Hi Francesco,
thanks for your feedback
----- Original Message -----
From: "Francesco P. Lovergine" <fran...@debian.org>
To: "Antonio Valentino" <antonio.valent...@tiscali.it>
Cc: <gdal-dev@lists.osgeo.org>
Sent: Monday, September 21, 2009 10:45 AM
Subject: Re: [gdal-dev] Problems with TIFF internal symbols
On Fri, Sep 18, 2009 at 08:55:03AM +0200, Antonio Valentino wrote:
Hi list,
I'm trying to use OTB (Orfeo ToolBox) on Debian Sid with GDAL 1.6.2 and
I get a lot of segmentation fault related to GDAL and TIFF files.
A guy on the OTB mailing list suggested that it could depend on the
"with-hide-internal-symbols" flag used for Debian packages.
See thread
http groups dot google dot com
/group/otb-users/browse_thread/thread/be8ad5e263aafe14
(sorry the spam filter of my ISP keeps blocking this message)
Is the above hypothesis correct?
How can we solve the issue in this case?
Best regards
The only problem found in the past with that option was:
http://svn.debian.org/viewsvn/pkg-grass/packages/gdal/trunk/debian/patches/cpl_dll.dpatch?revision=2232&view=markup
and it was detected at linking time. It seems OTB is misusing the original
TIFF API or exploting
some inner problems of the same library. Note that
If my understanding is correct OTB implements some check at configuration
time in order to determine whenever GDAL exposes TIFF/GeoTIFF simbols or
not.
http://hg.orfeo-toolbox.org/OTB/file/591cba0c0fb0/CMakeLists.txt#l499
At first look the procedure seems to be correct but segmentation faults
arise when the GDAL file reader try to open/create TIFF files (the debugger
stops on the m_hDriver->Create call or so.
I can't figure out why this happens, just I hoped someone more expert than
me could provide some hint.
the geotiff internal gdal library has been used since 1.6.0 in debian, the
old one used the same
library you are now linking with the default configuration. So the
objection seems pointless.
Yes, no problem with GDAL packages of version < 1.6.0.
I'm aware that the change (use of internal libtiff) happened in 1.6.0
packages so I guessed the problem could be related to a bad handling of
libtiff symbols.
I wonder if there is some particular advice on how to build/link client
code.
Best regards
--
Antonio VALENTINO
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