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Rodriguez" , Randy Dunlap , Ulf Magnusson , Sam Ravnborg , Linus Torvalds , Masahiro Yamada Subject: [PATCH v5 25/31] kconfig: add CC_IS_CLANG and CLANG_VERSION Date: Mon, 28 May 2018 18:22:02 +0900 Message-Id: <1527499328-13213-26-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1527499328-13213-1-git-send-email-yamada.masahiro@socionext.com> References: <1527499328-13213-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This will be useful to describe the clang version dependency. Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook --- Changes in v5: None 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(-) -- 2.7.4 diff --git a/init/Kconfig b/init/Kconfig index 2e33d93..22e095d 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 \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