Which is the person tracking library needed for catkin_make to work efficiently?

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When i enter

catkin_make

command in the terminal it shows :

Base path: /home/janhvi/catkin_ws Source space: /home/janhvi/catkin_ws/src Build space: /home/janhvi/catkin_ws/build Devel space: /home/janhvi/catkin_ws/devel Install space: /home/janhvi/catkin_ws/install ####

Running command: "make cmake_check_build_system" in

"/home/janhvi/catkin_ws/build" #### ####

Running command: "make -j4 -l4" in "/home/janhvi/catkin_ws/build"

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The catkin_make is not loading every command in the workspace. It needs some person tracking library in the folder, so which library exactly should be downloaded? I am using this to trace the skeleton points on a person detected in realsense camera R200.