title: clang error when installing "dependencies" package with pip
body: <p>I'm trying to test <a href="http://www.datarobot.com/blog/multiple-regression-using-statsmodels/" rel="nofollow">this</a> implementation of multiple linear regression in python. It requires "statsmodels.api", however when I try to do "import statsmodels.api", I get the error:</p>
  
  <pre><code>/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/statsmodels/api.py in &lt;module&gt;()
       16 from .duration.hazard_regression import PHReg
       17 from .nonparametric import api as nonparametric
  ---&gt; 18 from . import distributions
       19 from .__init__ import test
       20 from . import version
  
  ImportError: cannot import name distributions
  </code></pre>
  
  <p>so I tried to install the "distributions" package with pip:</p>
  
  <pre><code>$ pip install distributions
  </code></pre>
  
  <p>however, it fails with a clang error:</p>
  
  <pre><code>/usr/bin/clang++ -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7/distributions/lp/special.o -ldistributions_shared -lm -o build/lib.macosx-10.6-intel-2.7/distributions/lp/special.so
  ld: library not found for -ldistributions_shared
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  error: command '/usr/bin/clang++' failed with exit status 1
  </code></pre>
  
  <p>I've tried my best to figure out what -ldistrbutions_shared is, but I can't seem to figure it out.</p>
  
  <p>No luck when I tried updating xcode. All my internet searching hasn't been able to help me resolve this. Any help would be much appreciated!</p>
  
  <p>BTW, I'm running OSX 10.10.5 and using Python 2.7</p>