Install Doctrine2 with PEAR in MacPorts

Run those commands:

sudo /opt/local/bin/pear channel-discover pear.doctrine-project.org
sudo /opt/local/bin/pear channel-discover pear.symfony.com
sudo /opt/local/bin/pear install -a pear.doctrine-project.org/DoctrineORM-2.3.3
sudo /opt/local/bin/pear install pear.doctrine-project.org/DoctrineSymfonyConsole
sudo /opt/local/bin/pear install pear.doctrine-project.org/DoctrineSymfonyYaml

Then running doctrine -v should work but /opt/local/lib/php must be in the include_path of your PHP installation. I tried to include it in my /opt/local/etc/php5/php.ini file but didn’t work, so I added this line as the very first line in /opt/local/bin/doctrine.php:

set_include_path(get_include_path() . PATH_SEPARATOR . '/opt/local/lib/php');

Then everything worked fine.

Ref: http://delboy1978uk.wordpress.com/2012/06/26/installing-doctrine-2-2-2-on-mac-os-x/