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Date: Sun, 22 Jan 2012 11:17:36 -0600 (CST)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Jay Berkenbilt <ejb@ql.org>
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Cc: Tiff List <tiff@lists.maptools.org>
Subject: Re: [Tiff] update on tiff 4.x in debian
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On Sun, 22 Jan 2012, Jay Berkenbilt wrote:

> In case anyone's interested in the status of tiff 4.x in debian, I'll
> provide an update.  Based on lessons learned with similar transitions to
> the png and jpeg libraries, it basically isn't going to happen unless
> the tiff library versions its symbols.  Without symbol versioning in the

Bummer.  I will look into doing this based on the approach used for 
libjpeg.  It would have been good if this had been implemented prior 
to the 4.0.0 release.  Now we are faced with the situation that an 
application built against a libtiff which does not use versioned 
symbols will stop working if a libtiff which uses versioned symbols is 
inserted in its place.  A defense against that is to increment 
'current' and leave 'age' set to zero for the newer library since the 
whole interface has changed.  I am not particularly religious about 
library file names but others may be disturbed by such changes.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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