Looked into the mutter failures, and it turns out they are fixed by
using ports-gcc on base-gcc architectures.
ok?
--Kurt
Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/gnome/mutter/Makefile,v
retrieving revision 1.102
diff -u -p -r1.102 Makefile
--- Makefile 17 Feb 2020 18:58:34 -0000 1.102
+++ Makefile 25 Mar 2020 01:48:16 -0000
@@ -28,6 +28,9 @@ WANTLIB += gtk-3 intl json-glib-1.0 m pa
WANTLIB += pangoft2-1.0 startup-notification-1 xcb xcb-randr xcb-res
WANTLIB += xkbcommon xkbcommon-x11 xkbfile
+COMPILER = base-clang ports-gcc
+COMPILER_LANGS = c
+
MODULES= devel/dconf \
devel/meson \
x11/gnome
