ros/catkin — pull request #252 by tkruse (2012-11-07 13:02:13+00:00)
Title: Novice-friendly error message when catkin not found.

To help novice users with catkin, it may be good to have a more helpful error message at toplevel.

I also thought about replacing REQUIRED for QUIET to suppress the find_package error message which must be very confusing to novice users (and misleading in the underlay case), but to my taste it is better to leave that.

I am not sure whether 1 is a good value to catkin_FOUND to set.

If you decide against a nice error message, the if() around catkin_workspace() might still be added to just have a single error message.