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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/s390 | |
| parent | 9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff) | |
| download | linux-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.gz linux-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.bz2 linux-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/s390')
| -rw-r--r-- | arch/s390/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 143ed8e154af..62a0da42c7fd 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -15,7 +15,7 @@ ifndef CONFIG_64BIT LDFLAGS := -m elf_s390 -CFLAGS += -m31 +KBUILD_CFLAGS += -m31 AFLAGS += -m31 UTS_MACHINE := s390 STACK_SIZE := 8192 @@ -23,7 +23,7 @@ CHECKFLAGS += -D__s390__ -msize-long else LDFLAGS := -m elf64_s390 MODFLAGS += -fpic -D__PIC__ -CFLAGS += -m64 +KBUILD_CFLAGS += -m64 AFLAGS += -m64 UTS_MACHINE := s390x STACK_SIZE := 16384 @@ -77,8 +77,8 @@ cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) endif -CFLAGS += -mbackchain -msoft-float $(cflags-y) -CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare +KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) +KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare AFLAGS += $(aflags-y) OBJCOPYFLAGS := -O binary |