This will be useful to describe the clang version dependency. Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> --- Changes in v4: None Changes in v3: None Changes in v2: None init/Kconfig | 7 +++++++ scripts/clang-version.sh | 18 ++++-------------- 2 files changed, 11 insertions(+), 14 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index c6ac856..3aeb37a 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -16,6 +16,13 @@ config GCC_VERSION default $(shell, $(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC default 0 +config CC_IS_CLANG + def_bool $(success, $(CC) --version | grep -q clang) + +config CLANG_VERSION + int + default $(shell, $(srctree)/scripts/clang-version.sh $(CC)) + config CONSTRUCTORS bool depends on !UML diff --git a/scripts/clang-version.sh b/scripts/clang-version.sh index 9780efa..dbf0a31 100755 --- a/scripts/clang-version.sh +++ b/scripts/clang-version.sh @@ -10,24 +10,14 @@ # clang-5.0.1 etc. # -if [ "$1" = "-p" ] ; then - with_patchlevel=1; - shift; -fi - compiler="$*" -if [ ${#compiler} -eq 0 ]; then - echo "Error: No compiler specified." - printf "Usage:\n\t$0 <clang-command>\n" +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__ | $compiler -E -x c - | tail -n 1) -if [ "x$with_patchlevel" != "x" ] ; then - PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1) - printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL -else - printf "%02d%02d\\n" $MAJOR $MINOR -fi +PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1) +printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html