# Kernel config based on: arch/arm64/configs/S88536AA2-perf_defconfig

pkgname="linux-xiaomi-santoni"
pkgver=3.18.31
pkgrel=0
pkgdesc="Xiaomi Redmi 4X kernel fork"
arch="aarch64"
_carch="arm64"
_flavor="xiaomi-santoni"
url="https://kernel.org"
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="Xiaomi_Kernel_OpenSource"
_commit="09baf1a3dd0e13a81e484035f0be71dcb2ecc723"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/MiCode/${_repository}/archive/${_commit}.tar.gz
	$_config
	compiler-gcc6.h
	02_fix_msm_dba.patch
	03_fix_rndis_ipa_trace_header_not_found.patch
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare

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

	# Remove -Werror from all makefiles
	local i
	local makefiles="$(find . -type f -name Makefile)
		$(find . -type f -name Kbuild)"
	for i in $makefiles; do
		sed -i 's/-Werror-/-W/g' "$i"
		sed -i 's/-Werror//g' "$i"
	done

	# 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="f776fe0fbb5e155da8af9cbcb29bd7f712a74d3ae6f4617e5d31b119b5ff160e66196e8be107a7216d670cad7be89c108426fef5b2cd3f2baedbf8496db9f4f6  linux-xiaomi-santoni-09baf1a3dd0e13a81e484035f0be71dcb2ecc723.tar.gz
e5e84c9eb1dcd14a81c00000d35b0af506869aaaa5845cb6213e9a2eaee0150f342b9e6c6f80723923b32165f7750ee05483c1f03ce763e358514b2970ec0d7f  config-xiaomi-santoni.aarch64
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
7e765cb696fa8c3dfbc305b05cbf1fad85fb9572613d5391e945341dae5974a745f4906c795dc841e5562b19ab77d5257f9741e514af2c2573aa4bb8b262ce51  02_fix_msm_dba.patch
9c549714f03c7a7666e8aa7508a48cfdccab7cf3e97fb59c4df8fa97f75492365926f82c4a677c50780d68d4905504dcccbdd6de6344bd8d4b88b2331933ed46  03_fix_rndis_ipa_trace_header_not_found.patch"