DEPENDS="rootfs linux-rpi3 boot-rpi3"

build() {
	local SOURCE="$1"
	local DEPLOY="$2"

	# copy output of immediate dependencies
	mkdir -p "$PKGBUILDDIR/boot"

	for pkgname in $DEPENDS; do
		if [ -e "$PKGDEPLOYDIR/$pkgname" ]; then
			cp -ru ${PKGDEPLOYDIR}/${pkgname}/* "$PKGBUILDDIR/boot"
		fi
	done

	# copy files from this package
	cp "$SCRIPTDIR/pkg/$PKGNAME/cmdline.txt" "$PKGBUILDDIR/boot"
	cp "$SCRIPTDIR/pkg/$PKGNAME/install.sh" "$PKGBUILDDIR"
	cp "$SCRIPTDIR/pkg/$PKGNAME/genimage.sh" "$PKGBUILDDIR"

	# substitute file names in scripts
	mkdir -p "$PKGBUILDDIR/boot/$OS_RELEASE"
	mv "$PKGBUILDDIR/boot/rootfs.img" "$PKGBUILDDIR/boot/$OS_RELEASE"
	mv "$PKGBUILDDIR/boot/vmlinuz" "$PKGBUILDDIR/boot/$OS_RELEASE"

	local rootfs_image="$OS_RELEASE/rootfs.img"
	local kernel_image="$OS_RELEASE/vmlinuz"

	sed -i 's#ROOTFSFILE#'$rootfs_image'#g' "$PKGBUILDDIR/boot/cmdline.txt"
	sed -i 's#KERNELFILE#'$kernel_image'#g' "$PKGBUILDDIR/boot/config.txt"
}

deploy() {
	local SOURCE="$1"
	local DEPLOY="$2"

	tar czf "$DEPLOY/$PKGNAME.tar.gz" *
}