Index: Makefile
===================================================================
--- Makefile	(revision 481501)
+++ Makefile	(working copy)
@@ -29,7 +29,7 @@
 PLIST_SUB+=	PLIST_QT_PREFIX_UPCASE=Qt PLIST_QT_PREFIX=qt
 PLIST=		${PKGDIR}/pkg-plist.${FLAVOR}
 .  else
-USES+=		qt:5
+USES+=		compiler:c++11-lang qt:5
 USE_QT=		core dbus linguisttools_build buildtools_build qmake_build
 PLIST_SUB+=	PLIST_QT_PREFIX_UPCASE=Qt5 PLIST_QT_PREFIX=qt5
 PLIST=		${PKGDIR}/pkg-plist.${FLAVOR}