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x86/build: Don't add -maccumulate-outgoing-args w/o compiler support

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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