cpio: convert to ROOTFS_TARGET infrastructure

#

#############################################################

CPIO_BASE:=$(IMAGE).cpio

CPIO_ROOTFS_COMPRESSOR:=

CPIO_ROOTFS_COMPRESSOR_EXT:=

CPIO_ROOTFS_COMPRESSOR_PREREQ:=

ifeq ($(BR2_TARGET_ROOTFS_CPIO_GZIP),y)

CPIO_ROOTFS_COMPRESSOR:=gzip -9 -c

CPIO_ROOTFS_COMPRESSOR_EXT:=gz

endif

ifeq ($(BR2_TARGET_ROOTFS_CPIO_BZIP2),y)

CPIO_ROOTFS_COMPRESSOR:=bzip2 -9 -c

CPIO_ROOTFS_COMPRESSOR_EXT:=bz2

endif

ifeq ($(BR2_TARGET_ROOTFS_CPIO_LZMA),y)

CPIO_ROOTFS_COMPRESSOR:=$(LZMA) -9 -c

CPIO_ROOTFS_COMPRESSOR_EXT:=lzma

CPIO_ROOTFS_COMPRESSOR_PREREQ:= host-lzma

endif

ifneq ($(CPIO_ROOTFS_COMPRESSOR),)

CPIO_TARGET := $(CPIO_BASE).$(CPIO_ROOTFS_COMPRESSOR_EXT)

else

CPIO_TARGET := $(CPIO_BASE)

endif

cpioroot-init:

define ROOTFS_CPIO_INIT_SYMLINK

	rm -f $(TARGET_DIR)/init

	ln -s sbin/init $(TARGET_DIR)/init

endef

$(CPIO_BASE): host-fakeroot makedevs cpioroot-init

	# Use fakeroot to pretend all target binaries are owned by root

	rm -f $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

	touch $(BUILD_DIR)/.fakeroot.00000

	cat $(BUILD_DIR)/.fakeroot* > $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

	echo "chown -R 0:0 $(TARGET_DIR)" >> $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

ifneq ($(TARGET_DEVICE_TABLE),)

	# Use fakeroot to pretend to create all needed device nodes

	echo "$(HOST_DIR)/usr/bin/makedevs -d $(TARGET_DEVICE_TABLE) $(TARGET_DIR)" \

		>> $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

endif

	# Use fakeroot so tar believes the previous fakery

	echo "cd $(TARGET_DIR) && find . | cpio --quiet -o -H newc > $(CPIO_BASE)" \

		>> $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

	chmod a+x $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

	$(HOST_DIR)/usr/bin/fakeroot -- $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

	-@rm -f $(BUILD_DIR)/_fakeroot.$(notdir $(CPIO_BASE))

ROOTFS_CPIO_PRE_GEN_HOOKS += ROOTFS_CPIO_INIT_SYMLINK

ifneq ($(CPIO_ROOTFS_COMPRESSOR),)

$(CPIO_BASE).$(CPIO_ROOTFS_COMPRESSOR_EXT): $(CPIO_ROOTFS_COMPRESSOR_PREREQ) $(CPIO_BASE)

	$(CPIO_ROOTFS_COMPRESSOR) $(CPIO_BASE) > $(CPIO_TARGET)

endif

define ROOTFS_CPIO_CMD

	cd $(TARGET_DIR) && find . | cpio --quiet -o -H newc > $$@

endef

#############################################################

#

# Toplevel Makefile options

#

#############################################################

ifeq ($(BR2_TARGET_ROOTFS_CPIO),y)

TARGETS+=cpioroot

endif

$(eval $(call ROOTFS_TARGET,cpio))

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