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kconfig: add CC_IS_CLANG and CLANG_VERSION

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This will be useful to describe the clang version dependency.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Masahiro Yamada 2018-05-28 18:22:02 +09:00
parent a435389898
commit 469cb7376c
2 changed files with 11 additions and 14 deletions
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7
init/Kconfig
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@ -16,6 +16,13 @@ config GCC_VERSION
default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
default 0 default 0
config CC_IS_CLANG
def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
config CLANG_VERSION
int
default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
config CONSTRUCTORS config CONSTRUCTORS
bool bool
depends on !UML depends on !UML

18
scripts/clang-version.sh
View file

@ -10,24 +10,14 @@
# clang-5.0.1 etc. # clang-5.0.1 etc.
# #
if [ "$1" = "-p" ] ; then
with_patchlevel=1;
shift;
fi
compiler="$*" compiler="$*"
if [ ${#compiler} -eq 0 ]; then if !( $compiler --version | grep -q clang) ; then
echo "Error: No compiler specified." echo 0
printf "Usage:\n\t$0 <clang-command>\n"
exit 1 exit 1
fi fi
MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1) MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1)
MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1) MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1)
if [ "x$with_patchlevel" != "x" ] ; then PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1) printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
else
printf "%02d%02d\\n" $MAJOR $MINOR
fi