Re: [matplotlib-devel] [sage-devel] PyCXX, Matplotlib and OS X 10.6

[William S. <ws...@gm...>]

On Mon, Sep 28, 2009 at 9:14 AM, John Hunter <jd...@gm...> wrote:
> On Mon, Sep 28, 2009 at 10:48 AM, William Stein <ws...@gm...> wrote:
>> If you could just try running your matplotlib build on
>> bsd.math.washington.edu and reporting about whether or not it works,
>> that would be very helpful, since it will indicate whether the problem
>> is somehow in Sage or in pyCXX or Matplotlib itself or something else.
>
> I was able to build into a mostly clean environment (rebuild all deps
> zlip, freetype, png) using my OSX make file in, but I had to update
> the MACOSX_DEPLOYMENT_TARGET  to 10.6 (I've committed this to svn
> HEAD).
>
>
>  PREFIX=~/devtest make -f make.osx fetch deps mpl_build mpl_install
>
> But even simple tests are failing with::
>
> jdh2358@bsd:~> LD_LIBRARY_PATH=~/devtest/lib/
> PYTHONPATH=~/devtest/lib/python2.6/site-packages/ /usr/bin/python -c
> 'import matplotlib; matplotlib.use("Agg"); from matplotlib.pyplot
> import *; plot([1,2,3]); savefig("test")'
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
>  File "/Users/jdh2358/devtest//lib/python2.6/site-packages/matplotlib/pyplot.py",
> line 7, in <module>
>    from matplotlib.figure import Figure, figaspect
>  File "/Users/jdh2358/devtest//lib/python2.6/site-packages/matplotlib/figure.py",
> line 16, in <module>
>    import artist
>  File "/Users/jdh2358/devtest//lib/python2.6/site-packages/matplotlib/artist.py",
> line 6, in <module>
>    from transforms import Bbox, IdentityTransform, TransformedBbox,
> TransformedPath
>  File "/Users/jdh2358/devtest//lib/python2.6/site-packages/matplotlib/transforms.py",
> line 34, in <module>
>    from matplotlib._path import affine_transform
> ImportError: /Users/jdh2358/devtest/lib/python2.6/site-packages/matplotlib/_path.so:
> no appropriate 64-bit architecture (see "man python" for running in
> 32-bit mode)
>
> I'm attaching my build output in case anyone sees anything that might
> be triggering this 32bit/64bit problem (see attached for full output).
>  I did not rebuild numpy and this may be the problem since the failure
> is in the _path module.  I'll give that a try next

I think it's definitely an issue with PyCXX.   I installed the latest
version of PyCXX and tried their test example program, and got the
dreaded "Abort trap":

bash-3.2$ python
Python 2.6.2 (r262:71600, Sep 27 2009, 13:41:53)
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import CXX.example
CXX is installed.
The support files you need are in the PYTHON/etc/CXX directory.
The include files are in the distutils include path already.
Just refer to them as "CXX/CXX_Objects.h", etc.

range object created 0x1003140b0
range object destroyed 0x1003140b0
>>> CXX.example.test()
Example Test starting
Trying to convert a NULL to an Py::Int
Abort trap
bash-3.2$ pwd
/Users/was/build/sage-4.1.2.alpha4/spkg/build/matplotlib/trunk/matplotlib/pycxx-6.1.1/Demo/Python2

----

Note that installing PyCXX and their test program was not easy.  I
watched their "python setup.py install" fail repeatedly, then I would
copy missing files where they should go, and iterate (about 6 times


I've cc'd the PyCXX maintainer Barry Scott.  Barry, do you have access
to an OS X 10.6 install, since it seems PyCXX is broken there?  If
not, I can give you an account on a machine at University of
Washington.   PyCXX is the single component of Sage
(http://sagemath.org) that is holding us back from finishing the OS X
10.6 port.

 -- William