Makefile 1.8 KB

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  1. #
  2. # linux/arch/x86/boot/compressed/Makefile
  3. #
  4. # create a compressed vmlinux image from the original vmlinux
  5. #
  6. targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc_$(BITS).o piggy.o
  7. KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
  8. KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
  9. cflags-$(CONFIG_X86_64) := -mcmodel=small
  10. KBUILD_CFLAGS += $(cflags-y)
  11. KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
  12. KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  13. KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  14. LDFLAGS := -m elf_$(UTS_MACHINE)
  15. LDFLAGS_vmlinux := -T
  16. $(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc_$(BITS).o $(obj)/piggy.o FORCE
  17. $(call if_changed,ld)
  18. @:
  19. $(obj)/vmlinux.bin: vmlinux FORCE
  20. $(call if_changed,objcopy)
  21. ifeq ($(CONFIG_X86_32),y)
  22. targets += vmlinux.bin.all vmlinux.relocs
  23. hostprogs-y := relocs
  24. quiet_cmd_relocs = RELOCS $@
  25. cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
  26. $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
  27. $(call if_changed,relocs)
  28. vmlinux.bin.all-y := $(obj)/vmlinux.bin
  29. vmlinux.bin.all-$(CONFIG_RELOCATABLE) += $(obj)/vmlinux.relocs
  30. quiet_cmd_relocbin = BUILD $@
  31. cmd_relocbin = cat $(filter-out FORCE,$^) > $@
  32. $(obj)/vmlinux.bin.all: $(vmlinux.bin.all-y) FORCE
  33. $(call if_changed,relocbin)
  34. ifdef CONFIG_RELOCATABLE
  35. $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
  36. $(call if_changed,gzip)
  37. else
  38. $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
  39. $(call if_changed,gzip)
  40. endif
  41. LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
  42. else
  43. $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
  44. $(call if_changed,gzip)
  45. LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
  46. endif
  47. $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
  48. $(call if_changed,ld)