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From:	Tom Roche <Tom_Roche AT pobox DOT com>
To:	cygwin AT cygwin DOT com
Subject:	extending a VS python with cygwin
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Reply-to:	cygwin AT cygwin DOT com, Tom Roche <Tom_Roche AT pobox DOT com>
Date:	Tue, 10 Aug 2010 11:11:21 -0400
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summary: I've got a version of python that I need for other purposes.
I'm trying to build duplicity to use with that python. I'm getting

me AT cygwinBox ~/bin/duplicity-0.6.09$ python setup.py install
...
> error: Python was built with Visual Studio 2003;
> extensions must be built with a compiler than can generate
> compatible binaries. Visual Studio 2003 was not found on this
> system. If you have Cygwin installed, you can try compiling with
> MingW32, by passing "-c mingw32" to setup.py.

How to do this?

details:

I mostly run linux, and I've been using python-based `duplicity`

http://duplicity.nongnu.org/

to back that up. I've got an older winxp box (SP3, uptodate with WU)
which I keep mostly to run ArcGIS, which has happily run many versions
of cygwin (which I keep uptodate) over the years. I'd like to be able to
restore my linux home to my cygwin home for the rare occasions when I
need to use the winxp box. To do that, I'd like to install duplicity on
the cygwin box. That install process (best described by the somewhat
downlevel

http://blog.khorun.com/2008/09/using-duplicity-on-windows-under-cygwin.html

) works for the install of the prerequisite GnuPGInterface and boto
python modules (process=[download tarball, tar xfz, python setup.py
install]) but fails for the install of duplicity itself, with the
error:

me AT cygwinBox ~/bin/duplicity-0.6.09$ python setup.py install
...
> error: Python was built with Visual Studio 2003;

Note that I'd cheerfully replace that version of python (the 2.5.2
that shipped with my ArcGIS 9.3), except that I use some ArcGIS
extensions which seem to choke on other pythons :-( so I'd prefer to
build against that if at all possible.

> extensions must be built with a compiler than can generate
> compatible binaries. Visual Studio 2003 was not found on this
> system. If you have Cygwin installed, you can try compiling with
> MingW32, by passing "-c mingw32" to setup.py.

I tried to take the advice offered, but fail:

me AT cygwinBox ~/bin/duplicity-0.6.09$ python -c mingw32 setup.py install
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
> NameError: name 'mingw32' is not defined
me AT cygwinBox ~/bin/duplicity-0.6.09$ python setup.py -c mingw32 install
> usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
>    or: setup.py --help [cmd1 cmd2 ...]
>    or: setup.py --help-commands
>    or: setup.py cmd --help
> error: option -c not recognized
me AT cygwinBox ~/bin/duplicity-0.6.09$ python setup.py install -c mingw32 
> usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
>    or: setup.py --help [cmd1 cmd2 ...]
>    or: setup.py --help-commands
>    or: setup.py cmd --help
> error: invalid command 'mingw32'

What's the appropriate syntax here? Or how else should I fix this
build problem?

TIA, Tom Roche <Tom_Roche AT pobox DOT com>

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