# Kernel config based on: arch/arm64/configs/karate_defconfig

pkgname="linux-lenovo-karate"
pkgver=3.18.31
pkgrel=2
pkgdesc="Lenovo K6 Power kernel fork"
arch="aarch64"
_carch="arm64"
_flavor="lenovo-karate"
url="https://github.com/karthick111/android_kernel_lenovo_msm8937"
license="GPL2"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev gcc6"

# Compiler: this kernel was only tested with GCC6. Feel free to make a merge
# request if you find out that it is booting working with newer GCCs as
# well. See <https://postmarketos.org/vendorkernel> for instructions.
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

# Source
_repository="android_kernel_lenovo_msm8937"
_commit="d99e6751356d0d310db6a16f3fe7eeaea8041675"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/karthick111/${_repository}/archive/${_commit}.tar.gz
	$_config
	compiler-gcc6.h
	01_prima_gcc6.patch
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare

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

	# Remove -Werror from all makefiles
	find . -type f -name Makefile -print0 | \
		xargs -0 sed -i 's/-Werror-/-W/g'
	find . -type f -name Makefile -print0 | \
		xargs -0 sed -i 's/-Werror//g'

	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
	cp "$srcdir"/$_config "$builddir"/.config
	yes "" | make ARCH="$_carch" HOSTCC="$HOSTCC" oldconfig
}

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="bc362a70215315eee0c63e52701488f9aa31c7e6af8d80f9dcef7c06b1d522f5e5a7a21c80c554575b21568ffb0fc2101407eb33c8d030f326943925275e34f9  linux-lenovo-karate-d99e6751356d0d310db6a16f3fe7eeaea8041675.tar.gz
ad91e3e2cf276f4c1d9c155267398d2303577a9f40a1afea3b6403bc873c0b0aa65b06ecb2ff1288ba94ac4d60295f81bf95b48a52bffe6309352c32f424ea36  config-lenovo-karate.aarch64
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
972e98523d6ef06342e69a09e979bdd86904cf7f9a843b519b37791e531b680182564a2ab537c94629c3589f4e775b2c39de04c64e210a0f8b6f10745c3596f1  01_prima_gcc6.patch"