c++ - ROS hydro opencv2 linking error during 'catkin_make' -

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I have a little problem with my ROS Hydro disto, I need to use it for a project, so that anyone in Indico Can not change

The problem is that I have used the catkin_create_pkg packname opencv2 ... to create my project package. But when I try to call catkin_make , I get the following error:

/ opt / ros / hydro / share / catkin / cmake / catkinConfig Cmake: CMake error at 75 (find_package): A package configuration file provided by "opencv2" with no name was not found: 

  opencv2Config.cmake opencv2-config.cmake   
 Add the installation prefix of "opencv2" to CMAKE_PREFIX_PATH or set the "opencv2_DIR" directory in one of the files above. If "opencv2" provides a separate development package or SDK, make sure it is installed.   
 I know that opencv2 is installed because i can find it  rospack opencv2  and I can use it in other projects which are not related to ROS.  
 I have CMakeLists.txt and package.xml  
 CMakeLists.txt:  
   
 target_link_libraries (BasicObstDetect_node 
)   
 $ {Catkin_LIBRARIES} 
 $ {opencv2_LIBRARIES})   
 package. Xml:  
 
  & lt; build_depend & gt; opencv2 & lt; / Build_depend & gt; Trying to use OpenCVY instead of  CMakeLists  add_package (OpenCV) included_ directory ($ {OpenCV_INCLUDE_DIRS} )   
 and  target_link_libraries (followers $ {OpenCV_LIBRARIES})    to add

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