Index: databases/mongodb60/Makefile
===================================================================
--- databases/mongodb60/Makefile
+++ databases/mongodb60/Makefile
@@ -87,6 +87,10 @@
 
 .include <bsd.port.pre.mk>
 
+.if ${OSREL} == "12.3"
+BROKEN=		does not compile on 12.3, libc++ too old
+.endif
+
 ALL_TARGET=	install-core
 
 # This ports is only following the Major Release.