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authorSam Ravnborg <sam@neptun.(none)>2007-10-14 22:21:35 +0200
committerSam Ravnborg <sam@neptun.(none)>2007-10-14 22:21:35 +0200
commita0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch)
tree2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch/sparc64
parent9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff)
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 <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/Makefile6
1 files changed, 3 insertions, 3 deletions
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