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 vmlinux.bin.xz vmlinux.bin.lzo head_$(BITS).o misc.o string.o cmdline.o early_serial_console.o piggy.o
   8
   9 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
  10 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
  11 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
  12 cflags-$(CONFIG_X86_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)
  17
  18 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  19 GCOV_PROFILE := n
  20
  21 LDFLAGS := -m elf_$(UTS_MACHINE)
  22 LDFLAGS_vmlinux := -T
  23
  24 hostprogs-y     := mkpiggy
  25
  26 VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \
  27         $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \
  28         $(obj)/piggy.o
  29
  30 ifeq ($(CONFIG_EFI_STUB), y)
  31         VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o
  32 endif
  33
  34 $(obj)/vmlinux: $(VMLINUX_OBJS) FORCE
  35         $(call if_changed,ld)
  36         @:
  37
  38 OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
  39 $(obj)/vmlinux.bin: vmlinux FORCE
  40         $(call if_changed,objcopy)
  41
  42
  43 targets += vmlinux.bin.all vmlinux.relocs relocs
  44 hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
  45
  46 quiet_cmd_relocs = RELOCS  $@
  47       cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
  48 $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
  49         $(call if_changed,relocs)
  50
  51 vmlinux.bin.all-y := $(obj)/vmlinux.bin
  52 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  53
  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         $(call if_changed,lzo)
  64
  65 suffix-$(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
  70
  71 quiet_cmd_mkpiggy = MKPIGGY $@
  72       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  73
  74 targets += piggy.S
  75 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  76         $(call if_changed,mkpiggy)