[ELGIS] Fwd: libtiff4

[Robert Christian Steinke]

It looks like there are some policy questions and technical issues for using libtiff4 in ELGIS.  For my work I've recompiled gdal and qgis to use libtiff4, so don't worry about me waiting on this.

________________________________________
From: el-bounces at lists.osgeo.org [el-bounces at lists.osgeo.org] on behalf of Peter Hopfgartner [peter.hopfgartner at r3-gis.com]
Sent: Wednesday, December 05, 2012 4:33 AM
To: Mathieu Baudier
Cc: el at lists.osgeo.org
Subject: Re: [ELGIS] Fwd: libtiff4

On 12/05/2012 08:53 AM, Mathieu Baudier wrote:
>>> I think you do need to create a libgeotiff4 that uses libtiff4.  I can
>>> still use gdal, but it won't create BigTIFFs so I assume it is using
>>> libgeotiff-1.3.0, which is still using libtiff-3.9.4.  Will you also
>>> need to recompile all of the applications to use libgeotiff4?
>> Yes, you need to recompile libgeotiff. The same holds true for the
>> applications. Personally, I did this for GDAL and MapServer. libtiff4
>> together with libjpeg-turbo gave us a very powerfull soution for raster
>> data, competing with ECW in terms of speed and space efficiency.
> Then should we say that our stack doesn't use base libtiff but libtiff4?
>
> This would be a significant fork from EPEL (but not from Fedora actually).
> I am not too keen to maintain two GDALs, MapServers, etc.
We should check what impact this has on all non-GIS packages depending
on libtiff, which we should not change, anyways. I can't remember the
details, but IIRC there were some road blockers to have libtiff and
libtiff4 installed on the same machine.
In the end: having libtiff4 and turbo-jpeg in ELGIS would be nice, but I
fear it would need some non trivial work.

>
> What about PostGIS 2.0?
> Since it manages rasters as well I guess it depends on libtiff/geotiff
> as well? Doesn't it?
Yes, it does. It should not be too difficult to adapt our PostGIS
package to 2.0. Personally, I'm using the one from yum.postgresql.org,
since I'm depending on PostgreSQL 9. The PostgreSQL/PostGIS packages on
yum.postgresql.org are more complex, since they support multiple
versions of PostgreSQL on the same machine, so I would not start from them.

Peter

--
Peter Hopfgartner
R3 GIS Srl - GmbH
web  : http://www.r3-gis.com

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