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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/alpha | |
| 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/alpha')
| -rw-r--r-- | arch/alpha/Makefile | 2 | ||||
| -rw-r--r-- | arch/alpha/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/alpha/lib/Makefile | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile index 1b704ee54bf3..2f283b2fb164 100644 --- a/arch/alpha/Makefile +++ b/arch/alpha/Makefile | |||
| @@ -84,7 +84,7 @@ endif | |||
| 84 | # For TSUNAMI, we must have the assembler not emulate our instructions. | 84 | # For TSUNAMI, we must have the assembler not emulate our instructions. |
| 85 | # The same is true for IRONGATE, POLARIS, PYXIS. | 85 | # The same is true for IRONGATE, POLARIS, PYXIS. |
| 86 | # BWX is most important, but we don't really want any emulation ever. | 86 | # BWX is most important, but we don't really want any emulation ever. |
| 87 | CFLAGS += $(cflags-y) -Wa,-mev6 | 87 | KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6 |
| 88 | 88 | ||
| 89 | head-y := arch/alpha/kernel/head.o | 89 | head-y := arch/alpha/kernel/head.o |
| 90 | 90 | ||
diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile index ab6fa54b3860..dccf05245d4d 100644 --- a/arch/alpha/kernel/Makefile +++ b/arch/alpha/kernel/Makefile | |||
| @@ -3,7 +3,7 @@ | |||
| 3 | # | 3 | # |
| 4 | 4 | ||
| 5 | extra-y := head.o vmlinux.lds | 5 | extra-y := head.o vmlinux.lds |
| 6 | EXTRA_AFLAGS := $(CFLAGS) | 6 | EXTRA_AFLAGS := $(KBUILD_CFLAGS) |
| 7 | EXTRA_CFLAGS := -Werror -Wno-sign-compare | 7 | EXTRA_CFLAGS := -Werror -Wno-sign-compare |
| 8 | 8 | ||
| 9 | obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \ | 9 | obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \ |
diff --git a/arch/alpha/lib/Makefile b/arch/alpha/lib/Makefile index 266f78e13076..9b72c59c95be 100644 --- a/arch/alpha/lib/Makefile +++ b/arch/alpha/lib/Makefile | |||
| @@ -2,7 +2,7 @@ | |||
| 2 | # Makefile for alpha-specific library files.. | 2 | # Makefile for alpha-specific library files.. |
| 3 | # | 3 | # |
| 4 | 4 | ||
| 5 | EXTRA_AFLAGS := $(CFLAGS) | 5 | EXTRA_AFLAGS := $(KBUILD_CFLAGS) |
| 6 | EXTRA_CFLAGS := -Werror | 6 | EXTRA_CFLAGS := -Werror |
| 7 | 7 | ||
| 8 | # Many of these routines have implementations tuned for ev6. | 8 | # Many of these routines have implementations tuned for ev6. |