Following up on this - To get circos to work I did the following....
1/ I installed all modules using cpanm
wget -O- http://cpanmin.us | perl - -l ~/perl5 App::cpanminus local::lib
eval `perl -I ~/perl5/lib/perl5 -Mlocal::lib`
cpanm Config::General
cpanm Font::TTF
cpanm List::MoreUtils
cpanm Math::Bezier
cpanm Math::Round
cpanm Math::VecStat
cpanm Params::Validate
cpanm Readonly
cpanm Regexp::Common
cpanm Set::IntSpan
cpanm Text::Format
cpanm Clone
cpanm GD
echo 'eval `perl -I ~/perl5/lib/perl5 -Mlocal::lib`' >> ~/.profile
GD would not install. To fix this:
I Downloaded and installed macports from http://www.macports.org/install.php
sudo /opt/local/bin/port install gd2
sudo /opt/local/bin/port install jpeg
sudo /opt/local/bin/port install libpng
sudo /opt/local/bin/port install libgda5
I got an error associated with gnome desktop and ran
sudo /opt/local/bin/port clean gnome-desktop
then reinstalled libgd
Finally, to get GD to a spot where perl will find it…
export PATH=/opt/local/bin:/opt/local/sbin:$PATH