[yt-users] Odd runtime error on Snow Leopard

John ZuHone jzuhone at cfa.harvard.edu
Thu Jun 16 10:51:11 PDT 2011


Hi all,

I have a strange runtime error after installing yt-dev on Snow Leopard.

Traceback (most recent call last):
  File "/Users/jzuhone/Source/yt-i386/bin/iyt", line 7, in <module>
    execfile(__file__)
  File "/Users/jzuhone/Source/yt-i386/src/yt-hg/scripts/iyt", line 3, in <module>
    from yt.mods import *
  File "/Users/jzuhone/Source/yt-i386/src/yt-hg/yt/mods.py", line 96, in <module>
    from yt.visualization.api import \
  File "/Users/jzuhone/Source/yt-i386/src/yt-hg/yt/visualization/api.py", line 34, in <module>
    from plot_collection import \
  File "/Users/jzuhone/Source/yt-i386/src/yt-hg/yt/visualization/plot_collection.py", line 26, in <module>
    from matplotlib import figure
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/figure.py", line 18, in <module>
    from axes import Axes, SubplotBase, subplot_class_factory
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/axes.py", line 14, in <module>
    import matplotlib.axis as maxis
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/axis.py", line 14, in <module>
    import matplotlib.text as mtext
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/text.py", line 31, in <module>
    from matplotlib.backend_bases import RendererBase
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 41, in <module>
    import matplotlib.textpath as textpath
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/textpath.py", line 9, in <module>
    from matplotlib.mathtext import MathTextParser
  File "/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/mathtext.py", line 52, in <module>
    import matplotlib._png as _png
ImportError: dlopen(/Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/_png.so, 2): Symbol not found: _png_set_longjmp_fn
  Referenced from: /Users/jzuhone/Source/yt-i386/lib/python2.7/site-packages/matplotlib/_png.so
  Expected in: dynamic lookup

I have tried the following things:

1) using the libpng (1.4.4) installed via Fink vs. the yt local copy of libpng, making sure that the environment variables were set appropriately
2) setting the environment variables CC and CXX as suggested by the script

neither of these things seems to make much of a difference. 

Best,

John ZuHone


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