Index: head/graphics/opencsg/Makefile
===================================================================
--- head/graphics/opencsg/Makefile	(revision 490132)
+++ head/graphics/opencsg/Makefile	(revision 490133)
@@ -1,23 +1,23 @@
 # Created by: Michael Reifenberger <mr@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	opencsg
 PORTVERSION=	1.4.2
 PORTREVISION=	3
 CATEGORIES=	graphics
 MASTER_SITES=	http://www.opencsg.org/
 DISTNAME=	OpenCSG-${PORTVERSION}
 
 MAINTAINER=	mr@FreeBSD.org
 COMMENT=	Constructive Solid Geometry rendering library
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/../license.txt
 
 USES=		compiler:c++11-lang qmake qt:5
-USE_GL=		gl glew
+USE_GL=		gl glesv2 glew
 USE_QT=		qmake_build
 WRKSRC=		${WRKDIR}/${DISTNAME}/src
 PLIST_SUB=      PORTVERSION=${PORTVERSION}
 
 .include <bsd.port.mk>