From 06c5040cdb13d27adad118f2fbfae905a1911b37 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@neptun.(none)>
Date: Mon, 15 Oct 2007 22:17:25 +0200
Subject: kbuild: enable 'make CPPFLAGS=...' to add additional options to CPP

The variable CPPFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.

This patch replace use of CPPFLAGS with KBUILD_CPPFLAGS all over the
tree and enabling one to use:
make CPPFLAGS=...
to specify additional CPP commandline options.

Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k, s390

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 arch/ppc/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/ppc')

diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile
index dd63ccb6673..95894ef7bea 100644
--- a/arch/ppc/Makefile
+++ b/arch/ppc/Makefile
@@ -22,7 +22,7 @@ endif
 
 LDFLAGS_vmlinux	:= -Ttext $(KERNELLOAD) -Bstatic
 # The -Iarch/$(ARCH)/include is temporary while we are merging
-CPPFLAGS	+= -Iarch/$(ARCH) -Iarch/$(ARCH)/include
+KBUILD_CPPFLAGS	+= -Iarch/$(ARCH) -Iarch/$(ARCH)/include
 KBUILD_AFLAGS	+= -Iarch/$(ARCH)
 KBUILD_CFLAGS	+= -Iarch/$(ARCH) -msoft-float -pipe \
 		-ffixed-r2 -mmultiple
-- 
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