linux-kernel - [Patch v3] x86/build: don't add -maccumulate-outgoing-args w/o compiler support

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Message-Id: <20170506030509.4435-1-nick.desaulniers@gmail.com>
Date:   Fri,  5 May 2017 20:05:09 -0700
From:   Nick Desaulniers <nick.desaulniers@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     nick.desaulniers@...il.com, jpoimboe@...hat.com,
        tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [Patch v3] 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 the kernel.

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

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 4430dd489620..5a0ac8411792 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
-- 
2.11.0