I was wondering if anyone had any possible suggestions to fix the build
problem I am having below. I built libpng as a universal library as
described below. MPL then builds without any complaints, but gives me an
import error related to libpng. I'm not a unix expert, and I'm not sure how
to proceed.
Thanks!
Uri
On Thu, Jul 30, 2009 at 01:34, Uri Laserson <laser...@mit.edu> wrote:
> The first suggestion failed with the same error, while the same suggestion
> worked up through the last step (make installers) which fails with the same
> error.
>
> I decided to try Tommy's suggestion of just figuring out how to compile
> libpng as a universal binary. The way I did it was to run the configuration
> script as:
>
> ./configure --disable-dependency-tracking
>
>
> and then to manually edit the Makefile. To CPPFLAGS and LDFLAGS I added
>
> -arch i386 -arch ppc
>
> Running make and sudo make install successfully built a universal library
> for me.
>
> After deleting my old MPL egg, I import matplotlib successfully and the
> version number is as expected (0.98.6svn).
>
> However, when I try to import pyplot, I get the following exception
> traceback. Any suggestions on how to fix this?
>
> Thanks again!
>
> In [4]: import matplotlib.pyplot as plt
> ---------------------------------------------------------------------------
> ImportError Traceback (most recent call last)
>
> /usr/local/lib/<ipython console> in <module>()
>
> /Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/pyplot.py
> in <module>()
> 4 from matplotlib import _pylab_helpers, interactive
> 5 from matplotlib.cbook import dedent, silent_list, is_string_like,
> is_numlike
> ----> 6 from matplotlib.figure import Figure, figaspect
> 7 from matplotlib.backend_bases import FigureCanvasBase
> 8 from matplotlib.image import imread as _imread
>
> /Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/figure.py
> in <module>()
> 17 import artist
> 18 from artist import Artist, allow_rasterization
> ---> 19 from axes import Axes, SubplotBase, subplot_class_factory
> 20 from cbook import flatten, allequal, Stack, iterable, dedent
> 21 import _image
>
> /Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/axes.py
> in <module>()
> 17 import matplotlib.dates as mdates
> 18 import matplotlib.font_manager as font_manager
> ---> 19 import matplotlib.image as mimage
> 20 import matplotlib.legend as mlegend
> 21 import matplotlib.lines as mlines
>
> /Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/image.py
> in <module>()
> 19 # For clarity, names from _image are given explicitly in this
> module:
> 20 import matplotlib._image as _image
> ---> 21 import matplotlib._png as _png
> 22
> 23 # For user convenience, the names from _image are also imported
> into
>
> ImportError:
> dlopen(/Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/_png.so,
> 2): Symbol not found: _png_create_info_struct
> Referenced from:
> /Library/Frameworks/Python.framework/Versions/4.0.30002/lib/python2.5/site-packages/matplotlib/_png.so
> Expected in: /usr/local/lib/libpng12.0.dylib
>
>
>
>
> On Wed, Jul 29, 2009 at 21:46, John Hunter <jdh2...@gmail.com> wrote:
>
>> On Wed, Jul 29, 2009 at 4:34 PM, Uri Laserson<laser...@mit.edu> wrote:
>> > Hi everyone,
>> >
>> > I am trying to build the latest svn trunk version of MPL on OS X 10.5.
>> I am
>> > getting the following error:
>>
>> Try
>>
>> make build_osx105
>> python setup.py install --prefix=~/somewhere
>>
>> If that doesn't work, try
>>
>> cd release/osx
>>
>> read the readme there and follow the instructions. This will build
>> mpl the way we do when making a release: fetch the dependencies (zlip,
>> png and freetype) and build them with the right flags, and then build
>> mpl explcitly linking to these libs.
>>
>> JDH
>>
>
>
>
> --
> Uri Laserson
> PhD Candidate, Biomedical Engineering
> Harvard Medical School (Genetics)
> Massachusetts Institute of Technology (Mathematics)
> phone +1 917 742 8019
> laser...@mit.edu
>
--
Uri Laserson
PhD Candidate, Biomedical Engineering
Harvard Medical School (Genetics)
Massachusetts Institute of Technology (Mathematics)
phone +1 917 742 8019
laser...@mit.edu
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