Florian Fainelli 2017-05-23 17:32:31 -0700 62) #
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 63) # These apply to USER_CFLAGS to.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 64)
dc5be20a64543 (Al Viro 2012-02-11 05:39:56 -0500 65) KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 66) $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
f44f1e7da7c8e (Florian Fainelli 2017-05-23 17:32:31 -0700 67) -Dlongjmp=kernel_longjmp -Dsetjmp=kernel_setjmp \
818f6ef407b44 (Jeff Dike 2007-10-16 01:26:45 -0700 68) -Din6addr_loopback=kernel_in6addr_loopback \
2c51a4bc02334 (Al Viro 2011-09-14 16:21:38 -0700 69) -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
fd7481047882e (Paolo 'Blaisorblade' Giarrusso 2005-09-21 18:39:32 +0200 70)
222d394d30e74 (Sam Ravnborg 2007-10-15 21:59:31 +0200 71) KBUILD_AFLAGS += $(ARCH_INCLUDE)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 72)
298e20ba8c197 (Richard Weinberger 2015-05-31 19:50:57 +0200 73) USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
298e20ba8c197 (Richard Weinberger 2015-05-31 19:50:57 +0200 74) $(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
0b5aedfe0e665 (Richard Weinberger 2015-06-28 22:55:26 +0200 75) -D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \
75dd47472b92c (Masahiro Yamada 2019-07-06 12:07:11 +0900 76) -idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__
d45e44d4be60e (akpm@osdl.org 2006-10-29 22:46:42 -0800 77)
d45e44d4be60e (akpm@osdl.org 2006-10-29 22:46:42 -0800 78) #This will adjust *FLAGS accordingly to the platform.
d828563955057 (Masahiro Yamada 2021-07-25 03:35:56 +0900 79) include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
ecc354a90af90 (Paolo 'Blaisorblade' Giarrusso 2005-07-14 00:33:41 -0700 80)
c9b284b2024e5 (H. Peter Anvin 2011-12-05 16:03:30 -0800 81) KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
abbf1590de22a (David Howells 2012-10-02 18:01:26 +0100 82) -I$(srctree)/$(HOST_DIR)/include/uapi \
58ab5e0c2c40e (Arnd Bergmann 2016-06-15 17:45:46 +0200 83) -I$(objtree)/$(HOST_DIR)/include/generated \
58ab5e0c2c40e (Arnd Bergmann 2016-06-15 17:45:46 +0200 84) -I$(objtree)/$(HOST_DIR)/include/generated/uapi
1de1502c96c3c (Al Viro 2008-08-17 22:54:55 -0400 85)
ecc354a90af90 (Paolo 'Blaisorblade' Giarrusso 2005-07-14 00:33:41 -0700 86) # -Derrno=kernel_errno - This turns all kernel references to errno into
ecc354a90af90 (Paolo 'Blaisorblade' Giarrusso 2005-07-14 00:33:41 -0700 87) # kernel_errno to separate them from the libc errno. This allows -fno-common
a0f97e06a43cf (Sam Ravnborg 2007-10-14 22:21:35 +0200 88) # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different
ecc354a90af90 (Paolo 'Blaisorblade' Giarrusso 2005-07-14 00:33:41 -0700 89) # errnos.
98105d47d3d62 (Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:25 -0800 90) # These apply to kernelspace only.
f15cf5151c3ec (Jeff Dike 2007-11-05 14:50:59 -0800 91) #
f15cf5151c3ec (Jeff Dike 2007-11-05 14:50:59 -0800 92) # strip leading and trailing whitespace to make the USER_CFLAGS removal of these
f15cf5151c3ec (Jeff Dike 2007-11-05 14:50:59 -0800 93) # defines more robust
ecc354a90af90 (Paolo 'Blaisorblade' Giarrusso 2005-07-14 00:33:41 -0700 94)
f15cf5151c3ec (Jeff Dike 2007-11-05 14:50:59 -0800 95) KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
f15cf5151c3ec (Jeff Dike 2007-11-05 14:50:59 -0800 96) -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
a0f97e06a43cf (Sam Ravnborg 2007-10-14 22:21:35 +0200 97) KBUILD_CFLAGS += $(KERNEL_DEFINES)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 98)
4f1933620f571 (Paul Smith 2006-03-05 17:14:10 -0500 99) PHONY += linux
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 100)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 101) all: linux
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 102)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 103) linux: vmlinux
a4b741e380cb5 (Jeff Dike 2006-05-01 12:16:06 -0700 104) @echo ' LINK $@'
cb8aa3d29b562 (Paolo 'Blaisorblade' Giarrusso 2006-05-01 12:16:03 -0700 105) $(Q)ln -f $< $@
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 106)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 107) define archhelp
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 108) echo '* linux - Binary kernel image (./linux) - for backward'
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 109) echo ' compatibility only, this creates a hard link to the'
4b3f686d4aa8a (Matt LaPlante 2006-10-03 22:21:02 +0200 110) echo ' real kernel binary, the "vmlinux" binary you'
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 111) echo ' find in the kernel root.'
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 112) endef
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 113)
c9b284b2024e5 (H. Peter Anvin 2011-12-05 16:03:30 -0800 114) archheaders:
0004438a165b1 (Masahiro Yamada 2018-08-04 13:47:03 +0900 115) $(Q)$(MAKE) -f $(srctree)/Makefile ARCH=$(HEADER_ARCH) asm-generic archheaders
699d7a5734c90 (Al Viro 2017-09-04 02:37:17 -0400 116)
65bba0423ecf8 (Masahiro Yamada 2018-11-29 11:58:50 +0900 117) archprepare:
65bba0423ecf8 (Masahiro Yamada 2018-11-29 11:58:50 +0900 118) $(Q)$(MAKE) $(build)=$(HOST_DIR)/um include/generated/user_constants.h
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 119)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 120) LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
386093c68ba3e (Johannes Berg 2021-03-08 14:02:37 +0100 121) LINK-$(CONFIG_LD_SCRIPT_DYN) += $(call cc-option, -no-pie)
386093c68ba3e (Johannes Berg 2021-03-08 14:02:37 +0100 122) LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 123)
275e6e1ee2baf (Paolo 'Blaisorblade' Giarrusso 2006-05-01 12:16:04 -0700 124) CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
893ab00439a45 (Masahiro Yamada 2020-06-27 03:59:12 +0900 125) -fno-stack-protector $(call cc-option, -fno-stack-protector-all)
275e6e1ee2baf (Paolo 'Blaisorblade' Giarrusso 2006-05-01 12:16:04 -0700 126)
51b563fc93c8c (Sam Ravnborg 2009-09-20 12:28:22 +0200 127) # Options used by linker script
51b563fc93c8c (Sam Ravnborg 2009-09-20 12:28:22 +0200 128) export LDS_START := $(START)
51b563fc93c8c (Sam Ravnborg 2009-09-20 12:28:22 +0200 129) export LDS_ELF_ARCH := $(ELF_ARCH)
51b563fc93c8c (Sam Ravnborg 2009-09-20 12:28:22 +0200 130) export LDS_ELF_FORMAT := $(ELF_FORMAT)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 131)
4c9e13851315a (Jeff Dike 2007-10-16 01:26:54 -0700 132) # The wrappers will select whether using "malloc" or the kernel allocator.
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 133) LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 134)
d503ac531a524 (Masahiro Yamada 2018-08-24 08:20:39 +0900 135) LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS),-Wl,$(opt))
0ba7fe03b638a (Jeff Dike 2008-02-04 22:30:45 -0800 136)
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 137) # Used by link-vmlinux.sh which has special support for um link
1f2bfbd00e466 (Sam Ravnborg 2012-05-05 10:18:41 +0200 138) export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 139)
4c9e13851315a (Jeff Dike 2007-10-16 01:26:54 -0700 140) # When cleaning we don't include .config, so we don't include
4c9e13851315a (Jeff Dike 2007-10-16 01:26:54 -0700 141) # TT or skas makefiles and don't clean skas_ptregs.h.
9e636452d0714 (Al Viro 2011-08-18 20:01:49 +0100 142) CLEAN_FILES += linux x.i gmon.out
0663c68c4d2d3 (Masahiro Yamada 2020-05-04 17:08:07 +0900 143) MRPROPER_FILES += arch/$(SUBARCH)/include/generated
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 144)
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 145) archclean:
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 146) @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 147) -o -name '*.gcov' \) -type f -print | xargs rm -f
^1da177e4c3f4 (Linus Torvalds 2005-04-16 15:20:36 -0700 148)
79b05c1f31e2e (Christoph Hellwig 2018-07-31 13:39:26 +0200 149) export HEADER_ARCH SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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