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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/frv
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/frv')
-rw-r--r--arch/frv/Makefile22
1 files changed, 11 insertions, 11 deletions
diff --git a/arch/frv/Makefile b/arch/frv/Makefile
index 9bf7345..ec89886 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
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