[gdal-dev] driver paths - either/or

[Frank Warmerdam]

William Kyngesburye wrote:
> I just noticed that when setting GDAL_DRIVER_PATH in the environment, it 
> overrides the paths configured into GDAL, instead of adding to those 
> paths.  Was this intentional?  Any way to tell GDAL to *add* 
> GDAL_DRIVER_PATH to the configured paths?
> 
> I want to override the installed GRASS plugin when starting up GRASS to 
> point to a version compatible with the GRASS being started.
> 
> ie:
> 
> installed plugin: gdal_ & ogr_GRASS v6.4
> also installed as a plugin: gdal_ECW_JP2ECW
> 
> GDAL_DRIVER_PATH=/path/to/GRASS-6.5/lib/gdalplugins (gdal_ & ogr_GRASS 
> v6.5)
> 
> So, the v6.5 plugin is loaded, but now I don't have my ECW plugin.

William,

There is no way to ask that GDAL_DRIVER_PATH be added to the default
path, but it can hold a list of directories so you can supply the new
directory and the old directories.

eg.
GDAL_DRIVER_PATH=path/to/GRASS-6.5/lib/gdalplugins:/path/to/normal/gdal/plugins




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