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Date: Sun, 19 Nov 2006 16:12:35 -0500
From: Frank Warmerdam <warmerdam@pobox.com>
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To: Paul Surgeon <surgpm@cybersmart.co.za>
Subject: Re: [Tiff] tiffinfo large file issue
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Status: RO

Paul Surgeon wrote:
> On Sunday 19 November 2006 22:12, Frank Warmerdam wrote:
>> Paul,
>>
>> It depends on how libtiff is built whether it will support files larger
>> than 2GB.  As Bob mentions 3.7.4 is old, but I'm sure even 3.7.4 can
>> support large files if built properly.  It might be appropriate to
>> contact whoever built the binaries about updating, and looking into how
>> to build with large file support.
>>
>> Best regards,
> 
> It's not a large file support issue - it works fine on some files larger than 
> 3GiB but not others and I have no idea why not.
> I just built 3.8.2 and it does exactly the same.
> 
> listgeo suffers the same problem.

Paul,

My guess would be that it works on files where the directory data is
before the 2GB mark.  If you are convinced there is more to it than this
then we can try and dig into it.  We would need to know various
details about operating system, config.log results (for libtiff) and so
forth.  Basically we would need to determine what underlying functions
are getting used for stdio.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org

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