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Date: Tue, 10 Feb 2015 12:44:03 -0500
From: Ken Brown <kbrown AT cornell DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: Emacs and last libpng release
References: <54DA37E4 DOT 1060706 AT alice DOT it>
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On 2/10/2015 11:55 AM, Angelo Graziosi wrote:
> Ken Brown wrote:
>> I think the better way is for all libraries that rely on libpng15 to rebuild
>> for libpng16.
>
> Does this mean that there is some library which, after being rebuilt, will allow
> Emacs to be build OB, linking to libpng16, without the need to install libpng15?

I think that's right.  It looks to me like ImageMagick and fontconfig are both 
adding -lpng15 to the link command line.  I'm puzzled about fontconfig because 
it was just rebuilt.

$ pkg-config --libs fontconfig
-lfontconfig -lexpat -lfreetype -lbz2 -lz -lpng15 -lm -lz -lexpat -lfreetype 
-lbz2 -lz -lpng16 -lm -lz

Yaakov, can you explain this?

Ken

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