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 head_$(BITS).o misc.o piggy.o
9 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
11 cflags-$(CONFIG_X86_64) := -mcmodel=small
12 KBUILD_CFLAGS += $(cflags-y)
13 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
14 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
16 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
18 LDFLAGS := -m elf_$(UTS_MACHINE)
21 $(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
25 $(obj)/vmlinux.bin: vmlinux FORCE
26 $(call if_changed,objcopy)
29 ifeq ($(CONFIG_X86_32),y)
30 targets += vmlinux.bin.all vmlinux.relocs
33 quiet_cmd_relocs = RELOCS $@
34 cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
35 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
36 $(call if_changed,relocs)
38 vmlinux.bin.all-y := $(obj)/vmlinux.bin
39 vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs
40 quiet_cmd_relocbin = BUILD $@
41 cmd_relocbin = cat $(filter-out FORCE,$^) > $@
42 $(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
43 $(call if_changed,relocbin)
45 ifdef CONFIG_RELOCATABLE
46 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
47 $(call if_changed,gzip)
49 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
50 $(call if_changed,gzip)
52 LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
55 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
56 $(call if_changed,gzip)
58 LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
62 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE