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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/sh
parent9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff)
downloadop-kernel-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.zip
op-kernel-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.gz
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/Makefile4
-rw-r--r--arch/sh/boot/compressed/Makefile2
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 97ac586..cd8a411 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -91,12 +91,12 @@ LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4'
LDFLAGS += -EB
endif
-CFLAGS += -pipe $(cflags-y)
+KBUILD_CFLAGS += -pipe $(cflags-y)
AFLAGS += $(cflags-y)
head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
core-y += arch/sh/kernel/ arch/sh/mm/
core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/
diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
index 013504a..906a13f 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" \
$(CONFIG_MEMORY_START) + \
$(CONFIG_BOOT_LINK_OFFSET)]')
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds
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