Index: head/net-im/chatterino2/Makefile
===================================================================
--- head/net-im/chatterino2/Makefile	(revision 546925)
+++ head/net-im/chatterino2/Makefile	(revision 546926)
@@ -1,72 +1,72 @@
 # $FreeBSD$
 
 PORTNAME=	chatterino2
 PORTVERSION=	g2020082701
 CATEGORIES=	net-im
 
 MAINTAINER=	swills@FreeBSD.org
 COMMENT=	Twitch chat client
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	rapidjson>0:devel/rapidjson
 LIB_DEPENDS=	libboost_system.so:devel/boost-libs \
 		libqt5keychain.so:security/qtkeychain
 
-USES=		gl pkgconfig qmake qt:5 ssl
+USES=		compiler:c++17-lang gl pkgconfig qmake qt:5 ssl
 USE_QT=		concurrent core gui multimedia network svg widgets \
 		buildtools_build qmake_build
 USE_GL=		gl
 
 OPTIONS_DEFINE=	DOCS
 
 DESKTOP_ENTRIES=	"Chatterino" \
 			"" \
 			"chatterino" \
 			"chatterino" \
 			"Network;InstantMessaging;" \
 			""
 
 PLIST_FILES=	bin/chatterino \
 		share/appdata/com.chatterino.chatterino.appdata.xml \
 		share/icons/hicolor/256x256/apps/chatterino.png
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	chatterino
 GH_TAGNAME=	279a80b
 GH_TUPLE=	Chatterino:libcommuni:f3e7f97:communi/lib/libcommuni \
 		pajlada:humanize:1386737:humanize/lib/humanize \
 		pajlada:serialize:86bfa5a:serialize/lib/serialize \
 		pajlada:settings:4fe0ff9:settings/lib/settings \
 		pajlada:signals:6665cca:signals/lib/signals \
 		ziocleto:websocketpp:1e0138c:websocketpp/lib/websocketpp
 
 QMAKE_ENV=	GIT_COMMIT=${GH_TAGNAME} \
 		GIT_RELEASE=${DISTVERSIONPREFIX}${PORTVERSION}
 QMAKE_ARGS=	INCLUDEPATH+=${LOCALBASE}/include/qt5keychain \
 		LIBS+=-lqt5keychain PREFIX=${STAGEDIR}${PREFIX} \
 		RAPIDJSON_SYSTEM=1
 
 PORTDOCS=	README.md docs/Commands.md docs/ENV.md docs/IMAGEUPLOADER.md \
 		docs/README.md docs/Regex.md
 
 PORTSCOUT=	skipv:v2.1.7,v2.1.0,v2.0.4,v2.0.3,v2.0.2,v2.0.1,v2.0.0
 
 post-extract:
 	@${RM} ${WRKSRC}/lib/qtkeychain.pri
 
 post-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/chatterino ${STAGEDIR}${PREFIX}/bin/
 	${MKDIR} ${STAGEDIR}${PREFIX}/share/icons/hicolor/256x256/apps/ ${STAGEDIR}${PREFIX}/share/appdata/
 	${INSTALL_DATA} ${WRKSRC}/resources/icon.png ${STAGEDIR}${PREFIX}/share/icons/hicolor/256x256/apps/chatterino.png
 	${INSTALL_DATA} ${WRKSRC}/resources/com.chatterino.chatterino.appdata.xml ${STAGEDIR}${PREFIX}/share/appdata/
 
 post-install-DOCS-on:
 	${MKDIR} ${STAGEDIR}${DOCSDIR}/docs
 	${INSTALL_DATA} ${WRKSRC}/README.md ${STAGEDIR}${DOCSDIR}/
 .for DOC in docs/Commands.md docs/ENV.md docs/IMAGEUPLOADER.md docs/README.md docs/Regex.md
 	${INSTALL_DATA} ${WRKSRC}/${DOC} ${STAGEDIR}${DOCSDIR}/docs
 .endfor
 
 .include <bsd.port.mk>