根据论坛大神给出的教程改写yolov3_mobilenetv2_example示例程序，使用yolov5替代模型，编译model_inference模块报错如下：
[ 96%] Linking CXX executable tensor_task
../../libmodel_inference.so：对‘vtable for inference::YoloV5PostProcess’未定义的引用
collect2: 错误： ld 返回 1
test/tensor_task/CMakeFiles/tensor_task.dir/build.make:97: recipe for target ‘test/tensor_task/tensor_task’ failed
make[2]: *** [test/tensor_task/tensor_task] Error 1
CMakeFiles/Makefile2:143: recipe for target ‘test/tensor_task/CMakeFiles/tensor_task.dir/all’ failed
make[1]: *** [test/tensor_task/CMakeFiles/tensor_task.dir/all] Error 2
make[1]: *** 正在等待未完成的任务…
[100%] Linking CXX executable roi_resizer_task
../../libmodel_inference.so：对‘vtable for inference::YoloV5PostProcess’未定义的引用
collect2: 错误： ld 返回 1
test/roi_task/CMakeFiles/roi_resizer_task.dir/build.make:97: recipe for target ‘test/roi_task/roi_resizer_task’ failed
make[2]: *** [test/roi_task/roi_resizer_task] Error 1
CMakeFiles/Makefile2:169: recipe for target ‘test/roi_task/CMakeFiles/roi_resizer_task.dir/all’ failed
make[1]: *** [test/roi_task/CMakeFiles/roi_resizer_task.dir/all] Error 2
Makefile:135: recipe for target ‘all’ failed
make: *** [all] Error 2