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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>
This commit is contained in:
Nick Desaulniers 2017-05-08 20:29:46 -07:00 committed by Ingo Molnar
parent d2b6dc61a8
commit 4a1bec4605
1 changed files with 2 additions and 1 deletions
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3
arch/x86/Makefile
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@ -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