[Numpy-discussion] Is anyone knowledgeable about dll deployment on windows ?

David Cournapeau cournape at gmail.com
Mon Nov 30 08:54:05 EST 2009

On Mon, Nov 30, 2009 at 10:48 PM, Sturla Molden <sturla at molden.no> wrote:
> David Cournapeau skrev:
>> If every python package starts to put its extensions (*.pyd) into a
>> directory, what happens when two different packages have an extension
>> with the same name (e.g. package foo has a package multiarray.pyd) ? I
>> would also be really annoyed if a 3rd party extension starts polluting
>> my C:\Python26.
> In disutils, data_files can install DLLs where Python wants them. Just
> pass 'DLLs' as path, and the rest it up to distutils. If anyone pollutes
> your c:\Python26 it is distutils, not a third party extension. This is
> not any different from installing other data files.

We are talking about the numpy extensions here, which are not
installed through the install_data command. The problem is about how
windows looks for dll with the manifest mechanism, and how to
build/install extensions when the C runtime (or any other "system"
dll) is not installed in the SxS cache.


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