[Pyrex] Using Visual C++

[Lenard Lindstrom]

Navid Parvini wrote:
> Dear All,
>
> I'm new in learning Pyrex, so I'm thankful for your help.
>
> I have written a code named first.pyx and then used "pyrex.py" to 
> created "first.c" file but now I want to know how can I create 
> "first.dll" file by using "Visual C++".
>
> Would you please help me?
>
> Thank you in advance.
>
> Regards,
> Navid
>
>
>
Hi Navid,

The easiest way to compile Pyrex extension modules is with Python's 
distutils package, a part of the standard library. On Windows, Visual 
C++ is used by default. To use distutils with Pyrex the Pyrex package 
should be installed. To install Pyrex run:

python setup.py install

from Pyrex's distribution directory.

To build a project with distutils you need a setup.py file. I have 
attached a simple example Pyrex module and it's setup file. To compile 
and build the extension module do:

python setup.py build_ext --inplace

If all works well this should give you test.pyd, a Python extension 
module DLL. Here is a quick Python session to confirm it worked:

 >>> import test
 >>> dir(test)
['__builtins__', '__doc__', '__file__', '__name__', 'x']
 >>> test.x()
This is it.

You can reuse the setup.py file by replacing "project = 'test'" with 
"project = 'first'". The Python documents give a more thorough 
explanation of setup.py and distutils in the top level document 
"Distributing Python Modules". Pyrex specifics are given in the Pyrex 
Language Overview under "Source Files and Compilation". Also:

python setup.py build_ext --help

will list command line options.

A further note, matching compilers with Python versions is a bit 
involved on Windows. Python 2.3 used Visual C++ 6.0, Python's 2.4 and 
2.5 use the 2003 toolkit, and Python 2.6 and 3.0 need Visual Studio 
2008. Distutils refuses to compile a project if the wrong VC++ is installed.

Lenard

-- 
Lenard Lindstrom
<len-l at telus.net>

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