author: Linus Torvalds <torvalds@linux-foundation.org> 2021-02-25 10:17:31 -0800
committer: Linus Torvalds <torvalds@linux-foundation.org> 2021-02-25 10:17:31 -0800
commit: 6fbd6cf85a3be127454a1ad58525a3adcf8612ab
parent: 6f9972bbfef57019519e1685254e876913a70463
Commit Summary:
Diffstat:
20 files changed, 371 insertions, 210 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 08e011175b4c..509e0856d653 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -141,13 +141,9 @@ cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 ] && echo $(3) || e
# Usage: KBUILD_LDFLAGS += $(call ld-option, -X, -Y)
ld-option = $(call try-run, $(LD) $(KBUILD_LDFLAGS) $(1) -v,$(1),$(2),$(3))
-# ld-version
-# Note this is mainly for HJ Lu's 3 number binutil versions
-ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
-
# ld-ifversion
# Usage: $(call ld-ifversion, -ge, 22252, y)
-ld-ifversion = $(shell [ $(ld-version) $(1) $(2) ] && echo $(3) || echo $(4))
+ld-ifversion = $(shell [ $(CONFIG_LD_VERSION)0 $(1) $(2)0 ] && echo $(3) || echo $(4))
######
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index a5fe72c504ff..58fdb5308725 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -39,8 +39,17 @@ as-instr = $(success,printf "%b\n" "$(1)" | $(CC) $(CLANG_FLAGS) -c -x assembler
$(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found)
$(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
-# Fail if the linker is gold as it's not capable of linking the kernel proper
-$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
+# Get the compiler name, version, and error out if it is not supported.
+cc-info := $(shell,$(srctree)/scripts/cc-version.sh $(CC))
+$(error-if,$(success,test -z "$(cc-info)"),Sorry$(comma) this compiler is not supported.)
+cc-name := $(shell,set -- $(cc-info) && echo $1)
+cc-version := $(shell,set -- $(cc-info) && echo $2)
+
+# Get the linker name, version, and error out if it is not supported.
+ld-info := $(shell,$(srctree)/scripts/ld-version.sh $(LD))
+$(error-if,$(success,test -z "$(ld-info)"),Sorry$(comma) this linker is not supported.)
+ld-name := $(shell,set -- $(ld-info) && echo $1)
+ld-version := $(shell,set -- $(ld-info) && echo $2)
# machine bit flags
# $(m32-flag): -m32 if the compiler supports it, or an empty string otherwise.
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 3f6bf0ea7c0e..1b6094a13034 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -15,7 +15,6 @@ obj-y :=
obj-m :=
lib-y :=
lib-m :=
-always :=
always-y :=
always-m :=
targets :=
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index d9e0ceace6a6..22a8172bce1f 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -34,9 +34,6 @@ __clean-files := \
$(hostprogs-always-y) $(hostprogs-always-m) $(hostprogs-always-) \
$(userprogs-always-y) $(userprogs-always-m) $(userprogs-always-)
-# deprecated
-__clean-files += $(always) $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
-
__clean-files := $(filter-out $(no-clean-files), $(__clean-files))
# clean-files is given relative to the current directory, unless it
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 9f2531567c0e..eee59184de64 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -4,18 +4,6 @@ asflags-y += $(EXTRA_AFLAGS)
ccflags-y += $(EXTRA_CFLAGS)
cppflags-y += $(EXTRA_CPPFLAGS)
ldflags-y += $(EXTRA_LDFLAGS)
-ifneq ($(always),)
-$(warning 'always' is deprecated. Please use 'always-y' instead)
-always-y += $(always)
-endif
-ifneq ($(hostprogs-y),)
-$(warning 'hostprogs-y' is deprecated. Please use 'hostprogs' instead)
-hostprogs += $(hostprogs-y)
-endif
-ifneq ($(hostprogs-m),)
-$(warning 'hostprogs-m' is deprecated. Please use 'hostprogs' instead)
-hostprogs += $(hostprogs-m)
-endif
# flags that take effect in current and sub directories
KBUILD_AFLAGS += $(subdir-asflags-y)
@@ -56,15 +44,19 @@ else
obj-y := $(filter-out %/, $(obj-y))
endif
+# Expand $(foo-objs) $(foo-y) by calling $(call suffix-search,foo.o,-objs -y)
+suffix-search = $(foreach s,$(2),$($(1:.o=$s)))
# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
-multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
-multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
+multi-search = $(sort $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)), $(m))))
+multi-used-y := $(call multi-search,$(obj-y),-objs -y)
+multi-used-m := $(call multi-search,$(obj-m),-objs -y -m)
multi-used := $(multi-used-y) $(multi-used-m)
# Replace multi-part objects by their individual parts,
# including built-in.a from subdirectories
-real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
-real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
+real-search = $(foreach m,$(1), $(if $(strip $(call suffix-search,$(m),$(2) -)),$(call suffix-search,$(m),$(2)),$(m)))
+real-obj-y := $(call real-search, $(obj-y),-objs -y)
+real-obj-m := $(call real-search, $(obj-m),-objs -y -m)
always-y += $(always-m)
@@ -81,14 +73,14 @@ always-y += $(userprogs-always-y) $(userprogs-always-m)
# DTB
# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
-extra-y += $(dtb-y)
-extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
+always-y += $(dtb-y)
+always-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
ifneq ($(CHECK_DTBS),)
-extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
-extra-y += $(patsubst %.dtbo,%.dt.yaml, $(dtb-y))
-extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
-extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtbo,%.dt.yaml, $(dtb-))
+always-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
+always-y += $(patsubst %.dtbo,%.dt.yaml, $(dtb-y))
+always-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
+always-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtbo,%.dt.yaml, $(dtb-))
endif
# Add subdir path
@@ -263,7 +255,7 @@ $(obj)/%: $(src)/%_shipped
# target: source(s) FORCE
# $(if_changed,ld/objcopy/gzip)
#
-# and add target to extra-y so that we know we have to
+# and add target to 'targets' so that we know we have to
# read in the saved command line
# Linking
diff --git a/scripts/cc-version.sh b/scripts/cc-version.sh
new file mode 100755
index 000000000000..3f2ee885b116
--- /dev/null
+++ b/scripts/cc-version.sh
@@ -0,0 +1,82 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Print the compiler name and its version in a 5 or 6-digit form.
+# Also, perform the minimum version check.
+
+set -e
+
+# When you raise the minimum compiler version, please update
+# Documentation/process/changes.rst as well.
+gcc_min_version=4.9.0
+clang_min_version=10.0.1
+icc_min_version=16.0.3 # temporary
+
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
+# https://lore.kernel.org/r/20210107111841.GN1551@shell.armlinux.org.uk
+if [ "$SRCARCH" = arm64 ]; then
+ gcc_min_version=5.1.0
+fi
+
+# Print the compiler name and some version components.
+get_compiler_info()
+{
+ cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
+ #if defined(__clang__)
+ Clang __clang_major__ __clang_minor__ __clang_patchlevel__
+ #elif defined(__INTEL_COMPILER)
+ ICC __INTEL_COMPILER __INTEL_COMPILER_UPDATE
+ #elif defined(__GNUC__)
+ GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
+ #else
+ unknown
+ #endif
+ EOF
+}
+
+# Convert the version string x.y.z to a canonical 5 or 6-digit form.
+get_canonical_version()
+{
+ IFS=.
+ set -- $1
+ echo $((10000 * $1 + 100 * $2 + $3))
+}
+
+# $@ instead of $1 because multiple words might be given, e.g. CC="ccache gcc".
+orig_args="$@"
+set -- $(get_compiler_info "$@")
+
+name=$1
+
+case "$name" in
+GCC)
+ version=$2.$3.$4
+ min_version=$gcc_min_version
+ ;;
+Clang)
+ version=$2.$3.$4
+ min_version=$clang_min_version
+ ;;
+ICC)
+ version=$(($2 / 100)).$(($2 % 100)).$3
+ min_version=$icc_min_version
+ ;;
+*)
+ echo "$orig_args: unknown compiler" >&2
+ exit 1
+ ;;
+esac
+
+cversion=$(get_canonical_version $version)
+min_cversion=$(get_canonical_version $min_version)
+
+if [ "$cversion" -lt "$min_cversion" ]; then
+ echo >&2 "***"
+ echo >&2 "*** Compiler is too old."
+ echo >&2 "*** Your $name version: $version"
+ echo >&2 "*** Minimum $name version: $min_version"
+ echo >&2 "***"
+ exit 1
+fi
+
+echo $name $cversion
diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py
index 8ddb5d099029..b7e9ecf16e56 100755
--- a/scripts/clang-tools/gen_compile_commands.py
+++ b/scripts/clang-tools/gen_compile_commands.py
@@ -20,7 +20,9 @@ _DEFAULT_LOG_LEVEL = 'WARNING'
_FILENAME_PATTERN = r'^\..*\.cmd$'
_LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$'
_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']
-
+# The tools/ directory adopts a different build system, and produces .cmd
+# files in a different format. Do not support it.
+_EXCLUDE_DIRS = ['.git', 'Documentation', 'include', 'tools']
def parse_arguments():
"""Sets up and parses command-line arguments.
@@ -80,8 +82,14 @@ def cmdfiles_in_dir(directory):
"""
filename_matcher = re.compile(_FILENAME_PATTERN)
+ exclude_dirs = [ os.path.join(directory, d) for d in _EXCLUDE_DIRS ]
+
+ for dirpath, dirnames, filenames in os.walk(directory, topdown=True):
+ # Prune unwanted directories.
+ if dirpath in exclude_dirs:
+ dirnames[:] = []
+ continue
- for dirpath, _, filenames in os.walk(directory):
for filename in filenames:
if filename_matcher.match(filename):
yield os.path.join(dirpath, filename)
diff --git a/scripts/clang-version.sh b/scripts/clang-version.sh
deleted file mode 100755
index 6fabf0695761..000000000000
--- a/scripts/clang-version.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# clang-version clang-command
-#
-# Print the compiler version of `clang-command' in a 5 or 6-digit form
-# such as `50001' for clang-5.0.1 etc.
-
-compiler="$*"
-
-if ! ( $compiler --version | grep -q clang) ; then
- echo 0
- exit 1
-fi
-
-MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1)
-MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1)
-PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
-printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
diff --git a/scripts/gcc-version.sh b/scripts/gcc-version.sh
deleted file mode 100755
index ae353432539b..000000000000
--- a/scripts/gcc-version.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# gcc-version gcc-command
-#
-# Print the gcc version of `gcc-command' in a 5 or 6-digit form
-# such as `29503' for gcc-2.95.3, `30301' for gcc-3.3.1, etc.
-
-compiler="$*"
-
-if [ ${#compiler} -eq 0 ]; then
- echo "Error: No compiler specified." >&2
- printf "Usage:\n\t$0 <gcc-command>\n" >&2
- exit 1
-fi
-
-MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
-MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
-PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1)
-printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
diff --git a/scripts/gdb/linux/Makefile b/scripts/gdb/linux/Makefile
index 124755087510..48941faa6ea6 100644
--- a/scripts/gdb/linux/Makefile
+++ b/scripts/gdb/linux/Makefile
@@ -7,7 +7,7 @@ symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py))
quiet_cmd_symlink = SYMLINK $@
cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(srctree))/$(src)/%,$@) $@
-extra-y += $(symlinks)
+always-y += $(symlinks)
$(addprefix $(obj)/, $(symlinks)): FORCE
$(call if_changed,symlink)
@@ -18,7 +18,7 @@ quiet_cmd_gen_constants_py = GEN $@
$(CPP) -E -x c -P $(c_flags) $< > $@ ;\
sed -i '1,/<!-- end-c-headers -->/d;' $@
-extra-y += constants.py
+always-y += constants.py
$(obj)/constants.py: $(src)/constants.py.in FORCE
$(call if_changed_dep,gen_constants_py)
diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c
index 23eff234184f..4827c5abe5b7 100644
--- a/scripts/genksyms/genksyms.c
+++ b/scripts/genksyms/genksyms.c
@@ -29,7 +29,7 @@ static struct symbol *symtab[HASH_BUCKETS];
static FILE *debugfile;
int cur_line = 1;
-char *cur_filename, *source_file;
+char *cur_filename;
int in_source_file;
static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
diff --git a/scripts/genksyms/genksyms.h b/scripts/genksyms/genksyms.h
index 2bcdb9bebab4..21ed2ec2d98c 100644
--- a/scripts/genksyms/genksyms.h
+++ b/scripts/genksyms/genksyms.h
@@ -47,7 +47,7 @@ typedef struct string_list **yystype;
#define YYSTYPE yystype
extern int cur_line;
-extern char *cur_filename, *source_file;
+extern char *cur_filename;
extern int in_source_file;
struct symbol *find_symbol(const char *name, enum symbol_type ns, int exact);
diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l
index ae76472efc43..a4d7495eaf75 100644
--- a/scripts/genksyms/lex.l
+++ b/scripts/genksyms/lex.l
@@ -119,12 +119,11 @@ yylex(void)
static enum {
ST_NOTSTARTED, ST_NORMAL, ST_ATTRIBUTE, ST_ASM, ST_TYPEOF, ST_TYPEOF_1,
ST_BRACKET, ST_BRACE, ST_EXPRESSION, ST_STATIC_ASSERT,
- ST_TABLE_1, ST_TABLE_2, ST_TABLE_3, ST_TABLE_4,
- ST_TABLE_5, ST_TABLE_6
} lexstate = ST_NOTSTARTED;
static int suppress_type_lookup, dont_want_brace_phrase;
static struct string_list *next_node;
+ static char *source_file;
int token, count = 0;
struct string_list *cur_node;
@@ -235,7 +234,6 @@ repeat:
lexstate = ST_EXPRESSION;
break;
- case DOTS:
default:
APP;
break;
@@ -426,58 +424,6 @@ repeat:
}
break;
- case ST_TABLE_1:
- goto repeat;
-
- case ST_TABLE_2:
- if (token == IDENT && yyleng == 1 && yytext[0] == 'X')
- {
- token = EXPORT_SYMBOL_KEYW;
- lexstate = ST_TABLE_5;
- APP;
- break;
- }
- lexstate = ST_TABLE_6;
- /* FALLTHRU */
-
- case ST_TABLE_6:
- switch (token)
- {
- case '{': case '[': case '(':
- ++count;
- break;
- case '}': case ']': case ')':
- --count;
- break;
- case ',':
- if (count == 0)
- lexstate = ST_TABLE_2;
- break;
- };
- goto repeat;
-
- case ST_TABLE_3:
- goto repeat;
-
- case ST_TABLE_4:
- if (token == ';')
- lexstate = ST_NORMAL;
- goto repeat;
-
- case ST_TABLE_5:
- switch (token)
- {
- case ',':
- token = ';';
- lexstate = ST_TABLE_2;
- APP;
- break;
- default:
- APP;
- break;
- }
- break;
-
default:
exit(1);
}
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 2c40e68853dd..8c19b82c6035 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -3,9 +3,6 @@
# Kernel configuration targets
# These targets are used from top-level makefile
-PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig \
- build_menuconfig build_nconfig build_gconfig build_xconfig
-
ifdef KBUILD_KCONFIG
Kconfig := $(KBUILD_KCONFIG)
else
@@ -19,29 +16,24 @@ endif
# We need this, in case the user has it in its environment
unexport CONFIG_
-xconfig: $(obj)/qconf
- $(Q)$< $(silent) $(Kconfig)
-
-gconfig: $(obj)/gconf
- $(Q)$< $(silent) $(Kconfig)
-
-menuconfig: $(obj)/mconf
- $(Q)$< $(silent) $(Kconfig)
-
-config: $(obj)/conf
- $(Q)$< $(silent) --oldaskconfig $(Kconfig)
-
-nconfig: $(obj)/nconf
- $(Q)$< $(silent) $(Kconfig)
-
-build_menuconfig: $(obj)/mconf
+config-prog := conf
+menuconfig-prog := mconf
+nconfig-prog := nconf
+gconfig-prog := gconf
+xconfig-prog := qconf
-build_nconfig: $(obj)/nconf
+define config_rule
+PHONY += $(1)
+$(1): $(obj)/$($(1)-prog)
+ $(Q)$$< $(silent) $(Kconfig)
-build_gconfig: $(obj)/gconf
+PHONY += build_$(1)
+build_$(1): $(obj)/$($(1)-prog)
+endef
-build_xconfig: $(obj)/qconf
+$(foreach c, config menuconfig nconfig gconfig xconfig, $(eval $(call config_rule,$(c))))
+PHONY += localmodconfig localyesconfig
localyesconfig localmodconfig: $(obj)/conf
$(Q)$(PERL) $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
$(Q)if [ -f .config ]; then \
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index db03e2f45de4..957d2a0832f7 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -84,8 +84,6 @@ static void xfgets(char *str, int size, FILE *in)
static int conf_askvalue(struct symbol *sym, const char *def)
{
- enum symbol_type type = sym_get_type(sym);
-
if (!sym_has_value(sym))
printf("(NEW) ");
@@ -107,24 +105,12 @@ static int conf_askvalue(struct symbol *sym, const char *def)
return 0;
}
/* fall through */
- case oldaskconfig:
+ default:
fflush(stdout);
xfgets(line, sizeof(line), stdin);
- return 1;
- default:
break;
}
- switch (type) {
- case S_INT:
- case S_HEX:
- case S_STRING:
- printf("%s\n", def);
- return 1;
- default:
- ;
- }
- printf("%s", line);
return 1;
}
@@ -137,7 +123,7 @@ static int conf_string(struct menu *menu)
printf("%*s%s ", indent - 1, "", menu->prompt->text);
printf("(%s) ", sym->name);
def = sym_get_string_value(sym);
- if (sym_get_string_value(sym))
+ if (def)
printf("[%s] ", def);
if (!conf_askvalue(sym, def))
return 0;
@@ -419,34 +405,37 @@ static void check_conf(struct menu *menu)
return;
sym = menu->sym;
- if (sym && !sym_has_value(sym)) {
- if (sym_is_changeable(sym) ||
- (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
- if (input_mode == listnewconfig) {
- if (sym->name) {
- const char *str;
-
- if (sym->type == S_STRING) {
- str = sym_get_string_value(sym);
- str = sym_escape_string_value(str);
- printf("%s%s=%s\n", CONFIG_, sym->name, str);
- free((void *)str);
- } else {
- str = sym_get_string_value(sym);
- printf("%s%s=%s\n", CONFIG_, sym->name, str);
- }
- }
- } else if (input_mode == helpnewconfig) {
- printf("-----\n");
- print_help(menu);
- printf("-----\n");
+ if (sym && !sym_has_value(sym) &&
+ (sym_is_changeable(sym) ||
+ (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
- } else {
- if (!conf_cnt++)
- printf("*\n* Restart config...\n*\n");
- rootEntry = menu_get_parent_menu(menu);
- conf(rootEntry);
+ switch (input_mode) {
+ case listnewconfig:
+ if (sym->name) {
+ const char *str;
+
+ if (sym->type == S_STRING) {
+ str = sym_get_string_value(sym);
+ str = sym_escape_string_value(str);
+ printf("%s%s=%s\n", CONFIG_, sym->name, str);
+ free((void *)str);
+ } else {
+ str = sym_get_string_value(sym);
+ printf("%s%s=%s\n", CONFIG_, sym->name, str);
+ }
}
+ break;
+ case helpnewconfig:
+ printf("-----\n");
+ print_help(menu);
+ printf("-----\n");
+ break;
+ default:
+ if (!conf_cnt++)
+ printf("*\n* Restart config...\n*\n");
+ rootEntry = menu_get_parent_menu(menu);
+ conf(rootEntry);
+ break;
}
}
@@ -494,6 +483,7 @@ static void conf_usage(const char *progname)
printf(" --randconfig New config with random answer to all options\n");
printf(" --yes2modconfig Change answers from yes to mod if possible\n");
printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
+ printf(" (If none of the above is given, --oldaskconfig is the default)\n");
}
int main(int ac, char **av)
@@ -505,7 +495,7 @@ int main(int ac, char **av)
tty_stdio = isatty(0) && isatty(1);
- while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
+ while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
if (opt == 's') {
conf_set_message_callback(NULL);
continue;
@@ -561,7 +551,7 @@ int main(int ac, char **av)
case yes2modconfig:
case mod2yesconfig:
break;
- case '?':
+ case 'h':
conf_usage(progname);
exit(1);
break;
diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh
index f2be0ff9a738..a463273509b5 100755
--- a/scripts/ld-version.sh
+++ b/scripts/ld-version.sh
@@ -1,11 +1,73 @@
-#!/usr/bin/awk -f
+#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
-# extract linker version number from stdin and turn into single number
- {
- gsub(".*\\)", "");
- gsub(".*version ", "");
- gsub("-.*", "");
- split($1,a, ".");
- print a[1]*100000000 + a[2]*1000000 + a[3]*10000;
- exit
- }
+#
+# Print the linker name and its version in a 5 or 6-digit form.
+# Also, perform the minimum version check.
+
+set -e
+
+# When you raise the minimum linker version, please update
+# Documentation/process/changes.rst as well.
+bfd_min_version=2.23.0
+lld_min_version=10.0.1
+
+# Convert the version string x.y.z to a canonical 5 or 6-digit form.
+get_canonical_version()
+{
+ IFS=.
+ set -- $1
+
+ # If the 2nd or 3rd field is missing, fill it with a zero.
+ #
+ # The 4th field, if present, is ignored.
+ # This occurs in development snapshots as in 2.35.1.20201116
+ echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
+}
+
+orig_args="$@"
+
+# Get the first line of the --version output.
+IFS='
+'
+set -- $("$@" --version)
+
+# Split the line on spaces.
+IFS=' '
+set -- $1
+
+if [ "$1" = GNU -a "$2" = ld ]; then
+ shift $(($# - 1))
+ version=$1
+ min_version=$bfd_min_version
+ name=BFD
+ disp_name="GNU ld"
+elif [ "$1" = GNU -a "$2" = gold ]; then
+ echo "gold linker is not supported as it is not capable of linking the kernel proper." >&2
+ exit 1
+elif [ "$1" = LLD ]; then
+ version=$2
+ min_version=$lld_min_version
+ name=LLD
+ disp_name=LLD
+else
+ echo "$orig_args: unknown linker" >&2
+ exit 1
+fi
+
+# Some distributions append a package release number, as in 2.34-4.fc32
+# Trim the hyphen and any characters that follow.
+version=${version%-*}
+
+cversion=$(get_canonical_version $version)
+min_cversion=$(get_canonical_version $min_version)
+
+if [ "$cversion" -lt "$min_cversion" ]; then
+ echo >&2 "***"
+ echo >&2 "*** Linker is too old."
+ echo >&2 "*** Your $disp_name version: $version"
+ echo >&2 "*** Minimum $disp_name version: $min_version"
+ echo >&2 "***"
+ exit 1
+fi
+
+echo $name $cversion
diff --git a/scripts/lld-version.sh b/scripts/lld-version.sh
deleted file mode 100755
index d70edb4d8a4f..000000000000
--- a/scripts/lld-version.sh
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# Usage: $ ./scripts/lld-version.sh ld.lld
-#
-# Print the linker version of `ld.lld' in a 5 or 6-digit form
-# such as `100001' for ld.lld 10.0.1 etc.
-
-linker_string="$($* --version)"
-
-if ! ( echo $linker_string | grep -q LLD ); then
- echo 0
- exit 1
-fi
-
-VERSION=$(echo $linker_string | cut -d ' ' -f 2)
-MAJOR=$(echo $VERSION | cut -d . -f 1)
-MINOR=$(echo $VERSION | cut -d . -f 2)
-PATCHLEVEL=$(echo $VERSION | cut -d . -f 3)
-printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
diff --git a/scripts/syscallhdr.sh b/scripts/syscallhdr.sh
new file mode 100755
index 000000000000..848ac2735115
--- /dev/null
+++ b/scripts/syscallhdr.sh
@@ -0,0 +1,98 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Generate a syscall number header.
+#
+# Each line of the syscall table should have the following format:
+#
+# NR ABI NAME [NATIVE] [COMPAT]
+#
+# NR syscall number
+# ABI ABI name
+# NAME syscall name
+# NATIVE native entry point (optional)
+# COMPAT compat entry point (optional)
+
+set -e
+
+usage() {
+ echo >&2 "usage: $0 [--abis ABIS] [--emit-nr] [--offset OFFSET] [--prefix PREFIX] INFILE OUTFILE" >&2
+ echo >&2
+ echo >&2 " INFILE input syscall table"
+ echo >&2 " OUTFILE output header file"
+ echo >&2
+ echo >&2 "options:"
+ echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
+ echo >&2 " --emit-nr Emit the macro of the number of syscalls (__NR_syscalls)"
+ echo >&2 " --offset OFFSET The offset of syscall numbers"
+ echo >&2 " --prefix PREFIX The prefix to the macro like __NR_<PREFIX><NAME>"
+ exit 1
+}
+
+# default unless specified by options
+abis=
+emit_nr=
+offset=
+prefix=
+
+while [ $# -gt 0 ]
+do
+ case $1 in
+ --abis)
+ abis=$(echo "($2)" | tr ',' '|')
+ shift 2;;
+ --emit-nr)
+ emit_nr=1
+ shift 1;;
+ --offset)
+ offset=$2
+ shift 2;;
+ --prefix)
+ prefix=$2
+ shift 2;;
+ -*)
+ echo "$1: unknown option" >&2
+ usage;;
+ *)
+ break;;
+ esac
+done
+
+if [ $# -ne 2 ]; then
+ usage
+fi
+
+infile="$1"
+outfile="$2"
+
+guard=_UAPI_ASM_$(basename "$outfile" |
+ sed -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g')
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+$abis" "$infile" | sort -n | {
+ echo "#ifndef $guard"
+ echo "#define $guard"
+ echo
+
+ max=0
+ while read nr abi name native compat ; do
+
+ max=$nr
+
+ if [ -n "$offset" ]; then
+ nr="($offset + $nr)"
+ fi
+
+ echo "#define __NR_$prefix$name $nr"
+ done
+
+ if [ -n "$emit_nr" ]; then
+ echo
+ echo "#ifdef __KERNEL__"
+ echo "#define __NR_${prefix}syscalls $(($max + 1))"
+ echo "#endif"
+ fi
+
+ echo
+ echo "#endif /* $guard */"
+} > "$outfile"
diff --git a/scripts/syscalltbl.sh b/scripts/syscalltbl.sh
new file mode 100755
index 000000000000..aa6ab156301c
--- /dev/null
+++ b/scripts/syscalltbl.sh
@@ -0,0 +1,73 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Generate a syscall table header.
+#
+# Each line of the syscall table should have the following format:
+#
+# NR ABI NAME [NATIVE] [COMPAT]
+#
+# NR syscall number
+# ABI ABI name
+# NAME syscall name
+# NATIVE native entry point (optional)
+# COMPAT compat entry point (optional)
+
+set -e
+
+usage() {
+ echo >&2 "usage: $0 [--abis ABIS] INFILE OUTFILE" >&2
+ echo >&2
+ echo >&2 " INFILE input syscall table"
+ echo >&2 " OUTFILE output header file"
+ echo >&2
+ echo >&2 "options:"
+ echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
+ exit 1
+}
+
+# default unless specified by options
+abis=
+
+while [ $# -gt 0 ]
+do
+ case $1 in
+ --abis)
+ abis=$(echo "($2)" | tr ',' '|')
+ shift 2;;
+ -*)
+ echo "$1: unknown option" >&2
+ usage;;
+ *)
+ break;;
+ esac
+done
+
+if [ $# -ne 2 ]; then
+ usage
+fi
+
+infile="$1"
+outfile="$2"
+
+nxt=0
+
+grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n | {
+
+ while read nr abi name native compat ; do
+
+ while [ $nxt -lt $nr ]; do
+ echo "__SYSCALL($nxt, sys_ni_syscall)"
+ nxt=$((nxt + 1))
+ done
+
+ if [ -n "$compat" ]; then
+ echo "__SYSCALL_WITH_COMPAT($nr, $native, $compat)"
+ elif [ -n "$native" ]; then
+ echo "__SYSCALL($nr, $native)"
+ else
+ echo "__SYSCALL($nr, sys_ni_syscall)"
+ fi
+ nxt=$((nr + 1))
+ done
+} > "$outfile"
diff --git a/scripts/test_dwarf5_support.sh b/scripts/test_dwarf5_support.sh
new file mode 100755
index 000000000000..c46e2456b47a
--- /dev/null
+++ b/scripts/test_dwarf5_support.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+# Test that the assembler doesn't need -Wa,-gdwarf-5 when presented with DWARF
+# v5 input, such as `.file 0` and `md5 0x00`. Should be fixed in GNU binutils
+# 2.35.2. https://sourceware.org/bugzilla/show_bug.cgi?id=25611
+echo '.file 0 "filename" md5 0x7a0b65214090b6693bd1dc24dd248245' | \
+ $* -gdwarf-5 -Wno-unused-command-line-argument -c -x assembler -o /dev/null -