# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: arch/arm/configs/FRT_defconfig

pkgname="linux-nokia-frt"
pkgver=3.18.79
pkgrel=0
pkgdesc="Nokia 1 kernel fork"
arch="armhf"
_carch="arm"
_flavor="nokia-frt"
url="https://kernel.org"
license="GPL-2.0-only"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev devicepkg-dev"

# Compiler: latest GCC from Alpine
HOSTCC="${CC:-gcc}"
HOSTCC="${HOSTCC#${CROSS_COMPILE}}"

# Source
_repository="android_kernel_nokia_1"
_commit="f17e3dc43479ed748f85080e5be04be228ed754d"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/pmsourcedump/${_repository}/archive/${_commit}.tar.gz
	$_config
	gcc8-fix-put-user.patch
	make.patch
"
#gcc7-give-up-on-ilog2-const-optimizations.patch
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare
	downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
}

package() {
	# kernel.release
	install -D "$builddir/include/config/kernel.release" \
		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"

	# zImage (find the right one)
	cd "$builddir/arch/$_carch/boot"
	_target="$pkgdir/boot/vmlinuz-$_flavor"
	for _zimg in zImage-dtb Image.gz-dtb *zImage Image; do
		[ -e "$_zimg" ] || continue
		msg "zImage found: $_zimg"
		install -Dm644 "$_zimg" "$_target"
		break
	done
	if ! [ -e "$_target" ]; then
		error "Could not find zImage in $PWD!"
		return 1
	fi
}

sha512sums="d9026958c7f9cb7dbc56b27baab3362d6a34e975ebf933e8ee404dc76638d17fd3d2508f262f10190f646a0881d68ab0e0a40f2fce15a55409527f3af8ea9d19  linux-nokia-frt-f17e3dc43479ed748f85080e5be04be228ed754d.tar.gz
9b1f1edbf1392eceb7a76a30801ae12636911df607f3d5eea1e441ef4647f3a402b8fa679147f708d3fed128a09093e3c717eeea035bf9564353c4a60c9547b2  config-nokia-frt.armhf
197d40a214ada87fcb2dfc0ae4911704b9a93354b75179cd6b4aadbb627a37ec262cf516921c84a8b1806809b70a7b440cdc8310a4a55fca5d2c0baa988e3967  gcc8-fix-put-user.patch
66136e2b71b60e2fee0b256eb5cfcb58f9c8d77b9851ed7ca9fc93bf790d2284be79d18a15b04b82e3443d5aae746c161dee33d044b4dcbb659d261e44086717  make.patch"