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[2/5] efi/libstub/arm: add support for building with clang

Message ID 20180320230206.25289-3-stefan@agner.ch (mailing list archive)
State New, archived
Headers show

Commit Message

Stefan Agner March 20, 2018, 11:02 p.m. UTC 
Use cc-options call for -mno-single-pic-base since the option is
not available in clang. LLVM/clang always assumes a fixed
displacement between text/data and hence uses PC relative
addressing.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 drivers/firmware/efi/libstub/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index 7b3ba40f0745..2bf69cca0d87 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -13,7 +13,8 @@  cflags-$(CONFIG_X86)		+= -m$(BITS) -D__KERNEL__ -O2 \
 
 cflags-$(CONFIG_ARM64)		:= $(subst -pg,,$(KBUILD_CFLAGS)) -fpie
 cflags-$(CONFIG_ARM)		:= $(subst -pg,,$(KBUILD_CFLAGS)) \
-				   -fno-builtin -fpic -mno-single-pic-base
+				   -fno-builtin -fpic \
+				   $(call cc-option,-mno-single-pic-base,)
 
 cflags-$(CONFIG_EFI_ARMSTUB)	+= -I$(srctree)/scripts/dtc/libfdt