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/frv/Makefile | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'arch/frv') 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 -- cgit v1.2.3