diff options
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | arch/Kconfig | 3 | ||||
| -rw-r--r-- | include/linux/compiler-version.h | 14 | ||||
| -rw-r--r-- | include/linux/kconfig.h | 2 | ||||
| -rw-r--r-- | init/Kconfig | 8 | ||||
| -rw-r--r-- | scripts/Makefile.lib | 4 | ||||
| -rwxr-xr-x | scripts/dummy-tools/gcc | 18 | ||||
| -rw-r--r-- | scripts/gcc-plugins/Makefile | 1 | ||||
| -rwxr-xr-x | scripts/ld-version.sh | 22 |
9 files changed, 55 insertions, 21 deletions
@@ -264,7 +264,8 @@ no-dot-config-targets := $(clean-targets) \ $(version_h) headers headers_% archheaders archscripts \ %asm-generic kernelversion %src-pkg dt_binding_check \ outputmakefile -no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease +no-sync-config-targets := $(no-dot-config-targets) %install kernelrelease \ + image_name single-targets := %.a %.i %.ko %.lds %.ll %.lst %.mod %.o %.s %.symtypes %/ config-build := @@ -478,6 +479,7 @@ USERINCLUDE := \ -I$(objtree)/arch/$(SRCARCH)/include/generated/uapi \ -I$(srctree)/include/uapi \ -I$(objtree)/include/generated/uapi \ + -include $(srctree)/include/linux/compiler-version.h \ -include $(srctree)/include/linux/kconfig.h # Use LINUXINCLUDE when you must reference the include/ directory. diff --git a/arch/Kconfig b/arch/Kconfig index 2bb30673d8e6..ecfd3520b676 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -632,13 +632,12 @@ config HAS_LTO_CLANG def_bool y # Clang >= 11: https://github.com/ClangBuiltLinux/linux/issues/510 depends on CC_IS_CLANG && CLANG_VERSION >= 110000 && LD_IS_LLD - depends on $(success,test $(LLVM) -eq 1) depends on $(success,test $(LLVM_IAS) -eq 1) depends on $(success,$(NM) --help | head -n 1 | grep -qi llvm) depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm) depends on ARCH_SUPPORTS_LTO_CLANG depends on !FTRACE_MCOUNT_USE_RECORDMCOUNT - depends on !KASAN + depends on !KASAN || KASAN_HW_TAGS depends on !GCOV_KERNEL help The compiler and Kconfig options support building with Clang's diff --git a/include/linux/compiler-version.h b/include/linux/compiler-version.h new file mode 100644 index 000000000000..2b2972c77c62 --- /dev/null +++ b/include/linux/compiler-version.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifdef __LINUX_COMPILER_VERSION_H +#error "Please do not include <linux/compiler-version.h>. This is done by the build system." +#endif +#define __LINUX_COMPILER_VERSION_H + +/* + * This header exists to force full rebuild when the compiler is upgraded. + * + * When fixdep scans this, it will find this string "CONFIG_CC_VERSION_TEXT" + * and add dependency on include/config/cc/version/text.h, which is touched + * by Kconfig when the version string from the compiler changes. + */ diff --git a/include/linux/kconfig.h b/include/linux/kconfig.h index e78e17a76dc9..24a59cb06963 100644 --- a/include/linux/kconfig.h +++ b/include/linux/kconfig.h @@ -2,8 +2,6 @@ #ifndef __LINUX_KCONFIG_H #define __LINUX_KCONFIG_H -/* CONFIG_CC_VERSION_TEXT (Do not delete this comment. See help in Kconfig) */ - #include <generated/autoconf.h> #ifdef CONFIG_CPU_BIG_ENDIAN diff --git a/init/Kconfig b/init/Kconfig index 22946fe5ded9..30c849094c28 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -20,10 +20,10 @@ config CC_VERSION_TEXT When the compiler is updated, Kconfig will be invoked. - Ensure full rebuild when the compiler is updated - include/linux/kconfig.h contains this option in the comment line so - fixdep adds include/config/cc/version/text.h into the auto-generated - dependency. When the compiler is updated, syncconfig will touch it - and then every file will be rebuilt. + include/linux/compiler-version.h contains this option in the comment + line so fixdep adds include/config/cc/version/text.h into the + auto-generated dependency. When the compiler is updated, syncconfig + will touch it and then every file will be rebuilt. config CC_IS_GCC def_bool $(success,test "$(cc-name)" = GCC) diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index eee59184de64..8cd67b1b6d15 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -327,7 +327,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE quiet_cmd_dtc = DTC $@ cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ - $(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \ + $(DTC) -o $@ -b 0 \ $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ -d $(depfile).dtc.tmp $(dtc-tmp) ; \ cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) @@ -352,7 +352,7 @@ define rule_dtc endef $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE - $(call if_changed_rule,dtc,yaml) + $(call if_changed_rule,dtc) dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc index 5c113cad5601..39e65fee59bd 100755 --- a/scripts/dummy-tools/gcc +++ b/scripts/dummy-tools/gcc @@ -57,9 +57,9 @@ if arg_contain --version "$@"; then fi if arg_contain -E "$@"; then - # For scripts/gcc-version.sh; This emulates GCC 20.0.0 + # For scripts/cc-version.sh; This emulates GCC 20.0.0 if arg_contain - "$@"; then - sed 's/^__GNUC__$/20/; s/^__GNUC_MINOR__$/0/; s/^__GNUC_PATCHLEVEL__$/0/' + sed -n '/^GCC/{s/__GNUC__/20/; s/__GNUC_MINOR__/0/; s/__GNUC_PATCHLEVEL__/0/; p;}' exit 0 else echo "no input files" >&2 @@ -73,6 +73,15 @@ if arg_contain -S "$@"; then echo "%gs" exit 0 fi + + # For arch/powerpc/tools/gcc-check-mprofile-kernel.sh + if arg_contain -m64 "$@" && arg_contain -mlittle-endian "$@" && + arg_contain -mprofile-kernel "$@"; then + if ! test -t 0 && ! grep -q notrace; then + echo "_mcount" + fi + exit 0 + fi fi # To set GCC_PLUGINS @@ -85,3 +94,8 @@ if arg_contain -print-file-name=plugin "$@"; then echo $plugin_dir exit 0 fi + +# inverted return value +if arg_contain -D__SIZEOF_INT128__=0 "$@"; then + exit 1 +fi diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile index b5487cce69e8..1952d3bb80c6 100644 --- a/scripts/gcc-plugins/Makefile +++ b/scripts/gcc-plugins/Makefile @@ -22,6 +22,7 @@ always-y += $(GCC_PLUGIN) GCC_PLUGINS_DIR = $(shell $(CC) -print-file-name=plugin) plugin_cxxflags = -Wp,-MMD,$(depfile) $(KBUILD_HOSTCXXFLAGS) -fPIC \ + -include $(srctree)/include/linux/compiler-version.h \ -I $(GCC_PLUGINS_DIR)/include -I $(obj) -std=gnu++11 \ -fno-rtti -fno-exceptions -fasynchronous-unwind-tables \ -ggdb -Wno-narrowing -Wno-unused-variable \ diff --git a/scripts/ld-version.sh b/scripts/ld-version.sh index a463273509b5..1bf3aadde9de 100755 --- a/scripts/ld-version.sh +++ b/scripts/ld-version.sh @@ -29,7 +29,7 @@ orig_args="$@" # Get the first line of the --version output. IFS=' ' -set -- $("$@" --version) +set -- $(LC_ALL=C "$@" --version) # Split the line on spaces. IFS=' ' @@ -44,14 +44,20 @@ if [ "$1" = GNU -a "$2" = ld ]; then 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 + while [ $# -gt 1 -a "$1" != "LLD" ]; do + shift + done + + if [ "$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 fi # Some distributions append a package release number, as in 2.34-4.fc32 |