2 # linux/arch/x86/boot/compressed/Makefile
4 # create a compressed vmlinux image from the original vmlinux
7 targets := vmlinux.lds 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 := $(KBUILD_CFLAGS) -D__ASSEMBLY__
20 LDFLAGS := -m elf_$(UTS_MACHINE)
23 hostprogs-y := mkpiggy
25 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
29 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
30 $(obj)/vmlinux.bin: vmlinux FORCE
31 $(call if_changed,objcopy)
34 targets += vmlinux.bin.all vmlinux.relocs relocs
35 hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
37 quiet_cmd_relocs = RELOCS $@
38 cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
39 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
40 $(call if_changed,relocs)
42 vmlinux.bin.all-y := $(obj)/vmlinux.bin
43 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
45 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
46 $(call if_changed,gzip)
47 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
48 $(call if_changed,bzip2)
49 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
50 $(call if_changed,lzma)
52 suffix-$(CONFIG_KERNEL_GZIP) := gz
53 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
54 suffix-$(CONFIG_KERNEL_LZMA) := lzma
56 quiet_cmd_mkpiggy = MKPIGGY $@
57 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
60 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
61 $(call if_changed,mkpiggy)