From owner-freebsd-doc@FreeBSD.ORG  Thu Apr 12 22:25:34 2012
Return-Path: <owner-freebsd-doc@FreeBSD.ORG>
Delivered-To: freebsd-doc@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id C625D106566B;
	Thu, 12 Apr 2012 22:25:34 +0000 (UTC)
	(envelope-from makc@freebsd.org)
Received: from mail.issp.ac.ru (mail.issp.ac.ru [77.236.34.3])
	by mx1.freebsd.org (Postfix) with ESMTP id 2AAC98FC0A;
	Thu, 12 Apr 2012 22:25:33 +0000 (UTC)
Received: from dev018-200.eduroam.manchester.ac.uk [194.66.18.200:29595]
	(HELO/EHLO mercury.ph.man.ac.uk, authenticated with LOGIN)
	by mail.issp.ac.ru with ESMTP/inet id q3CMPYmQ086496 (using TLSv1/SSLv3,
	with cipher DHE-RSA-AES256-SHA (256 bits), verified NO)
	Fri, 13 Apr 2012 02:25:35 +0400 (MSK)
From: Max Brazhnikov <makc@freebsd.org>
To: freebsd-doc@freebsd.org
Date: Thu, 12 Apr 2012 22:26:35 +0000
User-Agent: KMail/1.13.7 (FreeBSD/9.0-STABLE; KDE/4.8.2; amd64; ; )
References: <201204111833.q3BIXILU034322@red.freebsd.org>
In-Reply-To: <201204111833.q3BIXILU034322@red.freebsd.org>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="us-ascii"
Content-Transfer-Encoding: 7bit
Message-Id: <201204122226.36290.makc@freebsd.org>
Cc: freebsd-gnats-submit@freebsd.org,
	"A.J. Kehoe IV \(Nanoman\)" <zxMbzY3e@nanoman.ca>
Subject: Re: docs/166855: [patch] Automatic Detection of Dependencies
	Addendum for Porter's Handbook
X-BeenThere: freebsd-doc@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Documentation project <freebsd-doc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-doc>,
	<mailto:freebsd-doc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-doc>
List-Post: <mailto:freebsd-doc@freebsd.org>
List-Help: <mailto:freebsd-doc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-doc>,
	<mailto:freebsd-doc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 12 Apr 2012 22:25:34 -0000

On Wed, 11 Apr 2012 18:33:18 GMT, A.J. Kehoe IV (Nanoman) wrote:
> +       <example>
> +         <title>Correct Declaration of an Optional Dependency</title>
> +
> +         <programlisting>OPTIONS=              BAR     "Enable bar support" on
> +
> +.include &lt;bsd.port.pre.mk&gt;
> +
> +.if defined(WITH_BAR) && !defined(WITHOUT_BAR)
> +LIB_DEPENDS=   bar:${PORTSDIR}/foo/bar
> +.endif</programlisting>
> +       </example>

It's not enough. You also need to add something like --disable-bar to configure arguments and of course configure script should respect the switch.