On Thu, Apr 23, 2020 at 11:24 PM Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote: > > The result of '$(CC) --version | head -n 1' is already computed by the > top Makefile, and stored in the environment variable, CC_VERSION_TEXT. > > 'echo' is probably less expensive than the two commands $(CC) and > 'head' although this optimization is not noticeable level. > > Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> Applied to linux-kbuild. > --- > > Changes in v2: > - new patch > > init/Kconfig | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/init/Kconfig b/init/Kconfig > index 9e22ee8fbd75..5f797df3f043 100644 > --- a/init/Kconfig > +++ b/init/Kconfig > @@ -9,7 +9,7 @@ config DEFCONFIG_LIST > default "arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)" > > config CC_IS_GCC > - def_bool $(success,$(CC) --version | head -n 1 | grep -q gcc) > + def_bool $(success,echo "$(CC_VERSION_TEXT)" | grep -q gcc) > > config GCC_VERSION > int > @@ -21,7 +21,7 @@ config LD_VERSION > default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh) > > config CC_IS_CLANG > - def_bool $(success,$(CC) --version | head -n 1 | grep -q clang) > + def_bool $(success,echo "$(CC_VERSION_TEXT)" | grep -q clang) > > config CLANG_VERSION > int > -- > 2.25.1 > > -- > You received this message because you are subscribed to the Google Groups "Clang Built Linux" group. > To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-linux+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/20200423142354.312088-1-masahiroy%40kernel.org. -- Best Regards Masahiro Yamada
