Thread (63 messages) 63 messages, 11 authors, 2017-11-09

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

From: Ard Biesheuvel <hidden>
Date: 2017-11-03 20:10:14
Also in: lkml

On 3 November 2017 at 17:11, Sami Tolvanen [off-list ref] 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 <redacted>
quoted hunk ↗ jump to hunk
---
 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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