Created attachment 197773 [details]
USES=compiler:c++11-lang is necessary to build this port when base GCC is present.
Tested on powerpc64 and amd64.
Hardware sponsored by IntegriCloud.
A commit references this bug:
Date: Thu Nov 1 15:29:53 UTC 2018
New revision: 483680
Fix build with GCC-based architectures.
Submitted by: Piotr Kubaj
Approved by: portmgr (tier-2 blanket)