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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/x86/boot/Makefile | |
| parent | 9a39e273d4df0560c724c5fe71f6314a0583ca2b (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/x86/boot/Makefile')
| -rw-r--r-- | arch/x86/boot/Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index cb1035f2b7e..646292aaf1f 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -50,7 +50,7 @@ HOSTCFLAGS_build.o := $(LINUXINCLUDE) # that way we can complain to the user if the CPU is insufficient. cflags-i386 := cflags-x86_64 := -m32 -CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ +KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ $(cflags-$(ARCH)) \ -Wall -Wstrict-prototypes \ -march=i386 -mregparm=3 \ @@ -61,7 +61,7 @@ CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ $(call cc-option, -fno-unit-at-a-time)) \ $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) -AFLAGS := $(CFLAGS) -D__ASSEMBLY__ +AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ $(obj)/zImage: IMAGE_OFFSET := 0x1000 $(obj)/zImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) |