I'm having the exact same problem on a fresh install of Ubuntu 10.04 Lucid, so it's not gone with the released version. The missing symbols are inlined implementations in boost/thread/pthread/condition_variable.hpp that implement methods in the corresponding condition_variable_fwd.hpp . I tried to include these headers directly from the sources of robot_mechanism_controllers in order to have the inline definitions there, but unfortunately that didn't help either. I've switched to gcc 4.3 for the moment but would appreciate any suggestions. -- View this message in context: http://ros-users.122217.n3.nabble.com/Error-compiling-pr2-controller-manager-tp417615p814725.html Sent from the ROS-Users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ ros-users mailing list ros-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ros-users