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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/x86/boot/compressed
parent9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff)
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/x86/boot/compressed')
-rw-r--r--arch/x86/boot/compressed/Makefile_322
-rw-r--r--arch/x86/boot/compressed/Makefile_644
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/boot/compressed/Makefile_32 b/arch/x86/boot/compressed/Makefile_32
index 22613c652d2..e43ff7c56e6 100644
--- a/arch/x86/boot/compressed/Makefile_32
+++ b/arch/x86/boot/compressed/Makefile_32
@@ -11,7 +11,7 @@ EXTRA_AFLAGS := -traditional
LDFLAGS_vmlinux := -T
hostprogs-y := relocs
-CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \
+KBUILD_CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \
-fno-strict-aliasing -fPIC \
$(call cc-option,-ffreestanding) \
$(call cc-option,-fno-stack-protector)
diff --git a/arch/x86/boot/compressed/Makefile_64 b/arch/x86/boot/compressed/Makefile_64
index dc6b3380cc4..3013ad01fe6 100644
--- a/arch/x86/boot/compressed/Makefile_64
+++ b/arch/x86/boot/compressed/Makefile_64
@@ -6,11 +6,11 @@
targets := vmlinux vmlinux.bin vmlinux.bin.gz head_64.o misc_64.o piggy.o
-CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \
+KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \
-fno-strict-aliasing -fPIC -mcmodel=small \
$(call cc-option, -ffreestanding) \
$(call cc-option, -fno-stack-protector)
-AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
LDFLAGS := -m elf_x86_64
LDFLAGS_vmlinux := -T