From owner-freebsd-ports@freebsd.org  Wed Jun 15 18:27:04 2016
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To: "ports@freebsd.org" <ports@freebsd.org>
From: Yuri <yuri@rawbw.com>
Subject: USES=compiler:c++14-lang still adds -std=c++11 to CXXFLAGS
Cc: portmgr@FreeBSD.org
Message-ID: <68938eb6-daef-7300-526a-1b501af51bf2@rawbw.com>
Date: Wed, 15 Jun 2016 11:26:57 -0700
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I have a port that needs c++14. USES statements are like this:

USES=        compiler:c++14-lang gmake qmake
USE_QT5= core gui network

Yet, compiler command lines still have -std=c++11, and build fails 
because of the lack of c++14 support.

What is wrong? I think this is a bug in /usr/ports/Mk/Uses/compiler.mk


Yuri