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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/m68k/Makefile | |
| parent | 9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff) | |
| download | lwn-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.gz lwn-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/m68k/Makefile')
| -rw-r--r-- | arch/m68k/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index aa383a5ea7ac..4a1bd44ff162 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -32,18 +32,18 @@ endif CHECKFLAGS += -D__mc68000__ # without -fno-strength-reduce the 53c7xx.c driver fails ;-( -CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 +KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 # enable processor switch if compiled only for a single cpu ifndef CONFIG_M68020 ifndef CONFIG_M68030 ifndef CONFIG_M68060 -CFLAGS := $(CFLAGS) -m68040 +KBUILD_CFLAGS += -m68040 endif ifndef CONFIG_M68040 -CFLAGS := $(CFLAGS) -m68060 +KBUILD_CFLAGS += -m68060 endif endif @@ -52,7 +52,7 @@ endif ifdef CONFIG_KGDB # If configured for kgdb support, include debugging infos and keep the # frame pointer -CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS)) -g +KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g endif ifndef CONFIG_SUN3 |