[Twisted-Python] OpenSSL problem

[zooko]

On Nov 30, 2007, at 8:10 AM, Andrew Francis wrote:

> error - Python was build with Visual Studio 7.1 and
> extensions need to be built with same version of
> compiler, but it isn't installed.
>
> I don't have Visual Studio 7.1. And I used a
> pre-compiled Stackless Python binary. Is there an easy
> way to get around this without say, recompiling
> Stackless (and compiling OpenSSL) with cygwin gcc?

The error message is in error.  Here is the Python issue ticket in  
which the message was changed from stating that you have to use the  
same compiler that was used to build Python, to instead stating that  
you have to use a compiler that is compatible with the one that was  
used to build Python:

http://bugs.python.org/issue1257728

In my experience, simply setting "compiler=mingw32" in your distutils  
config file works for all extension modules that I have tried  
*except* for pyOpenSSL.  I don't remember the details, but I have a  
note here which says that I was unable to build pyOpenSSL for  
myself.  Here's a ticket saying that I don't like pyOpenSSL because  
it is unmaintained and I don't know how to build it:

http://allmydata.org/trac/tahoe/ticket/11

Note that there are apparently some problems with using the cygwin  
gcc -mno-cygwin (a.k.a. the mingw32 compiler) to build Python  
extension modules, but these problems are limited to specific kinds  
of interaction between extension modules, namely that you can either  
build your modules so that they can safely exchange std::iostreams  
with the Python executable or with other modules that were built with  
Visual Studio, or you can build your modules so that they can safely  
exchange FILE*'s, but not both.

I haven't experienced this issue myself.  Here is a mailing list  
message describing it:

http://mail.python.org/pipermail/distutils-sig/2007-September/ 
008255.html

Regards,

Zooko