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 vmlinux.bin.xz vmlinux.bin.lzo head_$(BITS).o misc.o string.o cmdline.o early_serial_console.o piggy.o 8 9KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2 10KBUILD_CFLAGS += -fno-strict-aliasing -fPIC 11KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 12cflags-$(CONFIG_X86_32) := -march=i386 13cflags-$(CONFIG_X86_64) := -mcmodel=small 14KBUILD_CFLAGS += $(cflags-y) 15KBUILD_CFLAGS += $(call cc-option,-ffreestanding) 16KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) 17 18KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 19GCOV_PROFILE := n 20 21LDFLAGS := -m elf_$(UTS_MACHINE) 22LDFLAGS_vmlinux := -T 23 24hostprogs-y := mkpiggy 25 26VMLINUX_OBJS = $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o \ 27 $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o \ 28 $(obj)/piggy.o 29 30ifeq ($(CONFIG_EFI_STUB), y) 31 VMLINUX_OBJS += $(obj)/eboot.o $(obj)/efi_stub_$(BITS).o 32endif 33 34$(obj)/vmlinux: $(VMLINUX_OBJS) FORCE 35 $(call if_changed,ld) 36 @: 37 38OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 39$(obj)/vmlinux.bin: vmlinux FORCE 40 $(call if_changed,objcopy) 41 42 43targets += vmlinux.bin.all vmlinux.relocs relocs 44hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs 45 46quiet_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 51vmlinux.bin.all-y := $(obj)/vmlinux.bin 52vmlinux.bin.all-$(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 $(call if_changed,lzo) 64 65suffix-$(CONFIG_KERNEL_GZIP) := gz 66suffix-$(CONFIG_KERNEL_BZIP2) := bz2 67suffix-$(CONFIG_KERNEL_LZMA) := lzma 68suffix-$(CONFIG_KERNEL_XZ) := xz 69suffix-$(CONFIG_KERNEL_LZO) := lzo 70 71quiet_cmd_mkpiggy = MKPIGGY $@ 72 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false ) 73 74targets += piggy.S 75$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 76 $(call if_changed,mkpiggy) 77