/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference

[Mohammed-elsabri]

Hi, I try to use yolov3 in ros_melodic and get the following error: [ 98%] Built target darknet_ros_lib [100%] Linking CXX executable /home/root-/catkin_ws/devel/lib/darknet_ros/darknet_ros /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference to open_video_stream' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference toload_image_cv' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference to make_window' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference toget_image_from_stream' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference to make_iseg_layer' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference toshow_image_cv' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference to ipl_into_image' /home/root-/catkin_ws/devel/lib/libdarknet_ros_lib.so: undefined reference toipl_to_image' collect2: error: ld returned 1 exit status YOLOv3-ROS/darknet_ros/CMakeFiles/darknet_ros.dir/build.make:216: recipe for target '/home/root-/catkin_ws/devel/lib/darknet_ros/darknet_ros' failed make[2]: [/home/root-/catkin_ws/devel/lib/darknet_ros/darknet_ros] Error 1 CMakeFiles/Makefile2:2669: recipe for target 'YOLOv3-ROS/darknet_ros/CMakeFiles/darknet_ros.dir/all' failed make[1]: [YOLOv3-ROS/darknet_ros/CMakeFiles/darknet_ros.dir/all] Error 2 Makefile:140: recipe for target 'all' failed make: *** [all] Error 2 Invoking "make -j4 -l4" failed