arch/x86_64/boot/compressed/Makefile

   1 #
   2 # linux/arch/x86_64/boot/compressed/Makefile
   3 #
   4 # create a compressed vmlinux image from the original vmlinux
   5 #
   6 # Note all the files here are compiled/linked as 32bit executables.
   7 #
   8
   9 targets         := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
  10 EXTRA_AFLAGS    := -traditional -m32
  11
  12 # cannot use EXTRA_CFLAGS because base CFLAGS contains -mkernel which conflicts with
  13 # -m32
  14 CFLAGS := -m32 -D__KERNEL__ -Iinclude -O2  -fno-strict-aliasing
  15 LDFLAGS := -m elf_i386
  16
  17 LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32 -m elf_i386
  18
  19 $(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
  20         $(call if_changed,ld)
  21         @:
  22
  23 $(obj)/vmlinux.bin: vmlinux FORCE
  24         $(call if_changed,objcopy)
  25
  26 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
  27         $(call if_changed,gzip)
  28
  29 LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
  30
  31 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
  32         $(call if_changed,ld)