Created attachment 197456 [details]
USES=compiler:c++11-lang is necessary to compile this port on architectures that still use base GCC.
Tested on powerpc64 and amd64.
Hardware sponsored by IntegriCloud.
A commit references this bug:
Date: Thu Sep 27 22:44:49 UTC 2018
New revision: 480828
Fix build with gcc-based archs.
Tested on powerpc64, amd64.
Submitted by: Piotr Kubaj
Approved by: portmgr (tier-2 blanket)