aboutsummaryrefslogtreecommitdiffstats
path: root/arch/xtensa
diff options
context:
space:
mode:
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/xtensa
parentkbuild: fix up CFLAGS usage (diff)
downloadlinux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.tar.xz
linux-dev-a0f97e06a43cf524e616f09e6af3398e1e9c1c5b.zip
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')
-rw-r--r--arch/xtensa/Makefile8
-rw-r--r--arch/xtensa/boot/boot-redboot/Makefile2
2 files changed, 4 insertions, 6 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)
export PLATFORM
# temporarily until string.h is fixed
-cflags-y += -ffreestanding
+KBUILD_CFLAGS += -ffreestanding
-cflags-y += -pipe -mlongcalls
-
-CFLAGS += $(cflags-y)
+KBUILD_CFLAGS += -pipe -mlongcalls
KBUILD_DEFCONFIG := iss_defconfig
@@ -56,7 +54,7 @@ endif
#
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
head-y := arch/xtensa/kernel/head.o
core-y += arch/xtensa/kernel/ arch/xtensa/mm/
diff --git a/arch/xtensa/boot/boot-redboot/Makefile b/arch/xtensa/boot/boot-redboot/Makefile
index f53262c2e1f3..74d15d08077b 100644
--- a/arch/xtensa/boot/boot-redboot/Makefile
+++ b/arch/xtensa/boot/boot-redboot/Makefile
@@ -19,7 +19,7 @@ boot-y := bootstrap.o
OBJS := $(addprefix $(obj)/,$(boot-y))
LIBS := arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
-LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
zImage: vmlinux $(OBJS) $(LIBS)
$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \