All software packages can be installed via distribution package.

swig-1.3
    http://swig.org/
    http://sourceforge.net/projects/swig/files/swig/swig-1.3.40/

Perl modules (via CPAN or distribution package)
    IO::Socket::SSL
    HTTP::Daemon::SSL
    RPC::XML

Python modules
    m2crypto


BUILDING ON UBUNTU

The following is a complete list of packages required in order to build from
git on Ubuntu (tested on version 10.04):

autoconf-archive
automake
g++
git-core
libgmp3c2
libgmp3-dev
libio-socket-ssl-perl
libhttp-daemon-ssl-perl
librpc-xml-perl
libssl-dev
libtool
python-dev
swig
libxmlsec1-dev

BUILDING ON FREEBSD

The following is a list of ports necessary to build from git on FreeBSD
(tested on version 7.3):

math/gmp
devel/autoconf-archive
security/xmlsec1