Index: x11-toolkits/gtk30/Makefile
===================================================================
--- x11-toolkits/gtk30/Makefile
+++ x11-toolkits/gtk30/Makefile
@@ -43,7 +43,6 @@
 USE_XORG=	xext xrender x11 xinerama xi xrandr xcursor xfixes xdamage \
 		xcomposite
 CONFIGURE_ARGS=	--enable-x11-backend \
-		--disable-wayland-backend \
 		--enable-introspection
 CPPFLAGS+=	-fno-omit-frame-pointer
 INSTALLS_ICONS=	yes
@@ -57,10 +56,17 @@
 		org.gtk.Settings.Debug.gschema.xml \
 		org.gtk.Settings.FileChooser.gschema.xml
 
-OPTIONS_DEFINE=	CUPS CLOUDPRINT COLORD DEBUG BROADWAY
+OPTIONS_DEFINE=	CUPS CLOUDPRINT COLORD DEBUG BROADWAY WAYLAND
 OPTIONS_DEFAULT=CUPS COLORD BROADWAY
 OPTIONS_SUB=	yes
 
+WAYLAND_DESC=	Enable Wayland backend
+WAYLAND_LIB_DEPENDS= libwayland-client.so:graphics/wayland \
+					 libwayland-egl.so:graphics/mesa-libs
+WAYLAND_BUILD_DEPENDS= wayland-protocols>=1.7:graphics/wayland-protocols \
+					   wayland-scanner:graphics/wayland
+WAYLAND_CONFIGURE_ENABLE= wayland-backend
+
 BROADWAY_DESC=	Enable GDK Broadway backend for showing GTK+ in the webbrowser using HTML5 and web sockets.
 BROADWAY_CONFIGURE_ENABLE=	broadway-backend
 
@@ -83,12 +89,17 @@
 	@${REINPLACE_CMD} -e 's|[{]libdir[}]/locale|{datadir}/locale|g' \
 		${WRKSRC}/configure
 
+# Should not have to do this. "make" should find them in $WAYLAND_PROTOCOLS_DATADIR set by automake...
+WAYLAND_PROTOCOLS_DATADIR=`pkg-config --variable=pkgdatadir wayland-protocols`
+
 pre-configure:
 # .if !exists() evaluates too early before cairo has a chance to be installed
 	@if ! pkg-config --exists cairo-xlib; then \
 		${ECHO_MSG} "${PKGNAME}: Needs cairo with X11 support enabled."; \
 		${FALSE}; \
 	fi
+	@cp ${WAYLAND_PROTOCOLS_DATADIR}/stable/*/* ${WRKSRC}/gdk/wayland/protocol/
+	@cp ${WAYLAND_PROTOCOLS_DATADIR}/unstable/*/* ${WRKSRC}/gdk/wayland/protocol/
 
 pre-build:
 	@${RM} -r ${WRKSRC}/docs/gtk.info*
Index: x11-toolkits/gtk30/pkg-plist
===================================================================
--- x11-toolkits/gtk30/pkg-plist
+++ x11-toolkits/gtk30/pkg-plist
@@ -58,8 +58,14 @@
 include/gtk-3.0/gdk/gdktypes.h
 include/gtk-3.0/gdk/gdkversionmacros.h
 include/gtk-3.0/gdk/gdkvisual.h
+%%WAYLAND%%include/gtk-3.0/gdk/gdkwayland.h
 include/gtk-3.0/gdk/gdkwindow.h
 include/gtk-3.0/gdk/gdkx.h
+%%WAYLAND%%include/gtk-3.0/gdk/wayland/gdkwaylanddevice.h
+%%WAYLAND%%include/gtk-3.0/gdk/wayland/gdkwaylanddisplay.h
+%%WAYLAND%%include/gtk-3.0/gdk/wayland/gdkwaylandglcontext.h
+%%WAYLAND%%include/gtk-3.0/gdk/wayland/gdkwaylandselection.h
+%%WAYLAND%%include/gtk-3.0/gdk/wayland/gdkwaylandwindow.h
 include/gtk-3.0/gdk/x11/gdkx-autocleanups.h
 include/gtk-3.0/gdk/x11/gdkx11applaunchcontext.h
 include/gtk-3.0/gdk/x11/gdkx11cursor.h
@@ -434,10 +440,12 @@
 libdata/pkgconfig/gail-3.0.pc
 libdata/pkgconfig/gdk-3.0.pc
 %%BROADWAY%%libdata/pkgconfig/gdk-broadway-3.0.pc
+%%WAYLAND%%libdata/pkgconfig/gdk-wayland-3.0.pc
 libdata/pkgconfig/gdk-x11-3.0.pc
 libdata/pkgconfig/gtk+-3.0.pc
 %%BROADWAY%%libdata/pkgconfig/gtk+-broadway-3.0.pc
 libdata/pkgconfig/gtk+-unix-print-3.0.pc
+%%WAYLAND%%libdata/pkgconfig/gtk+-wayland-3.0.pc
 libdata/pkgconfig/gtk+-x11-3.0.pc
 man/man1/gtk-query-immodules-3.0.1.gz
 share/aclocal/gtk-3.0.m4