In CMakeList.txt, is 'catkin' a package in this line, eg. 'find_package(catkin REQUIRED COMPONENTS roscpp)?
From the ROS tutorial ( http://wiki.ros.org/catkin/CMakeLists... ), I understand that doing the above results in the creation of several CMake environment variables with the catkin prefix. But I am kind of confused as whether the 'catkin' above is a package named 'catkin'.