Re: [PATCH] x86/boot: define CC_HAVE_ASM_GOTO

[Nick Desaulniers]

bumping for review.

On Fri, Sep 7, 2018 at 1:26 PM Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote:
>
> Since this file steamrolls KBUILD_CFLAGS, we have to redefine these
> symbols. This will prevent warnings in source files in this directory
> when Clang supports asm goto.
>
> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> ---
>  arch/x86/boot/compressed/Makefile | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
> index 28764dacf018..158c0b4e178a 100644
> --- a/arch/x86/boot/compressed/Makefile
> +++ b/arch/x86/boot/compressed/Makefile
> @@ -56,6 +56,13 @@ KBUILD_LDFLAGS += $(shell $(LD) --help 2>&1 | grep -q "\-z noreloc-overflow" \
>  endif
>  LDFLAGS_vmlinux := -T
>
> +# check for 'asm goto'
> +ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
> +  CC_HAVE_ASM_GOTO := 1
> +  KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
> +  KBUILD_AFLAGS += -DCC_HAVE_ASM_GOTO
> +endif
> +
>  hostprogs-y    := mkpiggy
>  HOST_EXTRACFLAGS += -I$(srctree)/tools/include
>
> --
> 2.19.0.rc2.392.g5ba43deb5a-goog
>


-- 
Thanks,
~Nick Desaulniers