Hello list,
I had a bad surprise today using the new gdal 1.8 package available in
ubuntugis-unstable :
When linked both to tiff v3 and gdal 1.8, the GTIFF driver is disabled
with a warning appearing like :
WARNING ! libtiff version mismatch : You're linking against libtiff
3.X but GDAL has been compiled against libtiff >= 4.0.0
I understand from frmts/gtiff/geotiff.cpp that this is voluntary (though
the warning does not say it actually disables the GTiff driver).
In my case (building the Orfeo Toolbox library, which has a dependency
needing TIFF and GeoTiff, but not gdal), it has the undesirable
consequence of breaking TIFF support for our ubuntu packages based on
the ubuntugis-unstable ppa
(https://launchpad.net/~otb/+archive/orfeotoolbox-nightly and
https://launchpad.net/~otb/+archive/orfeotoolbox-stable-ubuntugis).
The issue has already been discussed on this list, but just to recall :
we had a solution providing usable executables with TIFF support, even
though they were linked to the system libtiff and libgeotiff (it
involved ensuring the proper link order between '-lgdal' and '-lgeotiff').
That's why I think disabling the driver completely is a little hard.
In my case it represents a major regression, and I don't have a lot of
ideas to work around it...
Is it possible to *not* disable the driver, and keep the warning ?
Regards,
Julien
NB: I filed a ticket in our bug tracker
(http://bugs.orfeo-toolbox.org/view.php?id=296), feel free to leave
comments there.
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