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

pkgname="linux-lg-d722"
pkgver=3.4.0
pkgrel=0
pkgdesc="LG G3 Beat kernel fork"
arch="armv7"
_carch="arm"
_flavor="lg-d722"
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 dtbtool"

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

# Source
_repository="android_kernel_lge_msm8226"
_commit="bf756279493c2cc4656b784afa29822b30838e98"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	gcc7-give-up-on-ilog2-const-optimizations.patch
	gcc8-fix-put-user.patch
	kernel-use-the-gnu89-standard-explicitly.patch
"
builddir="$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"

	# Generate master DTB (deviceinfo_bootimg_qcdt)
	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm/boot/dt.img" "arch/arm/boot/"
}

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

	# Master DTB (deviceinfo_bootimg_qcdt)
	install -Dm644 "$builddir/arch/arm/boot/dt.img" \
		"$pkgdir/boot/dt.img"
}

sha512sums="6406689c9fe29ab7bc6874cd7ed0d3770fd15a3befc90f1d2fef26b100c581c0dd99ec3bd30f83ff42f2ba8b29239ac7254ebc8f359fbe70348d862b07057e79  linux-lg-d722-bf756279493c2cc4656b784afa29822b30838e98.tar.gz
658e9727683fb04f5034365ac6aac0e651476bf39e14ceb1b578a6cecbc9d0e564aa9f4b5a81b4609248da770ca31bc2e0ec6a2fa10e1f1e3d5d32c3062896da  config-lg-d722.armv7
77eba606a71eafb36c32e9c5fe5e77f5e4746caac292440d9fb720763d766074a964db1c12bc76fe583c5d1a5c864219c59941f5e53adad182dbc70bf2bc14a7  gcc7-give-up-on-ilog2-const-optimizations.patch
197d40a214ada87fcb2dfc0ae4911704b9a93354b75179cd6b4aadbb627a37ec262cf516921c84a8b1806809b70a7b440cdc8310a4a55fca5d2c0baa988e3967  gcc8-fix-put-user.patch
ad0182a483791fc88e058838bc331b2f04a75ba291e763767babdb815efadfc3b4fda97e69e2e3f00a426cabea088e35297a92bd287592597d1e309be68ee92c  kernel-use-the-gnu89-standard-explicitly.patch"