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From: Ram Pai <linuxram@us.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org
Subject: [PATCH 1/1] powerpc: crtsaveres.o needed only when -Os flag is enabled
Date: Mon, 28 Apr 2014 17:05:08 -0700
Message-Id: <1398729908-15787-1-git-send-email-linuxram@us.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>, linuxppc-dev@lists.ozlabs.org,
 hartb@us.ibm.com, anton@samba.org, tony@ozlabs.au.ibm.com
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    powerpc: crtsaveres.o needed only when -Os flag is enabled
    
    Currently on powerpc arch, out-of-tree module fails to build without
    crtsaveres.o, even when the module has no dependency on the symbols
    provided by the file; when built without the -Os flag.
    
    BTW: '-Os' flag is enabled when CONFIG_CC_OPTIMIZE_FOR_SIZE is
    configured.
    
    This patch fixes that problem.
    
Signed-off-by: Ram Pai <linuxram@us.ibm.com>

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 4c0cedf..cf12f38 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -157,7 +157,10 @@ CPP		= $(CC) -E $(KBUILD_CFLAGS)
 
 CHECKFLAGS	+= -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
 
+ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
+endif
+
 
 # No AltiVec or VSX instructions when building kernel
 KBUILD_CFLAGS += $(call cc-option,-mno-altivec)