Commit 4a1bec46 authored by Nick Desaulniers's avatar Nick Desaulniers Committed by Ingo Molnar
Browse files

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: default avatarNick Desaulniers <nick.desaulniers@gmail.com>
Reviewed-by: default avatarJosh 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: default avatarIngo Molnar <mingo@kernel.org>
parent d2b6dc61

arch/x86/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -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