title: How do you install cx_Oracle for Python on RHEL?
body: <p>I'm using Active Python since I don't want to be stuck with an old version of Python. I installed the instant client, and added the exports to my bash profile, but I'm getting this cryptic error:</p>
  
  <pre>
  # apy setup.py install --no-compile --root=/tmp/tmpz0JuWASA/cx_Oracle-5.1/_pypminstroot
  running install
  running build
  running build_ext
  building 'cx_Oracle' extension
  gcc -pthread -fno-strict-aliasing -fPIC -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/lib/oracle/11.2/sdk/include -I/opt/ActivePython-2.7/include/python2.7 -c cx_Oracle.c -o build/temp.linux-x86_64-2.7-11g/cx_Oracle.o -DBUILD_VERSION=5.0.4
  In file included from /opt/ActivePython-2.7/include/python2.7/Python.h:58,
                   from cx_Oracle.c:6:
  /opt/ActivePython-2.7/include/python2.7/pyport.h:849:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
  In file included from /usr/lib/oracle/11.2/sdk/include/oci.h:3029,
                   from cx_Oracle.c:10:
  /usr/lib/oracle/11.2/sdk/include/ociap.h:10788: warning: function declaration isn’t a prototype
  /usr/lib/oracle/11.2/sdk/include/ociap.h:10794: warning: function declaration isn’t a prototype
  error: command 'gcc' failed with exit status 1
  </pre>