[Qgis-developer] build qgis-grass plugin on Windows

[G. Allegri]

Thanks very much Godofredo.

2009/3/19 godofredo contreras <frdcn at hotmail.com>
>
>
> >Hi Godofredo,
> >thanks for your hints. I'll tru it as soon as possible. In the meanwhile could you help me to >clarify some other related aspects?
> > 1 - how were the various libs you listed built? VS or MinGW. AFAIK they're used both from
> >Grass and QGIS, am I wrong? I thought that Grass couldn't use libs built with VS...
>
> You can look into c:/osgeo4w/lib for files ending with .lib these are the import libraries for msvc. In the case of libmysql.lib, libpq.lib, and the grass import libraries (grass_arraystats.lib, grass_bitmap.lib) is almost sure that they are compiled with msys/mingw and later the import libraries were created with msvc implib tool. This can be done because msys/mingw and msvc compilers are compatible at c level (not compatibles at c++ level) also you can create an import library for msys/mingw from msvc dll using dlltool.
>
> >2 - this is the qgis ml but do you know how grass was built (osgeo4w msys+mnigw would >be ok?) and, related to the previous question, against which libs?
>
> The only way to build grass in windows is using msys/mingw and it should use the msys/mingw libraries.
>
> If you don't need to rebuild grass, the libs and dlls bundled with osgeo4w works correctly to build qgis with grass suport using msvc.
>
> To know exactly what compiler was used for libs in osgeo4w you can try asking in osgeo4w-dev mailing list
>
> Regards
> Godofredo Contreras
>
>
> >Thanks very much for helping to dig in the Windows world :)
>
> >giovanni
>
> 2009/3/18 godofredo contreras <frdcn at hotmail.com>
>
>  Hi Giovanny:
>
> You can use the libs and includes bundled with osgeo4w to build qgis and
> grass plugin.
>
> Using osgeo4w do the following:
>
> install grass from desktop category
> install grass-devel-vc from libs (be sure is the same version that grass )
> install gdal from libs
> install geos from libs
> install sqlite from libs
> install proj from libs
> install xpat from libs
> install gsl from libs
>
> create the environment variable LIB_DIR pointing to c:/osgeo4w and run
> cmakesetup, after that set GRASS_PREFIX to the grass instalation directory
> (something like c:/osgeo4w/apps/grass/gras-6.4.0R3)
>
> And thats all, start compiling with visual studio or nmake
>
> Hope this helps
>
> Regards
> Godofredo Contreras
>
> ________________________________
> Date: Wed, 18 Mar 2009 17:42:13 +0100
> From: giohappy at gmail.com
> To: qgis-developer at lists.osgeo.org
> Subject: [Qgis-developer] build qgis-grass plugin on Windows
>
> Hi. I'm going on with my battle to compile qgis+grass on windows vista... very frustrating!
> I've almost finished to compile grass under mingw, as AFAIK it's the only way to do it. Am I wrong?
> I've built its various dependencies (like GDAL, proj, libtiff, freetype, etc.) under ingw too.
> Now, what to do with QGIS? I know it should be compiled with MSVC, at least it's the way choosen for OSGeo4W stack. So I should rebuild GDAL, and all the rest of the stuff, with MSVC? And, at the end, how to build the grass-qgis plugin? Isn't it a problem having compiled the various parts with different systems?
>
> Ok, I admit, I'm a bit confused working on Windos. Linux is more linear to me! :)
>
> Giovanni
>
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