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From: Jan Beich <jbeich@tormail.org>
To: Eitan Adler <lists@eitanadler.com>
Date: Sat, 28 Jul 2012 19:19:40 -0600
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Cc: Florian Smeets <flo@smeets.im>, Christian Weisgerber <naddy@mips.inka.de>,
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Subject: Re: Firefox 14 build broken due to wrong libpng
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Eitan Adler <lists@eitanadler.com> writes:

> On 28 July 2012 01:59, Florian Smeets <flo@smeets.im> wrote:
>
>> P.S. We really need a way of depending on ports being built with certain
>> OPTIONS.
>
> Slave ports.

In this case APNG has both compatible ABI and Mozilla looking into its
security. For stubborn people there is an undocumented way, e.g.

  # add to make.conf or Makefile.local
  USE_MOZILLA += -png

Slaving away for a library flavor is not in my TODO. Don't forget there
are people against having two versions of the same library in memory.

> FWIW, pkgng does track options but there is no *.mk magic to take
> advantage of this yet.
>
>   $ tar xOf png-1.5.12.txz --include +MANIFEST | fgrep -i opt
>   options: {APNG: on}