I installed a ROS-Driver for Basler Cameras accordance with the tutorial in http://wiki.ros.org/pylon_camera

But when catkin_make I met these problems:

compilation terminated.
make[2]: *** [pylon_camera/CMakeFiles/pylon_camera.dir/src/pylon_camera/pylon_camera.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/home/qcrong/catkin_ws/src/pylon_camera/src/pylon_camera/pylon_camera_node.cpp:31:27: fatal error: GenApi/GenApi.h: No such file or directory
 #include <GenApi/GenApi.h>
                           ^
compilation terminated.
make[2]: *** [pylon_camera/CMakeFiles/pylon_camera.dir/src/pylon_camera/pylon_camera_node.cpp.o] Error 1
make[1]: *** [pylon_camera/CMakeFiles/pylon_camera.dir/all] Error 2
make: *** [all] Error 2

Who knows how to solve these problems? Thank you very much!