diff options
author | Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 16:21:35 -0400 |
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committer | Sam Ravnborg <sam@neptun.(none)> | 2007-10-14 16:21:35 -0400 |
commit | a0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch) | |
tree | 2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch/v850 | |
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/v850')
-rw-r--r-- | arch/v850/Makefile | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/v850/Makefile b/arch/v850/Makefile index 8be9aacb20a7..8b629df0029a 100644 --- a/arch/v850/Makefile +++ b/arch/v850/Makefile | |||
@@ -16,11 +16,11 @@ | |||
16 | 16 | ||
17 | arch_dir = arch/v850 | 17 | arch_dir = arch/v850 |
18 | 18 | ||
19 | CFLAGS += -mv850e | 19 | KBUILD_CFLAGS += -mv850e |
20 | # r16 is a fixed pointer to the current task | 20 | # r16 is a fixed pointer to the current task |
21 | CFLAGS += -ffixed-r16 -mno-prolog-function | 21 | KBUILD_CFLAGS += -ffixed-r16 -mno-prolog-function |
22 | CFLAGS += -fno-builtin | 22 | KBUILD_CFLAGS += -fno-builtin |
23 | CFLAGS += -D__linux__ -DUTS_SYSNAME=\"uClinux\" | 23 | KBUILD_CFLAGS += -D__linux__ -DUTS_SYSNAME=\"uClinux\" |
24 | 24 | ||
25 | # By default, build a kernel that runs on the gdb v850 simulator. | 25 | # By default, build a kernel that runs on the gdb v850 simulator. |
26 | KBUILD_DEFCONFIG := sim_defconfig | 26 | KBUILD_DEFCONFIG := sim_defconfig |