On 1/14/2013 12:42 AM, Dick Hollenbeck wrote:
> On 01/13/2013 06:57 PM, Wayne Stambaugh wrote:
>> On 1/13/2013 4:58 PM, Miguel Angel Ajo Pelayo wrote:
>>>> The CMake module you were looking for is FindPythonInterp which finds the 
>>>> Python interpreter and sets the PYTHON_EXECUTABLE variable.  You can 
>>>> define a specific Python version by setting PythonInterp_FIND_VERSION. I 
>>>> still have some validation to do on Linux when both Python3 and Python2 
>>>> are installed just to make sure everything works as expected.
>>>>
>>>> Also found that using "#!/usr/bin/env python2" in fixswigimports.py breaks 
>>>> the windows build so I am currently working on a solution to this problem. 
>>>>  I changed python2 to python and it fixes the build on windows but may 
>>>> cause problems for Linux.  I'm thinking since the python interpreter is 
>>>> being called to run this script that the "#!/usr/bin/env python2" line is 
>>>> even necessary.
>>>> Is there any reason to run this script outside of the KiCad scripting 
>>>> build?
>>> It's only needed when we make a scripting build and the pcbnew.py is 
>>> regenerated. It will fix the way it looks for _pcbnew.so / .pyd so when 
>>> running from a pcbnew with embedded python, it won't
>>> reload the DLL and use the internal swigs to pcbnew objects.
>>>
>>>> If not, then I should be able to safely remove this from 
>>>> fixswigimports.py.  If it cannot be removed, I may have to use CMake to 
>>>> generate this file on the fly to add the correct Python environment string 
>>>> to the beginning of the file.
>>> May be we can just call $PYTHON_EXECUTABLE fixswigimports.py, most probably 
>>> this little script will run within python3, but not sure.
>> The last I recall is that code generated by SWIG is not yet compatible 
>> with Python 3.  That's why Python 2 is still required to build wxPython. 
>>   It's been a while since I've used SWIG so maybe that has changed. 
>> Until I see a wxPython release built against Python 3, I'll stick with 
>> Python 2.
> 
> Swig is there now:
> 
> http://www.swig.org/Doc1.3/Python.html#Python_python3support
> 
> wxpython for python 3.x is known as Phoenix, and it is also probably 
> build-able at this time.

I wonder why the wxPython folks haven't released a Python3 build yet
unless there are still some issues.

> 
> 
> But they did not do the interface to C++ in Phoenix using SWIG.
> 
> 
> https://groups.google.com/forum/?fromgroups=#!topic/wxpython-users/p69PjUnMN-c
> 
> Used SIP instead:
> 
> http://riverbankcomputing.co.uk/software/sip/intro

Thanks for the information.  I'll take a look at it when I get a chance.

> 
> In any case it looks like python 3.x is an option, as it should be, since its 
> about 5
> years old or more.

For developers yes.  For users probably not so much.  I just checked
Debian's package archive and wxPython is still only available for
Python2 even in the unstable branch.  Until wxPython binaries are widely
available for Python3 on all platforms, I think sticking with Python2
for now will save us a lot of grief.


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