update.tar: output/update.tar.zstd

.prepared: \
		prepare.sh \
		config-portage.sh \
		setup-local-repo.sh \
		$(shell find portage host-portage -type f) \
		$(shell find patches/ebuilds -type f)
	./prepare.sh
	./config-portage.sh
	./setup-local-repo.sh
	touch .prepared

prepare: .prepared

.host-tools: \
		build-host-tools.sh \
		.prepared
	./build-host-tools.sh
	touch .host-tools

host-tools: .host-tools

.built: \
		build.sh \
		build-rootfs.sh \
		linux/arch/arm64/boot/Image.gz \
		.host-tools \
		.prepared
	./build.sh
	./build-rootfs.sh
	touch .built

images/rootfs.squashfs: \
		build-squashfs.sh \
		squashfs.exclude \
		.built
	./build-squashfs.sh

squashfs: images/rootfs.squashfs

linux/arch/arm64/boot/Image.gz: \
		build-kernel.sh \
		linux.config \
		.host-tools \
		.prepared
	./build-kernel.sh

kernel: linux/arch/arm64/boot/Image.gz

output/efi-part/EFI/BOOT/BOOTAA64.efi: \
		build-grub.sh \
		grub.cfg \
		.host-tools \
		.prepared
	./build-grub.sh

grub: output/efi-part/EFI/BOOT/BOOTAA64.efi

output/efi-part/u-boot.bin: \
		build-uboot.sh \
		u-boot.config
	./build-uboot.sh

uboot: output/efi-part/u-boot.bin

images/sdcard.img: \
		genimage.cfg \
		genimage.sh \
		post-build.sh \
		output/efi-part/u-boot.bin \
		output/efi-part/EFI/BOOT/BOOTAA64.efi
	./post-build.sh
	./genimage.sh

sdcard.img: images/sdcard.img

images/firmware.img: images/sdcard.img

output/update.tar.zstd: \
		images/rootfs.squashfs \
		images/firmware.img \
		install-update.sh \
		.host-tools \
		.prepared
	./build-update.sh

clean:
	git -C u-boot clean -fdx && git -C u-boot checkout -- .
	rm -rf linux output images tmp
	rm -f .prepared .host-tools

.PHONY: \
	grub \
	host-tools \
	kernel \
	prepare \
	sdcard.img \
	squashfs \
	uboot \
	update.tar