From a0f97e06a43cf524e616f09e6af3398e1e9c1c5b Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 14 Oct 2007 22:21:35 +0200 Subject: 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 --- arch/m32r/Makefile | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/m32r') 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/ \ -- cgit v1.2.3-59-g8ed1b