forked from luck/tmp_suning_uos_patched
a0f97e06a4
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>
36 lines
1004 B
Makefile
36 lines
1004 B
Makefile
#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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GZIP = gzip
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GZIP_FLAGS = -v9fc
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ifeq ($(BIG_ENDIAN),1)
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OBJCOPY_ARGS := -O elf32-xtensa-be
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else
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OBJCOPY_ARGS := -O elf32-xtensa-le
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endif
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LD_ARGS = -T $(srctree)/$(obj)/boot.ld
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boot-y := bootstrap.o
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OBJS := $(addprefix $(obj)/,$(boot-y))
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LIBS := arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
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LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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zImage: vmlinux $(OBJS) $(LIBS)
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$(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \
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vmlinux vmlinux.tmp
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gzip -vf9 vmlinux.tmp
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$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
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--add-section image=vmlinux.tmp.gz \
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--set-section-flags image=contents,alloc,load,load,data \
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$(OBJS) $@.tmp
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$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
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$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/$@.redboot
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rm -f $@.tmp $@.elf vmlinux.tmp.gz
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