[GRASS-dev] running with GISBASE as a symlink?

[William Kyngesburye]

On Dec 19, 2006, at 10:27 PM, Hamish wrote:

> I took the following to mean that it included the GRASS plugin, not  
> that
> it included functional copies of the ported modules + minimum  
> framework to
> allow those to run.
>
>  1 All packages contain GRASS support unless otherwise indicated.
>

I took a look at the qgis.org Qgis, and it appears to me like the  
grass libs in the package are just for library linking for the GRASS  
plugin/provider.  A couple things that are normally found in the  
GRASS etc folder are missing for QGis to consider this a "GISBASE".

>
> some more tests:
>
> * creating a shorcut on the desktop to GRASS.app/Resources/ then  
> pointing
>  QGIS's GISBASE file dialog to that gets you started, but it fails  
> when you
>  try and run a module (eg v.buffer)
>
Might be the DYLD_LIBRARY_PATH problem again.  Or PATH missing the  
GRASS bin and scripts folders.

> * v.buffer works ok if QGIS was started from the GRASS terminal  
> prompt.
>

> sometimes when reclosing mapset I get this error:
>   Cannot close mapset. Cannot remove map set lock: /.../ 
> $MAPSET/.gislock
>
> and in the term window:
>   dyld: Library not loaded: /usr/local/grass-6.2.1/lib/ 
> libgrass_gproj.dylib
>   Referenced from: /Apps/GRASS.app/.../r.in.gdal
>   Reason: image not found
>
>
> I've never had GRASS in /usr/local/ on that machine...
>
That would be the DYLD_LIBRARY_PATH problem.  Without the full GRASS  
environment, GRASS commands can't find the GRASS libraries - it's  
trying the original build location.  Perhaps Qgis needs to do more  
environment setup, like GRASS does in init.sh?

> I tried setting "export LD_LIBRARY_PATH=$GISBASE/lib", no luck.
>
DYLD_LIBRARY_PATH

Looking at the grass init.sh, there are a few environment variables  
that Qgis might need to set, if it doesn't already, based on GISBASE,  
or that you could try from the Terminal as a test:

PATH, to find the GRASS module executables and scripts
DYLD_LIBRARY_PATH, for the libraries
ETC, for support for some modules


-----
William Kyngesburye <kyngchaos at kyngchaos.com>
http://www.kyngchaos.com/

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