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 $(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
26 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
27 $(obj)/vmlinux.bin: vmlinux FORCE
28 $(call if_changed,objcopy)
31 targets += vmlinux.bin.all vmlinux.relocs relocs
32 hostprogs-$(CONFIG_X86_32) += relocs
34 quiet_cmd_relocs = RELOCS $@
35 cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
36 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
37 $(call if_changed,relocs)
39 vmlinux.bin.all-y := $(obj)/vmlinux.bin
40 vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs
41 quiet_cmd_relocbin = BUILD $@
42 cmd_relocbin = cat $(filter-out FORCE,$^) > $@
43 $(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
44 $(call if_changed,relocbin)
46 ifeq ($(CONFIG_X86_32),y)
48 ifdef CONFIG_RELOCATABLE
49 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
50 $(call if_changed,gzip)
51 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin.all FORCE
52 $(call if_changed,bzip2)
53 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin.all FORCE
54 $(call if_changed,lzma)
56 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
57 $(call if_changed,gzip)
58 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
59 $(call if_changed,bzip2)
60 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
61 $(call if_changed,lzma)
63 LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
67 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
68 $(call if_changed,gzip)
69 $(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
70 $(call if_changed,bzip2)
71 $(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
72 $(call if_changed,lzma)
74 LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
77 suffix_$(CONFIG_KERNEL_GZIP) = gz
78 suffix_$(CONFIG_KERNEL_BZIP2) = bz2
79 suffix_$(CONFIG_KERNEL_LZMA) = lzma
81 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE