# APKBUILD based on linux-vanilla aport. Changes:
# - disabled module installation
# - add !check !tracedeps
# - package: just install zimage and kernel.release, because the kernel config
#	does not generate modules or dtb files
# - do not create -dev subpackage (makes no sense without module support)
#
# Kernel config based on: arch/arm/configs/lineageos_mako_defconfig
# Changes:
# - enable devtmpfs (needed for udev -> touch support in weston)

_vendor=samsung
_flavor=samsung_tuna
_hash="e14e5fe679a63eef92346cde874175d8b62b6a4a"
_config="config-${_flavor}.armhf"

pkgname=linux-${_flavor}
pkgver=3.4.0
case $pkgver in
	*.*.*)  _kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=3
arch="armhf"
pkgdesc="Nexus 4 kernel from LineageOS"
url="https://github.com/LineageOS/android_kernel_samsung_tuna"
depends="postmarketos-mkinitfs"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev"
options="!strip !check !tracedeps"
install=
source="
	https://github.com/LineageOS/android_kernel_${_flavor}/archive/${_hash}.zip
	$_config
	compiler-gcc6.h
	android_paranoid_network.patch
	fix_old_perl_code.patch
"
subpackages=""
license="GPL2"

_abi_release=${pkgver}
_carch="arm"
HOSTCC="${CC:-gcc}"
HOSTCC="${HOSTCC#${CROSS_COMPILE}}"

ksrcdir="$srcdir/android_kernel_${_flavor}-${_hash}"

prepare() {
	local _patch_failed=
	cd "$ksrcdir"

	# first apply patches in specified order
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
			if ! patch -s -p1 -N -i "$srcdir"/$i; then
				echo $i >>failed
				_patch_failed=1
			fi
			;;
		esac
	done

	if ! [ -z "$_patch_failed" ]; then
		error "The following patches failed:"
		cat failed
		return 1
	fi

	# gcc6 support
	cp -v "$srcdir/compiler-gcc6.h" "$ksrcdir/include/linux/"

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
	make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
		silentoldconfig
}



# this is so we can do: 'abuild menuconfig' to reconfigure kernel
menuconfig() {
	cd "$srcdir"/build || return 1
	make ARCH="$_carch" menuconfig
	cp .config "$startdir"/$_config
}

build() {
	cd "$srcdir"/build
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
		|| return 1
}

package() {
	install -Dm644 "$srcdir/build/arch/arm/boot/zImage" \
		"$pkgdir/boot/vmlinuz-$_flavor"

	install -D "$srcdir/build/include/config/kernel.release" \
		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
}

sha512sums="c048b4f195ac6083e1884e41a7fc77c111edb555e6d53ee391d6220f308138c76389edaeb6b166c6f132fa33e8588f03734ed70397440a738b8e3f1c0068fbab  e14e5fe679a63eef92346cde874175d8b62b6a4a.zip
0ba849bfc08d5f2536ddc7fbf02ae78cc1dae3177efcc4994fa684545f01c43e5c144c0fc0eb39a394302a8e50204dcd49de092b0283bddb040e43173de3f00c  config-samsung_tuna.armhf
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
d8cdc1137e6a4ad78a3a31acc40f0c98f4db272eaf5b90ee850abb83b80916c4ff3c18a0a181e94eebead44213f6314e3363d0c4b91d95ee1adafbcad6dc57ab  android_paranoid_network.patch
65eb11dca6645073885228af6aae6efa40b6f063fd04157b501acf40368bf331dd701f746ed187659f654a9354ddf304aaefca8ffc9ea2b00c145c61162e1189  fix_old_perl_code.patch"