**ImportError**: unable to load extension module '/home/wyx/pypy3env/site-packages/numpy/core/**multiarray.pypy3-52.so**':
<p>I created a virtualenv of <strong>PyPy 5.2.0-alpha0 with GCC 4.6.3</strong> on Ubuntu 14.04.
After that installed numpy (using pip) for pypy successfully, when i do
<code>import numpy</code> in the pypy3 intepreter the following error occurrs:</p>

<pre><code>ImportError: unable to load extension module
'/home/wyx/pypy3env/site-packages/numpy/core/multiarray.pypy3-52.so':
/home/wyx/pypy3env/site-packages/numpy/core/multiarray.pypy3-52.so:
undefined symbol: PyUnicode_GetLength
</code></pre>

<p>How do I fix this?</p>