1# 2# linux/arch/x86/boot/compressed/Makefile 3# 4# create a compressed vmlinux image from the original vmlinux 5# 6 7targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o 8 9KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 10KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 11KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 12cflags-$(CONFIG_X86_64) := -mcmodel=small 13KBUILD_CFLAGS += $(cflags-y) 14KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 15KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 16 17KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 18GCOV_PROFILE := n 19 20LDFLAGS := -m elf_$(UTS_MACHINE) 21LDFLAGS_vmlinux := -T 22 23hostprogs-y := mkpiggy 24 25$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE 26 $(call if_changed,ld) 27 @: 28 29OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 30$(obj)/vmlinux.bin: vmlinux FORCE 31 $(call if_changed,objcopy) 32 33 34targets += vmlinux.bin.all vmlinux.relocs relocs 35hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs 36 37quiet_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 42vmlinux.bin.all-y := $(obj)/vmlinux.bin 43vmlinux.bin.all-$(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 $(call if_changed,lzma) 51 52suffix-$(CONFIG_KERNEL_GZIP) := gz 53suffix-$(CONFIG_KERNEL_BZIP2) := bz2 54suffix-$(CONFIG_KERNEL_LZMA) := lzma 55 56quiet_cmd_mkpiggy = MKPIGGY $@ 57 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false ) 58 59targets += piggy.S 60$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 61 $(call if_changed,mkpiggy) 62