hi, currently, i'm learning first tutorial ( http://wiki.ros.org/rviz/Tutorials/Markers%3A%20Basic%20Shapes ) and stuck...my command window look like =

-- Build files have been written to: /home/sun/catkin_ws/build

make: *** [cmake_check_build_system] Error 1

Invoking "make cmake_check_build_system" failed

sun@sun-HP-Pavilion-dv6-Notebook-PC:~/catkin_ws$ rosrun using_markers basic_shapes

[rospack] Error: package 'using_markers' not found

sun@sun-HP-Pavilion-dv6-Notebook-PC:~/catkin_ws$ 

...can anybody tell me what i'm missing? i have created file src/basic_shapes.cpp , and added those two lines to CMakeLists.txt file in using_markers package. i'm on indigo.