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Date:      Thu, 12 Apr 2012 22:26:35 +0000
From:      Max Brazhnikov <makc@freebsd.org>
To:        freebsd-doc@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
Message-ID:  <201204122226.36290.makc@freebsd.org>
In-Reply-To: <201204111833.q3BIXILU034322@red.freebsd.org>
References:  <201204111833.q3BIXILU034322@red.freebsd.org>
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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.

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