[gdal-dev] JPEG2000 question/issue

[Christiaan Janssen]

Actually, I want the MrSID library to handle JPG2000 instead of the ECW library, while still maintaining support for standard ECW files. I think what your describing would be the opposite.

Christiaan 

-----Original Message-----
From: Frank Warmerdam [mailto:warmerdam at pobox.com] 
Sent: Monday, October 27, 2008 11:24 AM
To: Christiaan Janssen
Cc: gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] JPEG2000 question/issue

Christiaan Janssen wrote:
> I'm wondering if someone can help me with this. I'm trying to build 
> GDAL with both support for MrSID and ECW while using the former for 
> JPEG2000 support. It appears that as soon as libecw is linked in, it 
> is being used as the JPEG2000 reader (even when I have MRSID_FLAGS = 
> -DMRSID_J2K uncommented in the make options). I'm assuming this 
> probably has something to do with the order that the drivers are tried 
> at runtime. Is there a correct way to force the support to default to 
> the MrSID library? Thanks for the help.

Christiaan,

Disabling the -DMRSID_J2K should disable the JP2MRSID driver though you may need to do a clean build for the change in the nmake.opt to take effect.

Alternatively you can force a particular driver to be ignored at runtime using the GDAL_SKIP configuration variable.  Set it to the driver name you want to ignore ... such as JP2MRSID.

It can be set in the environment, before running GDAL commands.

set GDAL_SKIP=JP2MRSID

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent