Small collection of custom macports. Right now that consists of:

mysql5-devel (5.5.18)
mysql5-server-devel (5.5.18)
percona-devel (5.5.17)
percona-server-devel (5.5.17)

To setup just read the docs here: http://guide.macports.org/#development.local-repositories

You will also need to add the following to your .profile

export DYLD_LIBRARY_PATH="/opt/local/lib/mysql5/mysql:$DYLD_LIBRARY_PATH"