large files in w32

Villalon, Elena villalel at
Fri Nov 18 14:06:41 EST 2011

I have compiled libtiff 4 beta with Mingw/msys, using libjpeg 8, and all the defaults.  I get the libtiff that opens large files (> 2GB) but it truncates the images. It also truncates the images with less than 2GB, and repeats the truncated image like tiles but missing a good part of it. If anybody knows if I am missing a parameter or some other settings please let me know.

-----Original Message-----
From: at [ at] On Behalf Of Benjamin Gilbert
Sent: Monday, November 07, 2011 5:18 PM
To: openslide-users at
Subject: Re: large files in w32

On 11/03/2011 01:52 PM, Villalon, Elena wrote:
> Hello, we have a problem when opening very large files in windows 32. I
> am meaning over 2 GB.

Hi Elena,

By default, libtiff 3 does not support files over 2 GB on Windows.  You 
may have better luck with the latest libtiff 4 beta, or you can build 
libtiff 3 with MSVC and disable USE_WIN_CRT_LIB.

--Benjamin Gilbert
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