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authorSam Ravnborg <sam@neptun.(none)>2007-10-14 16:21:35 -0400
committerSam Ravnborg <sam@neptun.(none)>2007-10-14 16:21:35 -0400
commita0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch)
tree2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch/xtensa/Makefile
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/xtensa/Makefile')
-rw-r--r--arch/xtensa/Makefile8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index acf05be24929..56685a883347 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -28,11 +28,9 @@ PLATFORM = $(platform-y)
28export PLATFORM 28export PLATFORM
29 29
30# temporarily until string.h is fixed 30# temporarily until string.h is fixed
31cflags-y += -ffreestanding 31KBUILD_CFLAGS += -ffreestanding
32 32
33cflags-y += -pipe -mlongcalls 33KBUILD_CFLAGS += -pipe -mlongcalls
34
35CFLAGS += $(cflags-y)
36 34
37KBUILD_DEFCONFIG := iss_defconfig 35KBUILD_DEFCONFIG := iss_defconfig
38 36
@@ -56,7 +54,7 @@ endif
56 54
57# 55#
58 56
59LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) 57LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
60 58
61head-y := arch/xtensa/kernel/head.o 59head-y := arch/xtensa/kernel/head.o
62core-y += arch/xtensa/kernel/ arch/xtensa/mm/ 60core-y += arch/xtensa/kernel/ arch/xtensa/mm/