Index: head/net-im/telegram-desktop/Makefile
===================================================================
--- head/net-im/telegram-desktop/Makefile	(revision 479025)
+++ head/net-im/telegram-desktop/Makefile	(revision 479026)
@@ -1,113 +1,122 @@
 # $FreeBSD$
 
 PORTNAME=	telegram-desktop
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.3.14
 CATEGORIES=	net-im
 
 MAINTAINER=	henry.hu.sh@gmail.com
 COMMENT=	Telegram Desktop messaging app
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	dee>0:devel/dee \
 		gyp:devel/py-gyp@${PY_FLAVOR} \
 		range-v3>0:devel/range-v3 \
 		pulseaudio>0:audio/pulseaudio \
 		alsa-lib>0:audio/alsa-lib
 LIB_DEPENDS=	libavformat.so:multimedia/ffmpeg \
 		libdbus-1.so:devel/dbus \
 		libminizip.so:archivers/minizip \
 		libopenal.so:audio/openal-soft \
 		libopus.so:audio/opus
 
 USES=		compiler:c++17-lang cmake:noninja,outsource desktop-file-utils gmake pkgconfig python:2.7,build qt:5 ssl
 USE_GITHUB=	yes
 GH_ACCOUNT=	telegramdesktop
 GH_PROJECT=	tdesktop
 GH_TUPLE=	catchorg:Catch2:5ca44b68:catch/Telegram/ThirdParty/Catch \
 		mapbox:variant:550ac2f:variant/Telegram/ThirdParty/variant \
 		Microsoft:GSL:d846fe5:gsl/Telegram/ThirdParty/GSL \
 		telegramdesktop:libtgvoip:bfa1e6a:libtgvoip/Telegram/ThirdParty/libtgvoip \
 		telegramdesktop:crl:527ad27:crl/Telegram/ThirdParty/crl
 USE_GNOME=	glib20
 USE_QT=		core gui imageformats network widgets buildtools_build qmake_build dbus
 USE_XORG=	x11 xcb
 INSTALLS_ICONS=	yes
 
 CMAKE_SOURCE_PATH=	${WRKSRC}/out/Release
 
 GYP_DEFINES=	TDESKTOP_DISABLE_CRASH_REPORTS,TDESKTOP_DISABLE_AUTOUPDATE,TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
 
 # Telegram uses OpenAL for its audio, but libtgvoip (for voice calls) can use PulseAudio or ALSA.
 # It dynamically loads PulseAudio, and if this fails, it loads ALSA.
 # If both of them are not installed, then voice calls do not work, but other functionalities still work.
 OPTIONS_MULTI=	AUDIO
 OPTIONS_MULTI_AUDIO=	ALSA PULSEAUDIO
 OPTIONS_DEFINE=	GTK
 OPTIONS_DEFAULT=	ALSA
 
 AUDIO_DESC=	Audio backend for voice calls
 GTK_DESC=	Gtk integration (Use Gtk dialogs, etc.)
 
 ALSA_LIB_DEPENDS=	libasound.so:audio/alsa-lib
 PULSEAUDIO_LIB_DEPENDS=	libpulse.so:audio/pulseaudio
 
 .include <bsd.port.options.mk>
 
 .if ${PORT_OPTIONS:MGTK}
 USE_GNOME+=	gtk30
 .else
 GYP_DEFINES:=	${GYP_DEFINES},TDESKTOP_DISABLE_GTK_INTEGRATION
 .endif
 
 .include <bsd.port.pre.mk>
 
+
+# This port needs C++17 libs/compiler.
+# Currently, this is not supported by USES=compiler
+# Using clang does not work: libc++ in base does not support C++17.
+# Using gcc does not work: using both libc++ and libstdc++ causes crashes.
+.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1100000
+BROKEN=		Need C++17 support in compiler and runtime
+.endif
+
 # Since 1.3.14, the clang compiler provided in 11.1 (4.0.0) gets a segmentation
 # fault.
 .if ${OPSYS} == FreeBSD && ${OSVERSION} < 1102000
 CXXFLAGS+=	-DGSL_USE_STD_BYTE=0
 QMAKE_COMPILER=	clang
 .endif
 
 post-patch:
 	@cd ${WRKSRC} && \
 		(${SED} -e " \
 			s|%%QT_VERSION%%|${QT5_VERSION}| ; \
 			s|%%LOCALBASE%%|${LOCALBASE}| ; \
 			s|%%CFLAGS%%|${CFLAGS:C/(.*)/'\1',/}| ; \
 			s|%%CXXFLAGS%%|${CXXFLAGS:C/(.*)/'\1',/}| ; \
 			s|%%LDFLAGS%%|${LDFLAGS:C/(.*)/'\1',/}| ; \
 			s|%%QT_BINDIR%%|${QT_BINDIR}| ; \
 			s|%%QT_INCDIR%%|${QT_INCDIR}| ; \
 			s|%%QT_LIBDIR%%|${QT_LIBDIR}| ; \
 			s|%%QMAKESPEC%%|${QMAKESPEC}| ; \
 			s|%%PYTHON_CMD%%|${PYTHON_CMD}|" \
 		${FILESDIR}/gyp-patches | \
 		${PATCH} -z .bak -s)
 	@${ECHO} "#define FREEBSD_QT_PLUGINDIR \"${QT_PLUGINDIR}\"" > ${WRKSRC}/Telegram/SourceFiles/FREEBSD_QT_PLUGINDIR.h
 
 pre-configure:
 	@cd ${WRKSRC} && gyp \
 	    -Dbuild_defines=${GYP_DEFINES} \
 	    -Gconfig=Release \
 	    --depth=Telegram/gyp --generator-output=../.. -Goutput_dir=out Telegram/gyp/Telegram.gyp --format=cmake
 	@TOT=`wc -l < ${WRKSRC}/out/Release/CMakeLists.txt` && NUM=`expr $$TOT - 2` && \
 	    ${SED} -i -e "$$NUM r ${FILESDIR}/CMakeLists.inj" ${WRKSRC}/out/Release/CMakeLists.txt
 
 do-install:
 	${INSTALL_PROGRAM} ${BUILD_WRKSRC}/Telegram ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
 	${INSTALL_DATA} ${WRKSRC}/lib/xdg/telegramdesktop.desktop ${STAGEDIR}${PREFIX}/share/applications/${PORTNAME}.desktop
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/kservices5
 	${INSTALL_DATA} ${WRKSRC}/lib/xdg/tg.protocol ${STAGEDIR}${PREFIX}/share/kservices5
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/appdata
 	${INSTALL_DATA} ${WRKSRC}/lib/xdg/telegramdesktop.appdata.xml ${STAGEDIR}${PREFIX}/share/appdata/${PORTNAME}.appdata.xml
 .for icon_size in 16 32 48 64 128 256 512
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/icons/hicolor/${icon_size}x${icon_size}/apps
 	${INSTALL_DATA} \
 		${WRKSRC}/Telegram/Resources/art/icon${icon_size}.png \
 		${STAGEDIR}${PREFIX}/share/icons/hicolor/${icon_size}x${icon_size}/apps/${PORTNAME}.png
 .endfor
 
 .include <bsd.port.post.mk>