diff options
| author | Kees Cook <keescook@chromium.org> | 2020-04-02 01:18:37 -0700 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2020-04-09 00:13:45 +0900 |
| commit | 4dcc9a88448a65a1e855228917cfbb92ac4b4f45 (patch) | |
| tree | 0aeaf77d289824565442a1c352e6dc0c5624fdf3 | |
| parent | 60969f02f07ae1445730c7b293c421d179da729c (diff) | |
kbuild: mkcompile_h: Include $LD version in /proc/version
When doing Clang builds of the kernel, it is possible to link with
either ld.bfd (binutils) or ld.lld (LLVM), but it is not possible to
discover this from a running kernel. Add the "$LD -v" output to
/proc/version.
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| -rw-r--r-- | init/Makefile | 2 | ||||
| -rwxr-xr-x | scripts/mkcompile_h | 6 |
2 files changed, 6 insertions, 2 deletions
diff --git a/init/Makefile b/init/Makefile index 6246a06364d0..30aa8ab11120 100644 --- a/init/Makefile +++ b/init/Makefile @@ -35,4 +35,4 @@ include/generated/compile.h: FORCE @$($(quiet)chk_compile.h) $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkcompile_h $@ \ "$(UTS_MACHINE)" "$(CONFIG_SMP)" "$(CONFIG_PREEMPT)" \ - "$(CONFIG_PREEMPT_RT)" "$(CC) $(KBUILD_CFLAGS)" + "$(CONFIG_PREEMPT_RT)" "$(CC) $(KBUILD_CFLAGS)" "$(LD)" diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index 3ff26e5b2eac..5b80a4699740 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -7,6 +7,7 @@ SMP=$3 PREEMPT=$4 PREEMPT_RT=$5 CC=$6 +LD=$7 vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; } @@ -61,7 +62,10 @@ UTS_VERSION="$(echo $UTS_VERSION $CONFIG_FLAGS $TIMESTAMP | cut -b -$UTS_LEN)" printf '#define LINUX_COMPILE_BY "%s"\n' "$LINUX_COMPILE_BY" echo \#define LINUX_COMPILE_HOST \"$LINUX_COMPILE_HOST\" - echo \#define LINUX_COMPILER \"`$CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//'`\" + CC_VERSION=$($CC -v 2>&1 | grep ' version ' | sed 's/[[:space:]]*$//') + LD_VERSION=$($LD -v | head -n1 | sed 's/(compatible with [^)]*)//' \ + | sed 's/[[:space:]]*$//') + printf '#define LINUX_COMPILER "%s"\n' "$CC_VERSION, $LD_VERSION" } > .tmpcompile # Only replace the real compile.h if the new one is different, |