VERSION="1.20180417-1"
SRCDIR="linux-raspberrypi-kernel_${VERSION}"
TARBALL="raspberrypi-kernel_${VERSION}.tar.gz"
URL="https://github.com/raspberrypi/linux/archive"
SHA256SUM="7808fe8fe260f6a8b1781cbd5585d739d900af57b6784aa04af3425d3632b03f"
DEPENDS="initrd"

prepare() {
	return
}

build() {
	local INITRDLIST="$PKGDEPLOYDIR/initrd/initrd.list"

	export KBUILD_OUTPUT="$PKGBUILDDIR"
	make -C "$1" O="$PKGBUILDDIR" ARCH="arm" CROSS_COMPILE="${TARGET}-" mrproper

	cat_file_override "linux.config" > "$PKGBUILDDIR/.config"
	sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_CROSS_COMPILE=.*,CONFIG_CROSS_COMPILE="'$TARGET'-",'
	sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_INITRAMFS_SOURCE=.*,CONFIG_INITRAMFS_SOURCE="'$INITRDLIST'",'
	make -C "$1" O="$PKGBUILDDIR" ARCH="arm" CROSS_COMPILE="${TARGET}-" oldconfig

	sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_CROSS_COMPILE=.*,CONFIG_CROSS_COMPILE="'$TARGET'-",'
	sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_INITRAMFS_SOURCE=.*,CONFIG_INITRAMFS_SOURCE="'$INITRDLIST'",'
	sed -i "$PKGBUILDDIR/.config" -e 's,^CONFIG_LOCALVERSION=.*,CONFIG_LOCALVERSION="-'${OS_NAME}-${OS_RELEASE}'",'
	make -C "$1" O="$PKGBUILDDIR" ARCH="arm" CROSS_COMPILE="${TARGET}-" -j $NUMJOBS zImage dtbs
}

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

	install -m 755 "arch/arm/boot/zImage" "$DEPLOY/vmlinuz"
}

check_update() {
	local version=$(echo $VERSION | sed 's/-/./g')

	curl --silent -L "https://github.com/raspberrypi/linux/releases" | \
	    grep -o "raspberrypi-kernel_[0-9.]*-[0-9]" | \
	    sed 's/raspberrypi-kernel_//g' | sed 's/-/./g' | \
	    verson_find_greatest "$version"
}