Re: [PATCH 06/15] efi/libstub: disable clang LTO

[Ard Biesheuvel]

On 3 November 2017 at 17:11, Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote:
> With CONFIG_CLANG_LTO, we produce LLVM IR instead of object files. Since LTO
> is not really needed here and the Makefile assumes we produce an object file,
> disable LTO for libstub.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>

Acked-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>

> ---
>  drivers/firmware/efi/libstub/Makefile | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
> index 2371a92808be..5146eee677ce 100644
> --- a/drivers/firmware/efi/libstub/Makefile
> +++ b/drivers/firmware/efi/libstub/Makefile
> @@ -20,7 +20,8 @@ cflags-$(CONFIG_EFI_ARMSTUB)  += -I$(srctree)/scripts/dtc/libfdt
>  KBUILD_CFLAGS                  := $(cflags-y) -DDISABLE_BRANCH_PROFILING \
>                                    -D__NO_FORTIFY \
>                                    $(call cc-option,-ffreestanding) \
> -                                  $(call cc-option,-fno-stack-protector)
> +                                  $(call cc-option,-fno-stack-protector) \
> +                                  $(DISABLE_LTO)
>
>  GCOV_PROFILE                   := n
>  KASAN_SANITIZE                 := n
> --
> 2.15.0.403.gc27cc4dac6-goog
>
>
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