62 lines
1.8 KiB
Makefile
62 lines
1.8 KiB
Makefile
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#
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# linux/arch/x86/boot/compressed/Makefile
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#
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# create a compressed vmlinux image from the original vmlinux
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#
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targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
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KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
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KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
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KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
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cflags-$(CONFIG_X86_64) := -mcmodel=small
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KBUILD_CFLAGS += $(cflags-y)
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KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
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KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
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KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
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GCOV_PROFILE := n
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LDFLAGS := -m elf_$(UTS_MACHINE)
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LDFLAGS_vmlinux := -T
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hostprogs-y := mkpiggy
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
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$(call if_changed,ld)
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@:
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OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
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$(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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targets += vmlinux.bin.all vmlinux.relocs relocs
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hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
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quiet_cmd_relocs = RELOCS $@
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cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
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$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
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$(call if_changed,relocs)
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vmlinux.bin.all-y := $(obj)/vmlinux.bin
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vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
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$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
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$(call if_changed,lzma)
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suffix-$(CONFIG_KERNEL_GZIP) := gz
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suffix-$(CONFIG_KERNEL_BZIP2) := bz2
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suffix-$(CONFIG_KERNEL_LZMA) := lzma
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quiet_cmd_mkpiggy = MKPIGGY $@
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cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
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targets += piggy.S
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$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
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$(call if_changed,mkpiggy)
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