title: Installing M2Crypto on CentOS
body: <p>I am trying to install M2Crypto on CentOS by compiling from the source. 
  i am doing a python setup.py build
  But I get the following error, </p>
  
  <pre><code>/usr/local/lib/python2.6/distutils/dist.py:266: UserWarning: Unknown distribution option: 'test_suite'
    warnings.warn(msg)
  running build
  running build_py
  running build_ext
  building 'M2Crypto.__m2crypto' extension
  swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c
  swig -python -I/usr/local/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i
  SWIG/_m2crypto.i:28: Error: Unable to find 'openssl/opensslv.h'
  SWIG/_evp.i:9: Error: Unable to find 'openssl/opensslconf.h'
  SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h'
  error: command 'swig' failed with exit status 1
  </code></pre>
  
  <p>Please advise ... </p>
  
  <p>Prasanna</p>