I wanted to let everyone know that a few users have updated to Mavericks
and run into problems building both ROS and its dependencies due to changes
in the developers tools. I would recommend users which use ROS on their
Macs to hold off on upgrading to Mavericks until we have resolved these
issues.

Thanks,

-- 
William Woodall
ROS Development Team
william@osrfoundation.org
http://williamjwoodall.com/