title: nfcpy: "Symbol not found"?
body: <p>I've install nfcpy via pip, but am struggling to set it up. While running in the python shell, the following error comes up:</p>
  
  <pre><code>&gt;&gt;&gt; import nfc
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/usr/local/lib/python2.7/site-packages/nfc/__init__.py", line 28, in &lt;module&gt;
      from clf import ContactlessFrontend
    File "/usr/local/lib/python2.7/site-packages/nfc/clf/__init__.py", line 34, in &lt;module&gt;
      import nfc.llcp
    File "/usr/local/lib/python2.7/site-packages/nfc/llcp/__init__.py", line 31, in &lt;module&gt;
      from llc import LOGICAL_DATA_LINK, DATA_LINK_CONNECTION
    File "/usr/local/lib/python2.7/site-packages/nfc/llcp/llc.py", line 41, in &lt;module&gt;
      from . import sec
    File "/usr/local/lib/python2.7/site-packages/nfc/llcp/sec.py", line 490, in &lt;module&gt;
      OpenSSL = OpenSSLWrapper(libcrypto)
    File "/usr/local/lib/python2.7/site-packages/nfc/llcp/sec.py", line 183, in __init__
      self.crypto.EC_KEY_set_public_key_affine_coordinates.restype = c_int
    File "/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 378, in __getattr__
      func = self.__getitem__(name)
    File "/usr/local/Cellar/python/2.7.10/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ctypes/__init__.py", line 383, in __getitem__
      func = self._FuncPtr((name_or_ordinal, self))
  AttributeError: dlsym(0x7f81ca493370, EC_KEY_set_public_key_affine_coordinates): symbol not found
  </code></pre>
  
  <p>What's the meaning of this error message, and how could it be fixed?</p>
  
  <p>For reference, I am using the following configuration:</p>
  
  <ul>
  <li><p>OS: Mac OSX 10.10.5</p></li>
  <li><p>NFC Reader: RC-S380</p></li>
  <li><p>Python 2.7.10</p></li>
  <li><p>pip 8.1.2</p></li>
  <li><p>nfcpy (0.11.1)</p></li>
  </ul>