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| author |   Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 22:21:35 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 22:21:35 +0200 |
| commit | a0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch) | |
| tree | 2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch/sparc64 | |
| parent | kbuild: fix up CFLAGS usage (diff) | |
| download | linux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.xz linux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.zip | |
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/Makefile | 6 |
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 |