From a0f97e06a43cf524e616f09e6af3398e1e9c1c5b Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 14 Oct 2007 22:21:35 +0200 Subject: kbuild: enable 'make CFLAGS=...' to add additional options to CC The variable CFLAGS is a wellknown variable and the usage by kbuild may result in unexpected behaviour. On top of that several people over time has asked for a way to pass in additional flags to gcc. This patch replace use of CFLAGS with KBUILD_CFLAGS all over the tree and enabling one to use: make CFLAGS=... to specify additional gcc commandline options. One usecase is when trying to find gcc bugs but other use cases has been requested too. Patch was tested on following architectures: alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k Test was simple to do a defconfig build, apply the patch and check that nothing got rebuild. Signed-off-by: Sam Ravnborg --- arch/sparc64/Makefile | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sparc64') diff --git a/arch/sparc64/Makefile b/arch/sparc64/Makefile index cad10c5b83d3..b083dc458ce9 100644 --- a/arch/sparc64/Makefile +++ b/arch/sparc64/Makefile @@ -39,17 +39,17 @@ AS := $(AS) --undeclared-regs endif ifneq ($(NEW_GCC),y) - CFLAGS := $(CFLAGS) -pipe -mno-fpu -mtune=ultrasparc -mmedlow \ + KBUILD_CFLAGS += -pipe -mno-fpu -mtune=ultrasparc -mmedlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare else - CFLAGS := $(CFLAGS) -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ + KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \ $(CC_UNDECL) AFLAGS += -m64 -mcpu=ultrasparc $(CC_UNDECL) endif ifeq ($(CONFIG_MCOUNT),y) - CFLAGS := $(CFLAGS) -pg + KBUILD_CFLAGS += -pg endif head-y := arch/sparc64/kernel/head.o arch/sparc64/kernel/init_task.o -- cgit v1.2.3