2 # linux/arch/x86/boot/compressed/Makefile
4 # create a compressed vmlinux image from the original vmlinux
7 targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
9 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
11 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
12 cflags-$(CONFIG_X86_64) := -mcmodel=small
13 KBUILD_CFLAGS += $(cflags-y)
14 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
15 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
17 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
19 LDFLAGS := -m elf_$(UTS_MACHINE)
22 hostprogs-y := mkpiggy
24 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
28 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
29 $(obj)/vmlinux.bin: vmlinux FORCE
30 $(call if_changed,objcopy)
33 targets += vmlinux.bin.all vmlinux.relocs relocs
34 hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
36 quiet_cmd_relocs = RELOCS $@
37 cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
38 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
39 $(call if_changed,relocs)
41 vmlinux.bin.all-y := $(obj)/vmlinux.bin
42 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
44 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
45 $(call if_changed,gzip)
46 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
47 $(call if_changed,bzip2)
48 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
49 $(call if_changed,lzma)
51 suffix-$(CONFIG_KERNEL_GZIP) := gz
52 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
53 suffix-$(CONFIG_KERNEL_LZMA) := lzma
55 quiet_cmd_mkpiggy = MKPIGGY $@
56 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
59 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
60 $(call if_changed,mkpiggy)