actionlib tutorial errors

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Hi! I'm new to ROS and I've been having some trouble getting started with the actionlib tutorial under Fuerte and Xubuntu 12.04.

I'm following the steps to create a Simple Action Server. In step 1.1, I used the following command to define the Fibonacci action, and then used the following command to generate the message files:

$ rosrun actionlib_msgs genaction.py . Fibonacci.action

This didn't work at first, and I needed to follow the guidance in another ROS answers topic to continue. The code that worked was as follows:

$ rosrun actionlib_msgs genaction.py -o msg/ action/Fibonacci.action

I followed the steps to edit CMakeLists.txt, created fibonacci_server.cpp, and copied the code given by the tutorial. If I make the project (with rosmake), though, the build fails with the follow error.

  Scanning dependencies of target fibonacci_server
  make[3]: Leaving directory `/home/will/ros_workspace/tutorials/learning_actionlib/build'
  make[3]: Entering directory `/home/will/ros_workspace/tutorials/learning_actionlib/build'
  [100%] Building CXX object CMakeFiles/fibonacci_server.dir/src/fibonacci_server.o
  Linking CXX executable ../bin/fibonacci_server
  /usr/bin/ld: CMakeFiles/fibonacci_server.dir/src/fibonacci_server.o: undefined reference to symbol 'vtable for boost::detail::thread_data_base'
  /usr/bin/ld: note: 'vtable for boost::detail::thread_data_base' is defined in DSO /usr/lib64/libboost_thread.so.1.46.1 so try adding it to the linker command line
  /usr/lib64/libboost_thread.so.1.46.1: could not read symbols: Invalid operation
  collect2: ld returned 1 exit status
  make[3]: *** [../bin/fibonacci_server] Error 1
  make[3]: Leaving directory `/home/will/ros_workspace/tutorials/learning_actionlib/build'
  make[2]: *** [CMakeFiles/fibonacci_server.dir/all] Error 2
  make[2]: Leaving directory `/home/will/ros_workspace/tutorials/learning_actionlib/build'
  make[1]: *** [all] Error 2
  make[1]: Leaving directory `/home/will/ros_workspace/tutorials/learning_actionlib/build'

Any assistance would be greatly appreciated. Thanks!