[Numpy-discussion] mingw-w64 tutorial ?

Sebastian Haase seb.haase@gmail....
Sun Aug 22 01:16:57 CDT 2010


On Sun, Aug 22, 2010 at 3:39 AM, Sebastian Haase <seb.haase@gmail.com> wrote:
> On Sun, Aug 22, 2010 at 12:02 AM, Christoph Gohlke <cgohlke@uci.edu> wrote:
>>
>>
>> On 8/21/2010 2:37 PM, Sebastian Haase wrote:
>>> On Sat, Aug 21, 2010 at 11:29 PM, Christoph Gohlke<cgohlke@uci.edu>  wrote:
>>>>
>>>>
>>>> On 8/21/2010 1:44 PM, Sebastian Haase wrote:
>>>>> Hi,
>>>>>
>>>>> this is somewhat OT for this list, but since I know that David and
>>>>> many others here have lot's of experience compiling C extensions I
>>>>> thought I could just ask:
>>>>> Looking at
>>>>> http://sourceforge.net/projects/mingw-w64/files/
>>>>> I did not know (even after reading the FAQ) which file to download and
>>>>> how things would eventually work.
>>>>>
>>>>> I have a 64bit windows 7 installed, and got many precompiled packages
>>>>> for amd64 Python 2.7 from
>>>>> http://www.lfd.uci.edu/~gohlke/pythonlibs/
>>>>> (thanks to  Christoph Gohlke for all the work)
>>>>> But now I have some C++ extensions on my own, and know how build them
>>>>> using cygwin -- but that would only produce 32bit modules and should
>>>>> be unusable.
>>>>>
>>>>> So, the question is if someone has or knows of some tutorial about how
>>>>> to go about this - step by step. This info could maybe even go the
>>>>> scipy wiki....
>>>>>
>>>>> Thanks,
>>>>> Sebastian Haase
>>>>
>>>>
>>>> Hi Sebastian,
>>>>
>>>> I am not aware of such a tutorial. There's some information at
>>>> <http://projects.scipy.org/numpy/wiki/MicrosoftToolchainSupport>
>>>>
>>>> I did not have good experience last time (about a year ago) I tried
>>>> mingw-w64. Occasional crashes during compilation and at runtime.
>>>> Probably that has changed. At least you have to create the missing
>>>> libpython and libmsvcr90 libraries from the dlls and make libmsvcr90 the
>>>> default crt.
>>>>
>>>> You probably know that the "free" Windows 7 Platform SDK can be used to
>>>> build Python>=2.6 extensions written in C89.
>>>> <http://mattptr.net/2010/07/28/building-python-extensions-in-a-modern-windows-environment/>
>>>>
>>>> --
>>> Hi Christoph,
>>>
>>> I did not exactly know this - thanks for the info (I knew about
>>> something called Visual Studio Express 2003- but that only
>>> works/worked for Python 2.5, I think...)
>>
>> You can use Visual Studio Express 2008 for building 32 bit extensions
>> for Python >=2.6.
>>
>>>
>>> Rephrasing my original question: Is the mingw-w64 at all "easy" by now
>>
>> Don't know. David Cournapeau probably has the most experience.
>>
>> http://bugs.python.org/issue4709
>> http://www.equation.com/servlet/equation.cmd?call=fortran
>>
>>> ? How about cross compiling to 64bit Windows from a 32bit Ubuntu (that
>>> I could easily run on virtualbox) ?
>>
>> I am also interested in cross compiling on Ubuntu but have not found the
>> time to get started. The IOCBio project cross-compiles their 32 bit
>> extensions on Linux
>> <http://code.google.com/p/iocbio/wiki/BuildWindowsInstallersOnLinux>.
>> But as you can see they use Wine and Mingw...
>>
>>>
>>> (But I'm not apposed at all to the "free" Windows 7 Platform SDK, so
>>> I'll look into that -- giant download !?)
>>
>> About one GB.
>>
>>>
> Do you know if that contains a C++ compiler ?  The first page before
> it starts the actual download has "Visual C++ Compilers" grayed out
> ... !?
>
> -Sebastian
>
Ok, apparently I had to install the "dot NET Framework 4" from
http://msdn.microsoft.com/en-us/netframework/aa569263.aspx
first, before then the C++ could be installed.
But now setup.py still complains:
       error: Unable to find vcvarsall.bat
and I think it is looking for
C:\Program Files (x86)\Microsoft Visual Studio 9.0
while that file got installed in
C:\Program Files (x86)\Microsoft Visual Studio 10.0
I don't know how to get the "log.debug" messages from the setup.py
script activated...
?
Still trying ....

Cheers,
Sebastian


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