错误：
Could neither find file "toplevel.cmake" in any workspace nor relative, checked the following paths:
/home/pepper/catkin_ws/catkin/cmake/toplevel.cmake
/opt/ros/indigo/catkin/cmake/toplevel.cmake
/opt/ros/indigo/lib/python2.7/cmake/toplevel.cmake
/opt/ros/indigo/share/catkin/cmake/toplevel.cmake
/opt/ros/indigo/lib/share/catkin/cmake/toplevel.cmakepepper@X:~/catkin_ws$
原因：
/opt/ros/indigo/share目录下的catkin文件夹被删除了。找到原因恢复即刻解决。