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authorSam Ravnborg <sam@neptun.(none)>2007-10-14 22:21:35 +0200
committerSam Ravnborg <sam@neptun.(none)>2007-10-14 22:21:35 +0200
commita0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch)
tree2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch/m32r
parentkbuild: fix up CFLAGS usage (diff)
downloadlinux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.xz
linux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.zip
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/m32r')
-rw-r--r--arch/m32r/Makefile6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/m32r/Makefile b/arch/m32r/Makefile
index 60e12f312654..c80618ab60ea 100644
--- a/arch/m32r/Makefile
+++ b/arch/m32r/Makefile
@@ -9,7 +9,7 @@ LDFLAGS :=
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
LDFLAGS_vmlinux :=
-CFLAGS += -pipe -fno-schedule-insns
+KBUILD_CFLAGS += -pipe -fno-schedule-insns
CFLAGS_KERNEL += -mmodel=medium
CFLAGS_MODULE += -mmodel=large
@@ -24,14 +24,14 @@ endif
cflags-$(CONFIG_ISA_M32R) += -DNO_FPU
aflags-$(CONFIG_ISA_M32R) += -DNO_FPU -O2 -Wa,-no-bitinst
-CFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(cflags-y)
AFLAGS += $(aflags-y)
CHECKFLAGS += -D__m32r__ -D__BIG_ENDIAN__=1
head-y := arch/m32r/kernel/head.o arch/m32r/kernel/init_task.o
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
libs-y += arch/m32r/lib/ $(LIBGCC)
core-y += arch/m32r/kernel/ \