[PATCH] x86/build: don't add -maccumulate-outgoing-args w/o compiler support

[Nick Desaulniers]

Otherwise other compilers, like Clang, are prevented from compiling the
kernel. This flag was introduced in
3f135e57a4f76d24ae8d8a490314331f0ced40c5.

Signed-off-by: Nick Desaulniers <nick.desaulniers@xxxxxxxxx>
---
 arch/x86/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4430dd4..5a0ac84 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -179,7 +179,7 @@ ifdef CONFIG_JUMP_LABEL
 endif
 
 ifeq ($(ACCUMULATE_OUTGOING_ARGS), 1)
-	KBUILD_CFLAGS += -maccumulate-outgoing-args
+	KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args,)
 endif
 
 # Stackpointer is addressed different for 32 bit and 64 bit x86
-- 
2.9.3