kconfig: add CC_IS_CLANG and CLANG_VERSION
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>
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@ -16,6 +16,13 @@ config GCC_VERSION
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default $(shell,$(srctree)/scripts/gcc-version.sh -p $(CC) | sed 's/^0*//') if CC_IS_GCC
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default 0
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config CC_IS_CLANG
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def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
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config CLANG_VERSION
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int
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default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
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config CONSTRUCTORS
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bool
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depends on !UML
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@ -10,24 +10,14 @@
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# clang-5.0.1 etc.
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#
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if [ "$1" = "-p" ] ; then
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with_patchlevel=1;
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shift;
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fi
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compiler="$*"
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if [ ${#compiler} -eq 0 ]; then
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echo "Error: No compiler specified."
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printf "Usage:\n\t$0 <clang-command>\n"
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if !( $compiler --version | grep -q clang) ; then
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echo 0
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exit 1
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fi
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MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1)
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MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1)
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if [ "x$with_patchlevel" != "x" ] ; then
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PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
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printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
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else
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printf "%02d%02d\\n" $MAJOR $MINOR
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fi
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PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
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printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
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