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authorNick Desaulniers <nick.desaulniers@gmail.com>2017-05-08 20:29:46 -0700
committerIngo Molnar <mingo@kernel.org>2017-05-09 08:16:45 +0200
commit4a1bec4605838fd7872ec41677585e241e256785 (patch)
tree77cef3a06bb431c355375b79b4754dab6f83fe13 /arch/x86/Makefile
parentd2b6dc61a8dd3c429609b993778cb54e75a5c5f0 (diff)
x86/build: Don't add -maccumulate-outgoing-args w/o compiler support
Clang does not support this machine dependent option. Older versions of GCC (pre 3.0) may not support this option, added in 2000, but it's unlikely they can still compile a working kernel. Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170509032946.20444-1-nick.desaulniers@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/Makefile')
-rw-r--r--arch/x86/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4430dd489620..5851411e60fb 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -179,7 +179,8 @@ ifdef CONFIG_JUMP_LABEL
endif
ifeq ($(ACCUMULATE_OUTGOING_ARGS), 1)
- KBUILD_CFLAGS += -maccumulate-outgoing-args
+ # This compiler flag is not supported by Clang:
+ KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args,)
endif
# Stackpointer is addressed different for 32 bit and 64 bit x86