Index: head/math/mathmod/Makefile
===================================================================
--- head/math/mathmod/Makefile	(revision 426339)
+++ head/math/mathmod/Makefile	(revision 426340)
@@ -1,33 +1,27 @@
 # Created by: thierry@pompo.net
 # $FreeBSD$
 
 PORTNAME=	MathMod
 PORTVERSION=	4.0
 CATEGORIES=	math graphics
 MASTER_SITES=	SF/${PORTNAME:tl}/${PKGNAME}/
 DISTNAME=	${PORTNAME:tl}-${PORTVERSION}-src
 
 MAINTAINER=	thierry@FreeBSD.org
 COMMENT=	Mathematical modeling software
 
 LICENSE=	GPLv2
 
-USES=		dos2unix zip
-USE_GL=		yes
+USES=		dos2unix qmake zip
+USE_GL=		gl
 USE_QT5=	buildtools_build core gui opengl qmake_build widgets
 
 BRANCHE=	246
 WRKSRC=		${WRKDIR}/${PORTNAME:tl}-branches-${BRANCHE}-trunk
 
 PLIST_FILES=	bin/MathMod
 
 # LL / ULL suffix would be needed for integer constants
 BROKEN_FreeBSD_9_i386=	YES
-
-pre-build:
-	cd ${BUILD_WRKSRC}; ${SETENV} ${MAKE_ENV} ${QMAKE}
-
-post-install:
-	${INSTALL_PROGRAM} ${WRKSRC}/ARGET/${PORTNAME} ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>
Index: head/math/mathmod/files/patch-MathMod.pro
===================================================================
--- head/math/mathmod/files/patch-MathMod.pro	(revision 426339)
+++ head/math/mathmod/files/patch-MathMod.pro	(revision 426340)
@@ -1,10 +1,23 @@
---- MathMod.pro.orig	2016-03-03 21:15:56 UTC
+--- MathMod.pro.orig	2016-11-18 12:53:17 UTC
 +++ MathMod.pro
 @@ -58,7 +58,6 @@ FORMS     = ui_forms/drawingoptions.ui \
  			 
  RC_FILE 	= mm.rc
  RESOURCES  += myressources.qrc
 -LIBS += -lopengl32
  QT         += opengl widgets
  
  OTHER_FILES += \
+@@ -67,10 +66,10 @@ OTHER_FILES += \
+ 			mathmodconfig.js
+ 
+ # install
+-target.path    = $TARGET
++target.path    = $$INSTALL_ROOT/$$PREFIX/bin/
+ sources.files  = $$SOURCES $$HEADERS $$RESOURCES $$FORMS mathmod.pro
+ sources.path   = $TARGET
+-INSTALLS      += target sources
++INSTALLS      += target
+ 
+ DISTFILES += \
+     advancedmodels.js