SDL2_image: enable gles for armv[5-6]*

srcpkgs/SDL2_image/template

@@ -14,6 +14,27 @@ homepage="http://www.libsdl.org/projects/SDL_image/"
 distfiles="http://www.libsdl.org/projects/SDL_image/release/$pkgname-$version.tar.gz"
 checksum=3a3eafbceea5125c04be585373bfd8b3a18f259bd7eae3efc4e6d8e60e0d7f64
 
+# Package build options
+build_options="gles"
+
+case "$XBPS_TARGET_MACHINE" in
+	arm*)
+		# Enable OpenGL/ES on rpi platforms
+		build_options_default="gles"
+		;;
+esac
+
+
+if [ "$build_option_gles" ]; then
+	case "$XBPS_TARGET_MACHINE" in
+	armv[67]*)
+		# RaspberryPi, use Videocore IV
+		makedepends+=" rpi-userland-devel"
+		LDFLAGS="-L${XBPS_CROSS_BASE}/opt/vc/lib -lbcm_host"
+		;;
+	esac
+fi
+
 post_install() {
 	vlicense COPYING.txt COPYING
 }