Hi

It is not difficult to compile a 64bit windows version, since most of the dependencies are available from gisinternals( http://www.gisinternals.com/sdk/ ).
The difficulty is more in the detail:
- GRASS : I don't have experience with compilation for 64bit
- Formats like sid, ecw
- Interlis support (important here in Switzerland)

Therefore I think it would be best if osgeo4w could have a 64bit version.

Regards,
Marco

On 16.11.2012 08:49, Bernhard Ströbl wrote:
Hi Andreas,

thanks for the move. We would definitely be interested in a Win64 bit version sometime next year.

Bernhard

Am 16.11.2012 08:39, schrieb Andreas Neumann:
Hi all,

Wouldn't it be good to offer 64bit Windows versions from QGIS version
2.0 on? Most new and many existing Windows PCs are 64bit Windows these
days.

I don't expect someone to work for free on it, but if an estimate could
be done how many hours of work it would mean to put together a 64bit
OSGeo4W and standalone viewer, we could start collecting money to make
it happen. There should be enough Windows users out there with a strong
interest in the 64bit version.

Question: is this more a one-time investment or would it mean a lot of
work further on, maintaining the two versions, 32bit and 64bit?

Other opinions?

Andreas




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