testing/extremetuxracer: new aport

Signed-off-by: Danct12 <danct12@disroot.org>

testing/extremetuxracer/APKBUILD

+# Contributor: Danct12 <danct12@disroot.org>
+# Maintainer: Danct12 <danct12@disroot.org>
+pkgname=extremetuxracer
+pkgver=0.7.5
+pkgrel=0
+pkgdesc="Downhill racing game starring Tux"
+url="https://sourceforge.net/projects/extremetuxracer"
+arch="all"
+license="GPL-2.0-only"
+makedepends="sfml-dev glu-dev freetype-dev"
+source="https://downloads.sourceforge.net/extremetuxracer/etr-$pkgver.tar.xz"
+subpackages="$pkgname-doc"
+builddir="$srcdir/etr-$pkgver"
+
+build() {
+	./configure --prefix=/usr
+	make
+}
+
+check() {
+    make check
+}
+
+package() {
+	make DESTDIR="$pkgdir" install
+}
+sha512sums="62ea5ccdacb3e793760fe793133f1866179dffd938fd4b8e5c369371d847320a247bf85a89648b7c01078dc18a65ac6eac30a59bfe710032c79c16ab93f9e4aa  etr-0.7.5.tar.xz"