回复了主题帖： RV1106手把手教你：惊呆了！USB摄像头秒变AI助手，rknn轻松拍照做yolov5推理！

ubuntu@ubuntu:~/luckfox-pico/RV1106_Linux/yolov5/build$ make [ 16%] Built target imageutils [ 33%] Built target fileutils [ 50%] Built target imagedrawing make[2]: *** No rule to make target '/home/ubuntu/luckfox-pico/RV1106_Linux/sources/3rdparty/rknpu2/Linux/armhf-uclibc/librknnmrt.so', needed by 'rknn_yolov5_realtime'.  Stop. make[1]: *** [CMakeFiles/Makefile2:125: CMakeFiles/rknn_yolov5_realtime.dir/all] Error 2 make: *** [Makefile:136: all] Error 2 这是为啥呀