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 vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
  7. KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
  8. KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
  9. KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
  10. cflags-$(CONFIG_X86_64) := -mcmodel=small
  11. KBUILD_CFLAGS += $(cflags-y)
  12. KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
  13. KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
  14. KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
  15. LDFLAGS := -m elf_$(UTS_MACHINE)
  16. LDFLAGS_vmlinux := -T
  17. hostprogs-y := mkpiggy
  18. $(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
  19. $(call if_changed,ld)
  20. @:
  21. OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
  22. $(obj)/vmlinux.bin: vmlinux FORCE
  23. $(call if_changed,objcopy)
  24. targets += vmlinux.bin.all vmlinux.relocs relocs
  25. hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
  26. quiet_cmd_relocs = RELOCS $@
  27. cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
  28. $(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
  29. $(call if_changed,relocs)
  30. vmlinux.bin.all-y := $(obj)/vmlinux.bin
  31. vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
  32. $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
  33. $(call if_changed,gzip)
  34. $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
  35. $(call if_changed,bzip2)
  36. $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
  37. $(call if_changed,lzma)
  38. suffix-$(CONFIG_KERNEL_GZIP) := gz
  39. suffix-$(CONFIG_KERNEL_BZIP2) := bz2
  40. suffix-$(CONFIG_KERNEL_LZMA) := lzma
  41. quiet_cmd_mkpiggy = MKPIGGY $@
  42. cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
  43. targets += piggy.S
  44. $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
  45. $(call if_changed,mkpiggy)