From owner-freebsd-ports@freebsd.org  Sat Jul 23 06:03:10 2016
Return-Path: <owner-freebsd-ports@freebsd.org>
Delivered-To: freebsd-ports@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id AA2B6BA107F
 for <freebsd-ports@mailman.ysv.freebsd.org>;
 Sat, 23 Jul 2016 06:03:10 +0000 (UTC)
 (envelope-from w.schwarzenfeld@utanet.at)
Received: from taro-2.utanet.at (taro.utanet.at [IPv6:2001:938:1337:25::25:45])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 61EB3189B
 for <freebsd-ports@freebsd.org>; Sat, 23 Jul 2016 06:03:09 +0000 (UTC)
 (envelope-from w.schwarzenfeld@utanet.at)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=utanet.at;
 s=rev1; 
 h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:Subject:References:To;
 bh=44PutBHR7iRdmDMvlGQLqMWL6Mi1ft/DHuJ91jiyCVY=; 
 b=WDBm+AfieEkZ63FVlbnZcKjA8IhDqdn4UmZ2a3AayuFwtCbjaqWrbg5AJaZuHG9fE+8Ymn3OIY/HBhFWnWqe5MmpAuQBcOxHF4eSgBRNU9TxehK5RMNuNlVL0Pq/QNdV4eSkUh1rZlYC618PXRqESJI372HtBN5l0I7Zvo0zzJw=;
Received: from patricia.xoc.tele2net.at ([213.90.36.9])
 by taro.utanet.at with esmtp (Exim 4.80)
 (envelope-from <w.schwarzenfeld@utanet.at>) id 1bQq1e-00025g-VQ
 for freebsd-ports@freebsd.org; Sat, 23 Jul 2016 08:03:02 +0200
Received: from 91-115-92-122.adsl.highway.telekom.at ([91.115.92.122]
 helo=[10.0.0.93])
 by patricia.xoc.tele2net.at with esmtpsa (TLSv1:DHE-RSA-AES128-SHA:128)
 (Exim 4.80) (envelope-from <w.schwarzenfeld@utanet.at>)
 id 1bQq1e-0002Cg-TT
 for freebsd-ports@freebsd.org; Sat, 23 Jul 2016 08:03:02 +0200
To: freebsd-ports@freebsd.org
References: <58043eb1-4603-02c7-a8d6-fdd2acb4802e@zyxst.net>
Subject: Re: stunnel fails to build
From: Walter Schwarzenfeld <w.schwarzenfeld@utanet.at>
Message-ID: <3f697c6c-8f34-7174-6c54-e503eb936236@utanet.at>
Date: Sat, 23 Jul 2016 08:03:02 +0200
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101
 Thunderbird/45.2.0
MIME-Version: 1.0
In-Reply-To: <58043eb1-4603-02c7-a8d6-fdd2acb4802e@zyxst.net>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-ports@freebsd.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Porting software to FreeBSD <freebsd-ports.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ports/>
List-Post: <mailto:freebsd-ports@freebsd.org>
List-Help: <mailto:freebsd-ports-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 23 Jul 2016 06:03:10 -0000

found something:

maybe, this could help
remove  or comment out--with-ssl="${OPENSSLBASE}"

and  add to the  Makefile:

CONFIGURE_ENV=	OPENSSL_LIBS="-L${OPENSSLLIB} -lcrypto"
OPENSSL_CFLAGS="-I${OPENSSLINC}"
MAKE_ARGS=	LDFLAGS="${LDFLAGS}"