Makefile 2.4 KB
Newer Older
1 2 3 4 5 6
#
# linux/arch/x86/boot/compressed/Makefile
#
# 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
8 9 10 11 12 13 14 15 16 17 18 19 20

KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
cflags-$(CONFIG_X86_64) := -mcmodel=small
KBUILD_CFLAGS += $(cflags-y)
KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)

KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__

LDFLAGS := -m elf_$(UTS_MACHINE)
LDFLAGS_vmlinux := -T

21
$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
22 23 24
	$(call if_changed,ld)
	@:

25
OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
26 27 28 29
$(obj)/vmlinux.bin: vmlinux FORCE
	$(call if_changed,objcopy)


30 31
targets += vmlinux.bin.all vmlinux.relocs relocs
hostprogs-$(CONFIG_X86_32) += relocs
32 33 34 35 36 37 38 39 40 41 42 43 44

quiet_cmd_relocs = RELOCS  $@
      cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
	$(call if_changed,relocs)

vmlinux.bin.all-y := $(obj)/vmlinux.bin
vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs
quiet_cmd_relocbin = BUILD   $@
      cmd_relocbin = cat $(filter-out FORCE,$^) > $@
$(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
	$(call if_changed,relocbin)

45 46
ifeq ($(CONFIG_X86_32),y)

47 48 49
ifdef CONFIG_RELOCATABLE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
	$(call if_changed,gzip)
50 51 52 53
$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin.all FORCE
	$(call if_changed,bzip2)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin.all FORCE
	$(call if_changed,lzma)
54
else
55 56
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
	$(call if_changed,gzip)
57 58 59 60
$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
	$(call if_changed,bzip2)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
	$(call if_changed,lzma)
61
endif
62 63 64
LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T

else
65

66 67
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
	$(call if_changed,gzip)
68 69 70 71
$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
	$(call if_changed,bzip2)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
	$(call if_changed,lzma)
72 73 74 75

LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
endif

76 77 78 79 80
suffix_$(CONFIG_KERNEL_GZIP)  = gz
suffix_$(CONFIG_KERNEL_BZIP2) = bz2
suffix_$(CONFIG_KERNEL_LZMA)  = lzma

$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
81
	$(call if_changed,ld)