Index: head/graphics/glslang/Makefile
===================================================================
--- head/graphics/glslang/Makefile	(revision 562121)
+++ head/graphics/glslang/Makefile	(revision 562122)
@@ -1,19 +1,19 @@
 # $FreeBSD$
 
 PORTNAME=	glslang
 DISTVERSION=	11.1.0
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
 COMMENT=	OpenGL and OpenGL ES shader front end and validator
 
 LICENSE=	APACHE20 BSD2CLAUSE BSD3CLAUSE GPLv3+ MIT
 LICENSE_COMB=	multi
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-USES=		cmake compiler:c++11-lib
+USES=		cmake compiler:c++11-lib python:3.4+,build
 USE_GITHUB=	yes
 GH_ACCOUNT=	KhronosGroup
 TEST_TARGET=	test
 
 .include <bsd.port.mk>