Problem of using package "gmapping" in groovy

edit

I created a new pkg and need a dependency on gmapping pkg After the new pkg created with catkin_create_pkg uu roscpp gmapping when I do catkin-make,errors occured like following: " CMake Error at /opt/ros/groovy/share/catkin/cmake/catkinConfig.cmake:72 (find_package): Could not find a package configuration file provided by "gmapping" with any of the following names:

gmappingConfig.cmake
gmapping-config.cmake

Add the installation prefix of "gmapping" to CMAKE_PREFIX_PATH or set "gmapping_DIR" to a directory containing one of the above files. If "gmapping" provides a separate development package or SDK, be sure it has been installed. ...... "

Any help??