easy_install PyOpenSSL error

Question

Any idea about what cause the error below ?

I use Linux centos with openssl-devel.i386 0.9.8e-12.el5_5.7

$ easy_install PyOpenSSL
Searching for PyOpenSSL
Reading http://pypi.python.org/simple/PyOpenSSL/
Reading http://launchpad.net/pyopenssl
Reading http://pyopenssl.sourceforge.net/
Best match: pyOpenSSL 0.13
Downloading http://pypi.python.org/packages/source/p/pyOpenSSL/pyOpenSSL-0.13.tar.gz#md5=767bca18a71178ca353dff9e10941929
Processing pyOpenSSL-0.13.tar.gz
Running pyOpenSSL-0.13/setup.py -q bdist_egg --dist-dir /tmp/easy_install-0Dunib/pyOpenSSL-0.13/egg-dist-tmp-aV6OCC
warning: no previously-included files matching '*.pyc' found anywhere in distribution
OpenSSL/ssl/connection.c: In function ‘ssl_Connection_set_context’:
OpenSSL/ssl/connection.c:289: warning: implicit declaration of function ‘SSL_set_SSL_CTX’
OpenSSL/ssl/connection.c: In function ‘ssl_Connection_get_servername’:
OpenSSL/ssl/connection.c:313: error: ‘TLSEXT_NAMETYPE_host_name’ undeclared (first use in this function)
OpenSSL/ssl/connection.c:313: error: (Each undeclared identifier is reported only once
OpenSSL/ssl/connection.c:313: error: for each function it appears in.)
OpenSSL/ssl/connection.c:320: warning: implicit declaration of function ‘SSL_get_servername’
OpenSSL/ssl/connection.c:320: warning: assignment makes pointer from integer without a cast
OpenSSL/ssl/connection.c: In function ‘ssl_Connection_set_tlsext_host_name’:
OpenSSL/ssl/connection.c:346: warning: implicit declaration of function ‘SSL_set_tlsext_host_name’
error: Setup script exited with error: command 'gcc' failed with exit status 1

Answer 1

In order to install it under virtualenv, you should first install the required packages. On ubuntu:

sudo apt-get install python-dev libffi-dev libssl-dev

Then you can just type:

pip install pyopenssl