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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/ppc/Makefile | |
| parent | 9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff) | |
| download | op-kernel-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.zip op-kernel-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.gz | |
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/ppc/Makefile')
| -rw-r--r-- | arch/ppc/Makefile | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile index eee6264..43802e9 100644 --- a/arch/ppc/Makefile +++ b/arch/ppc/Makefile @@ -24,20 +24,20 @@ LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic # The -Iarch/$(ARCH)/include is temporary while we are merging CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include AFLAGS += -Iarch/$(ARCH) -CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \ +KBUILD_CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \ -ffixed-r2 -mmultiple # No AltiVec instruction when building kernel -CFLAGS += $(call cc-option, -mno-altivec) +KBUILD_CFLAGS += $(call cc-option, -mno-altivec) -CPP = $(CC) -E $(CFLAGS) +CPP = $(CC) -E $(KBUILD_CFLAGS) # Temporary hack until we have migrated to asm-powerpc LINUXINCLUDE += -Iarch/$(ARCH)/include CHECKFLAGS += -D__powerpc__ ifndef CONFIG_FSL_BOOKE -CFLAGS += -mstring +KBUILD_CFLAGS += -mstring endif cpu-as-$(CONFIG_4xx) += -Wa,-m405 @@ -46,7 +46,7 @@ cpu-as-$(CONFIG_E500) += -Wa,-me500 cpu-as-$(CONFIG_E200) += -Wa,-me200 AFLAGS += $(cpu-as-y) -CFLAGS += $(cpu-as-y) +KBUILD_CFLAGS += $(cpu-as-y) # Default to the common case. KBUILD_DEFCONFIG := common_defconfig |
