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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/sh | |
| 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/sh')
| -rw-r--r-- | arch/sh/Makefile | 4 | ||||
| -rw-r--r-- | arch/sh/boot/compressed/Makefile | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/sh/Makefile b/arch/sh/Makefile index 97ac58682d0f..cd8a411acc95 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -91,12 +91,12 @@ LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4' LDFLAGS += -EB endif -CFLAGS += -pipe $(cflags-y) +KBUILD_CFLAGS += -pipe $(cflags-y) AFLAGS += $(cflags-y) head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) core-y += arch/sh/kernel/ arch/sh/mm/ core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/ diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile index 013504ae1122..906a13f82fe0 100644 --- a/arch/sh/boot/compressed/Makefile +++ b/arch/sh/boot/compressed/Makefile @@ -21,7 +21,7 @@ IMAGE_OFFSET := $(shell /bin/bash -c 'printf "0x%08x" \ $(CONFIG_MEMORY_START) + \ $(CONFIG_BOOT_LINK_OFFSET)]') -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds |