For the binary distribution it is also necessary to have the Expat
   XML parser library installed. This library can be downloaded from:

      http://sourceforge.net/projects/expat/

   We recommend you use the latest stable version (currently
   1.95.7). Unzip and untar the downloaded file if necessary (StuffIt
   Expander may do this automatically). Go into the directory and run
   the following three commands:

      $> ./configure
      $> make
      $> make install

   This will install libexpat into /usr/local/lib, expat.h into
   /usr/local/include and xmlwf into /usr/local/bin.

   If you encounter any problems see the README file or
   doc/reference.html (and click on Building and Installing).