Few days ago Silicos released the source code of the tool Pharao.
Here some notes about the installation of Pharao.
I had some problems, and with the help of the Pharao developers (Gert Thijs) I understood how to install it properly.
1) install cmake
2) install the latest openbabel release via svn
3) follow the installation of openbabel here
4) download and install pharao
If everything worked fine, there should not be any problem.
See also BO exchange.