# 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_i9305_defconfig
# Changes:
# - enable devtmpfs (needed for udev -> touch support in weston)
# - adding xz to makedepends because of lzma: unrecognized option: 9 (https://wiki.postmarketos.org/wiki/Troubleshooting:kernel)
# - add kernel modules installation
# - disable ANDROID_PARANOID_NETWORK (removes network restrictions)

_flavor=samsung-i9300
_hash="fa8fa332fdec11744ffe0c742775cc22efe0d041"

pkgname=linux-$_flavor
pkgver=3.0.101
case $pkgver in
	*.*.*)  _kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=1
arch="armv7"
_config="config-$_flavor.$arch"
pkgdesc="Samsung Galaxy SIII kernel from LineageOS"
url="https://github.com/LineageOS/android_kernel_samsung_smdk4412"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev xz busybox-static-$arch gcc6"
options="!strip !check !tracedeps pmb:cross-native"
source="
	$pkgname-$_hash.tar.gz::https://github.com/LineageOS/android_kernel_samsung_smdk4412/archive/$_hash.tar.gz
	$_config
	compiler-gcc6.h
"
license="GPL2"

_abi_release=$pkgver
_carch="arm"

# 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

builddir="$srcdir/android_kernel_samsung_smdk4412-$_hash"

prepare() {
	default_prepare

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

build() {
	unset LDFLAGS

	echo "-- [ Build kernel ] --"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS"

	echo "-- [ Build modules ] --"
	# the 'no-pic' flag is necessary to avoid the
	# error 'Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)' when loading the module
	make ARCH="$_carch" CC="${CC:-gcc}" CFLAGS_MODULE="-fno-pic" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" CONFIG_NO_ERROR_ON_MISMATCH=y \
		modules
}

package() {
	echo "--[ Installing kernel ]--"
	install -Dm644 "$builddir/arch/arm/boot/zImage" \
		"$pkgdir/boot/vmlinuz-$_flavor"

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

	unset LDFLAGS

	echo "--[ Installing modules ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" CONFIG_NO_ERROR_ON_MISMATCH=y \
		INSTALL_MOD_PATH="$pkgdir" modules_install
}

sha512sums="d87dd54152980b30012fead62e639dde6ff0862d376790eac32800aeffd91482a220c7b1f233933a1879796dcaa3722e86c42a5f0e4df4168ae1f65362952779  linux-samsung-i9300-fa8fa332fdec11744ffe0c742775cc22efe0d041.tar.gz
c1c667ff55603101ae0bb3cfb085a0536a4e817ee9e116b62bead734f758099b1abcbe21c2d8e4790de2a62bd48e3b60ae8e0eb529b829ad71e2ddf1e0296b8d  config-samsung-i9300.armv7
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h"