makefile

LINUX 2.6.17.4的源码

#
# linux/arch/sh/boot/compressed/Makefile
#
# create a compressed vmlinux image from the original vmlinux
#

targets		:= vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
EXTRA_AFLAGS	:= -traditional

OBJECTS = $(obj)/head.o $(obj)/misc.o

ifdef CONFIG_SH_STANDARD_BIOS
OBJECTS += $(obj)/../../kernel/sh_bios.o
endif

#
# IMAGE_OFFSET is the load offset of the compression loader
# Assign dummy values if these 2 variables are not defined,
# in order to suppress error message.
#
CONFIG_MEMORY_START     ?= 0x0c000000
CONFIG_BOOT_LINK_OFFSET ?= 0x00800000
IMAGE_OFFSET := $(shell printf "0x%8x" $$[0x80000000+$(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)])

LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds

$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE
	$(call if_changed,ld)
	@:

$(obj)/vmlinux.bin: vmlinux FORCE
	$(call if_changed,objcopy)

$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
	$(call if_changed,gzip)

LDFLAGS_piggy.o := -r --format binary --oformat elf32-sh-linux -T
OBJCOPYFLAGS += -R .empty_zero_page

$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
	$(call if_changed,ld)