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| author | Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 16:21:35 -0400 |
|---|---|---|
| committer | Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 16:21:35 -0400 |
| 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' | |||
| 91 | LDFLAGS += -EB | 91 | LDFLAGS += -EB |
| 92 | endif | 92 | endif |
| 93 | 93 | ||
| 94 | CFLAGS += -pipe $(cflags-y) | 94 | KBUILD_CFLAGS += -pipe $(cflags-y) |
| 95 | AFLAGS += $(cflags-y) | 95 | AFLAGS += $(cflags-y) |
| 96 | 96 | ||
| 97 | head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o | 97 | head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o |
| 98 | 98 | ||
| 99 | LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) | 99 | LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) |
| 100 | 100 | ||
| 101 | core-y += arch/sh/kernel/ arch/sh/mm/ | 101 | core-y += arch/sh/kernel/ arch/sh/mm/ |
| 102 | core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/ | 102 | 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" \ | |||
| 21 | $(CONFIG_MEMORY_START) + \ | 21 | $(CONFIG_MEMORY_START) + \ |
| 22 | $(CONFIG_BOOT_LINK_OFFSET)]') | 22 | $(CONFIG_BOOT_LINK_OFFSET)]') |
| 23 | 23 | ||
| 24 | LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) | 24 | LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) |
| 25 | 25 | ||
| 26 | LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds | 26 | LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds |
| 27 | 27 | ||