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 vmlinux.bin.xz vmlinux.bin.lzo head_$(BITS).o misc.o string.o cmdline.o early_serial_console.o piggy.o
9 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
11 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
12 cflags-$(CONFIG_X86_32) := -march=i386
13 cflags-$(CONFIG_X86_64) := -mcmodel=small
14 KBUILD_CFLAGS += $(cflags-y)
15 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
16 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
18 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
21 LDFLAGS := -m elf_$(UTS_MACHINE)
24 hostprogs-y := mkpiggy
25 HOST_EXTRACFLAGS += -I$(srctree)/tools/include
27 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
28 $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
31 ifeq ($(CONFIG_EFI_STUB), y)
32 VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
35 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
39 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
40 $(obj)/vmlinux.bin: vmlinux FORCE
41 $(call if_changed,objcopy)
43 targets += vmlinux.bin.all vmlinux.relocs
45 CMD_RELOCS = arch/x86/tools/relocs
46 quiet_cmd_relocs = RELOCS $@
47 cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
48 $(obj)/vmlinux.relocs: vmlinux FORCE
49 $(call if_changed,relocs)
51 vmlinux.bin.all-y := $(obj)/vmlinux.bin
52 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
54 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
55 $(call if_changed,gzip)
56 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
57 $(call if_changed,bzip2)
58 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
59 $(call if_changed,lzma)
60 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
61 $(call if_changed,xzkern)
62 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
63 $(call if_changed,lzo)
65 suffix-$(CONFIG_KERNEL_GZIP) := gz
66 suffix-$(CONFIG_KERNEL_BZIP2) := bz2
67 suffix-$(CONFIG_KERNEL_LZMA) := lzma
68 suffix-$(CONFIG_KERNEL_XZ) := xz
69 suffix-$(CONFIG_KERNEL_LZO) := lzo
71 quiet_cmd_mkpiggy = MKPIGGY $@
72 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
75 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
76 $(call if_changed,mkpiggy)