Ports: Add Mesa GLU

This is a dependency for Tux Racer, and is compiled against Serenity's
LibGL.

Ports/glu/package.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=glu
+useconfigure="true"
+version="9.0.2"
+workdir="glu-glu-${version}"
+files="https://gitlab.freedesktop.org/mesa/glu/-/archive/glu-${version}/glu-glu-${version}.tar.gz glu-glu-${version}.tar.gz 332d93a16376bc007e8232a8e5534da84e548cf3db9de040442c47a21f4625ba"
+auth_type=sha256
+depends=("pkgconf")
+
+pre_configure() {
+    export ACLOCAL="aclocal -I${SERENITY_INSTALL_ROOT}/usr/local/lib/pkgconfig"
+    export GL_CFLAGS="-I${SERENITY_INSTALL_ROOT}/usr/include/LibGL"
+    export GL_LIBS="-lgl"
+
+    run libtoolize
+    run aclocal
+    run autoconf
+    run automake --add-missing
+
+    # Manual config.sub patch
+    run cp config.sub config.sub.contents
+    run mv -f config.sub.contents config.sub
+    run sed -i 's/-haiku/-serenity/' config.sub
+}
+
+post_configure() {
+    unset ACLOCAL
+    unset GL_CFLAGS
+    unset GL_LIBS
+}