openwrt/target/linux/armvirt/image/Makefile

#
# Copyright (C) 2016-2017 Yousong Zhou <yszhou4tech@gmail.com>
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk

define Image/BuildKernel
	$(foreach k,$(filter zImage Image,$(KERNELNAME)), \
		cp $(KDIR)/$(KERNELNAME) $(BIN_DIR)/$(IMG_PREFIX)-$(k) \
	)
endef

define Image/Build/Initramfs
	$(foreach k,$(filter zImage Image,$(KERNELNAME)), \
		cp $(KDIR)/$(k)-initramfs $(BIN_DIR)/$(IMG_PREFIX)-$(k)-initramfs \
	)
endef

define Image/Build/gzip
	gzip -f9n $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
endef

$(eval $(call Image/gzip-ext4-padded-squashfs))

define Image/Build
	$(call Image/Build/$(1))
	$(CP) $(KDIR)/root.$(1) $(BIN_DIR)/$(IMG_ROOTFS)-$(1).img
	$(call Image/Build/gzip/$(1))
endef

$(eval $(call BuildImage))