# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: arch/arm/configs/lineageos_find7_defconfig

pkgname="linux-oppo-find-7a"
pkgver=3.4.113
pkgrel=1
pkgdesc="OPPO Find 7a kernel fork"
arch="armv7"
_carch="arm"
_flavor="oppo-find-7a"
url="https://kernel.org"
license="GPL-2.0-only"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-libelf devicepkg-dev dtbtool xz"

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

# Source
_repository="android_kernel_oppo_msm8974"
_commit="60e8a8df2d253b053cdac10a0ffd196b7b9c3925"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	gcc7-give-up-on-ilog2-const-optimizations.patch
	gcc8-fix-put-user.patch
	kernel-use-the-gnu89-standard-explicitly.patch
	0001-fix-video-argb-setting.patch
"
builddir="$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="e3fa1f9ab51a2b6213b9abaa3bb5e010fd2c41e98f572022fcfff66f17fc3639e1b29184b923c437ab4ed3411feb7e5667303304600fac3e929793c10a16daa2  linux-oppo-find-7a-60e8a8df2d253b053cdac10a0ffd196b7b9c3925.tar.gz
30134ad4cbd9cc3c906425847dbc095b4db37011e98d0c200bb7bd4fc8c6bb468f7537b2f77e542ae401c65c75feed9e16abde1d8d9787f83131684c5a52c8bc  config-oppo-find-7a.armv7
77eba606a71eafb36c32e9c5fe5e77f5e4746caac292440d9fb720763d766074a964db1c12bc76fe583c5d1a5c864219c59941f5e53adad182dbc70bf2bc14a7  gcc7-give-up-on-ilog2-const-optimizations.patch
197d40a214ada87fcb2dfc0ae4911704b9a93354b75179cd6b4aadbb627a37ec262cf516921c84a8b1806809b70a7b440cdc8310a4a55fca5d2c0baa988e3967  gcc8-fix-put-user.patch
ad0182a483791fc88e058838bc331b2f04a75ba291e763767babdb815efadfc3b4fda97e69e2e3f00a426cabea088e35297a92bd287592597d1e309be68ee92c  kernel-use-the-gnu89-standard-explicitly.patch
a48336bbfead6ad0c84d2fce0c40a3f5530aebdff356a6835cceaf59a50a6f860d2f8027703a92927955fbb18857ba78788e010d017bf67730f069b36e96fe87  0001-fix-video-argb-setting.patch"