[GRASS5] i.rectify and large files

Wolf Bergenheim wolf+grass at bergenheim.net
Fri Apr 7 05:11:28 EDT 2006

Hash: SHA1

Calmly replying to myself.

All I had to do was add
#define _FILE_OFFSET_BITS 64
to the beginning of the file. Now it seems to work. This is probably not 
the best way to do it, so if someone can tell me the correct way to do 
this, I will fix it, and then commit changes to the CVS (time I 
contributed something back again).

- --Wolf

On Fri, 7 Apr 2006, Wolf Bergenheim wrote:

> Hi all!
> I'm having trouble with the i.rectify and my (quite large) TIFF image.
> when I run i.rectify it stops with
> ERROR: error while writing to temp file
> I added some debug messages and see that it fails because the temp file is
> larger then 2 GB. I reconfigured GRASS with both --enable-largefile and
> --enable-64bit, but no help. Looking more closely at i.rectify I see that
> it uses open(temp_name, 0) to open the temp file. Okay so the problem is
> probably here, on line 56 in file write.c of i.rectify. I tried to add the
> O_LARGEFILE flag, but now it doesn't get compiled as I'm not able to
> convince the compiler that I want to have large file support for this code
> as well. What can I do? Is there perhaps some GRASS lib function to open
> possibly large files?
> --Wolf
> --
> <: 3 )---- Wolf Bergenheim ----( 8:>

- -- 

<:3 )---- Wolf Bergenheim ----( 8:>

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