[GRASS-user] Re: compiling grass 64bit under vista?

Milton Cezar Ribeiro miltinho.astronauta at gmail.com
Thu Jan 21 01:33:14 EST 2010

Dear Helmut and Markus

I checked out the Helmut's suggestion, and in fact are there a MinGW-w64
that is a mix between 32-64b. I think it is a very promising solution for
windows-based users, mainly because many of new computers that we buy for
GIS end-users area, in general, with large memory (4Gb+) and 64bit.

But as Helmut advice, I can get in trouble if we mix 32 & 64b.
Addictionally, I have no idea of how many users compile grass from source
under MSYS/Windows using the easy-to-follow and valuable intructions found
at http://trac.osgeo.org/grass/wiki/CompileOnWindows
I think rare people will be able to bypass the difficulties of try compile
grass under windows using other configurations/libs different from the
instructions above. So, if someone feel confortable to try, and could
prepare a *CompileOnWindowsW64 *it will be great.

By the way, the new python-based grass7 will still have the same limitations
under windows (not use LFS and only run as 32b)?


2010/1/19 Helmut Kudrnovsky <hellik at web.de>

> hi,
> >Dear all,
> >
> >I have used grass under Vista, and compiled it using
> >Msys/OSgeo4W version. If I am not wrong I will get only
> >a 32bit grass, because Msys/gcc and some of libs downloadable
> >from the links http://trac.osgeo.org/grass/wiki/CompileOnWindows
> >deal with 32bit instead 64.
> >
> >Is there a way of I prepare and environment under Vista to
> >compile it with 64b? May be someone could help
> >to preparar a *CompileOnWindows64* :-)
> >
> >Any hint are welcome.
> there seems to be a working mingw64-environment:
> http://sourceforge.net/projects/mingw-w64/
> "The mingw-w64 project is a complete runtime environment for gcc to support
> binaries native to Windows 64-bit and 32-bit operating systems. "
> maybe mixing 32bit-dependecies from osgeo4w and 64bit GRASS isn't a very
> good idea,
> so maybe it would be necessary to build a new 64bit building environment
> with mingw64
> and 64bit dependecies like gdal, proj, tcltk, etc.
> but it would be a nice idea ... :o)
> best regards
> Helmut
> ___________________________________________________________
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