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# Contributor: Stuart Cardall <developer@it-offshore.co.uk>
# Maintainer: Stuart Cardall <developer@it-offshore.co.uk>

# wireguard version
_ver=1.0.20200401
_rel=0

# kernel version
_kver=5.4.34
_krel=0

_kpkgver="$_kver-r$_krel"

# for custom kernels set $FLAVOR
_extra_flavors=
if [ -z "$FLAVOR" ]; then
	_flavor=rpi
	case $CARCH in
	armhf) _extra_flavors=rpi2;;
	armv7) _extra_flavors="rpi2 rpi4";;
	aarch64) _extra_flavors=rpi4;;
	esac
else
	_flavor=$FLAVOR
fi
_kpkg=linux-$_flavor

pkgname=wireguard-$_flavor
pkgver=$_kver
pkgrel=$(($_rel + $_krel))

pkgdesc="Next generation secure network tunnel: kernel modules for $_flavor"
arch="armhf armv7 aarch64"
url="https://www.wireguard.com"
license="GPL-2.0"
depends="linux-$_flavor=$_kpkgver"
makedepends="
	libmnl-dev
	linux-$_flavor-dev=$_kpkgver
	linux-firmware-none
	"
install_if="wireguard-tools-wg linux-$_flavor=$_kpkgver"
options="!check"
source="https://git.zx2c4.com/wireguard-linux-compat/snapshot/wireguard-linux-compat-$_ver.tar.xz"
builddir="$srcdir"/wireguard-linux-compat-$_ver

for f in $_extra_flavors; do
	makedepends="$makedepends linux-$f-dev=$_kpkgver"
	subpackages="$subpackages wireguard-$f:_extra"
done

prepare() {
	default_prepare
	if [ -z "$FLAVOR" ]; then
		(	. "$startdir"/../../main/linux-$_flavor/APKBUILD
			[ "$_kver" != "$pkgver" ] && die "please update _kver to $pkgver"
			[ "$_krel" != "$pkgrel" ] && die "please update _krel to $pkgrel"
			return 0
		)
	fi
	local flavor=
	for flavor in $_flavor $_extra_flavors; do
		cp -r "$builddir" "$srcdir"/$flavor
	done
}

build() {
	unset LDFLAGS
	local flavor= kabi=
	for flavor in $_flavor $_extra_flavors; do
		kabi="$_kver-$_krel-$flavor"
		make -C "$srcdir/$flavor"/src \
			KERNELDIR=/lib/modules/$kabi/build module
	done
}

package() {
	local kabi="$_kver-$_krel-$_flavor"
	install -Dm644 "$srcdir"/$_flavor/src/wireguard.ko \
		"$pkgdir/lib/modules/$kabi/extra/wireguard.ko"
}

_extra() {
	flavor=${subpkgname##*-}
	depends="linux-$flavor=$_kpkgver"
	install_if="wireguard-tools-wg linux-$flavor=$_kpkgver"
	pkgdesc="Next generation secure network tunnel: kernel modules for $flavor"
	local kabi="$_kver-$_krel-$flavor"
	install -Dm644 "$srcdir"/$flavor/src/wireguard.ko \
		"$subpkgdir/lib/modules/$kabi/extra/wireguard.ko"
}

sha512sums="894da609c7102eb1d076a4a7bdaa96c7d5f0d64b4b86fdf01068ac5f4af966652e7ad7f18b1295a7fc4447f53b55a9ec45f1b3f36f0f9df7fb08836dfdff89f0  wireguard-linux-compat-1.0.20200401.tar.xz"