arch/x86/boot/compressed/Makefile

   1 #
   2 # linux/arch/x86/boot/compressed/Makefile
   3 #
   4 # create a compressed vmlinux image from the original vmlinux
   5 #
   6
   7 targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
   8
   9 KBUILD_CFLAGS := -m$(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)
  16
  17 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  18 GCOV_PROFILE := n
  19
  20 LDFLAGS := -m elf_$(UTS_MACHINE)
  21 LDFLAGS_vmlinux := -T
  22
  23 hostprogs-y     := mkpiggy
  24
  25 $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
  26         $(call if_changed,ld)
  27         @:
  28
  29 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  30 $(obj)/vmlinux.bin: vmlinux FORCE
  31         $(call if_changed,objcopy)
  32
  33
  34 targets += vmlinux.bin.all vmlinux.relocs relocs
  35 hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
  36
  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)
  41
  42 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  43 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  44
  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         $(call if_changed,lzma)
  51
  52 suffix-$(CONFIG_KERNEL_GZIP)    := gz
  53 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
  54 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
  55
  56 quiet_cmd_mkpiggy = MKPIGGY $@
  57       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  58
  59 targets += piggy.S
  60 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  61         $(call if_changed,mkpiggy)