[gdal-dev] 32 and 64-bit python bindings concurrently?

[Jay L.]

Evan,

Thanks for the info.  I used universal, purely as a descriptor of the
functionality I was hoping for.  I will have to experiment with installing
GDAL in separate locations to see if I can get both installations to get
along.

Thanks!
Jay

On Mon, Aug 20, 2012 at 12:24 PM, Even Rouault <even.rouault at mines-paris.org
> wrote:

> > A few questions:
> > Can a 64-bit installation of gdal support the 32-bit python bindings, ie
> is
> > a universal binary buildable?
>
> Not sure what you mean by "universal binary" (this is a OSX concept, but
> I'm
> not aware it exists for Windows), but the most general answer is : No
>
> The python bindings contain DLL, that must have the same bit size as the
> GDAL
> core DLL.
>
> A 64bit DLL cannot link with a 32bit DLL, and vice versa.
>
> > Is it possible to support both 32 and 63 bit installations of the python
> > bindings?
>
> If you install them in separate locations, yes
>
> > Does this require both a 32-bit and a 64-bit installation of the
> > gdal core package?
>
> Yes, according to above
>
> > If it is possible to support both, what order do I need to append my path
> > in?  Currently I have the gdal install directory first to avoid dll
> loading
> > issues (from an earlier mail).
>
> I would believe that you can put the paths to the 32bit and 64bit binaries
> and
> that the windows loader will select the right version, but I'm not sure at
> all. That might require confirmation by experimenting
>
> >
> > Thanks,
> > Jay
>
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