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

Message ID 20171103171203.107569-7-samitolvanen@google.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sami Tolvanen Nov. 3, 2017, 5:11 p.m. UTC
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@google.com>
---
 drivers/firmware/efi/libstub/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Ard Biesheuvel Nov. 3, 2017, 8:10 p.m. UTC | #1
On 3 November 2017 at 17:11, Sami Tolvanen <samitolvanen@google.com> 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@google.com>

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

> ---
>  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
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff mbox

Patch

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