This ROS package checks out, patches and compiles a pre-release version of the Gazebo Project from svn trunk and contains wrappers for using Gazebo with ROS. The local patch provides modifications for performance, debug outputs, ROS-specific customizations, capabilities, etc. The less ROS-specific patches are pushed back to the Gazebo repository incrementally as the package evolves. This package will update to newer revisions of Gazebo incrementally as new updates are made stable.