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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/frv/Makefile | |
| 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/frv/Makefile')
| -rw-r--r-- | arch/frv/Makefile | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/frv/Makefile b/arch/frv/Makefile index 9bf7345c5cc..ec89886ed45 100644 --- a/arch/frv/Makefile +++ b/arch/frv/Makefile @@ -39,13 +39,13 @@ endif ARCHMODFLAGS += -G0 -mlong-calls ifdef CONFIG_GPREL_DATA_8 -CFLAGS += -G8 +KBUILD_CFLAGS += -G8 else ifdef CONFIG_GPREL_DATA_4 -CFLAGS += -G4 +KBUILD_CFLAGS += -G4 else ifdef CONFIG_GPREL_DATA_NONE -CFLAGS += -G0 +KBUILD_CFLAGS += -G0 endif endif endif @@ -53,25 +53,25 @@ endif #LDFLAGS_vmlinux := -Map linkmap.txt ifdef CONFIG_GC_SECTIONS -CFLAGS += -ffunction-sections -fdata-sections +KBUILD_CFLAGS += -ffunction-sections -fdata-sections LINKFLAGS += --gc-sections endif ifndef CONFIG_FRAME_POINTER -CFLAGS += -mno-linked-fp +KBUILD_CFLAGS += -mno-linked-fp endif ifdef CONFIG_CPU_FR451_COMPILE -CFLAGS += -mcpu=fr450 +KBUILD_CFLAGS += -mcpu=fr450 AFLAGS += -mcpu=fr450 ASFLAGS += -mcpu=fr450 else ifdef CONFIG_CPU_FR551_COMPILE -CFLAGS += -mcpu=fr550 +KBUILD_CFLAGS += -mcpu=fr550 AFLAGS += -mcpu=fr550 ASFLAGS += -mcpu=fr550 else -CFLAGS += -mcpu=fr400 +KBUILD_CFLAGS += -mcpu=fr400 AFLAGS += -mcpu=fr400 ASFLAGS += -mcpu=fr400 endif @@ -80,15 +80,15 @@ endif # pretend the kernel is going to run on an FR400 with no media-fp unit # - reserve CC3 for use with atomic ops # - all the extra registers are dealt with only at context switch time -CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media -CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2 +KBUILD_CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media +KBUILD_CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2 AFLAGS += -mno-fdpic ASFLAGS += -mno-fdpic # make sure the .S files get compiled with debug info # and disable optimisations that are unhelpful whilst debugging ifdef CONFIG_DEBUG_INFO -#CFLAGS += -O1 +#KBUILD_CFLAGS += -O1 AFLAGS += -Wa,--gdwarf2 ASFLAGS += -Wa,--gdwarf2 endif |