require virtual function override when make

[goeunsong]

Hi, As I got an error message like below,

ERROR: failed to load ./plugins/libyolo_layer.so. Did you forget to do a "make" in the "./plugins/" subdirectory?

I tried make clean, then make again. but I encountered another message.

computes: 53 NVCCFLAGS: -gencode arch=compute_53,code=[sm_53,compute_53] nvcc -ccbin g++ -I"/usr/local/cuda/include" -I"/usr/local/TensorRT-7.1.3.4/include" -I"/usr/local/include" -I"plugin" -gencode arch=compute_53,code=[sm_53,compute_53] -Xcompiler -fPIC -c -o yolo_layer.o yolo_layer.cu yolo_layer.h(89): warning: function "nvinfer1::IPluginV2Ext::configurePlugin(const nvinfer1::Dims , int, const nvinfer1::Dims , int, const nvinfer1::DataType , const nvinfer1::DataType , const __nv_bool , const __nv_bool , nvinfer1::PluginFormat, int)" is hidden by "nvinfer1::YoloLayerPlugin::configurePlugin" -- virtual function override intended?

yolo_layer.h(89): warning: function "nvinfer1::IPluginV2Ext::configurePlugin(const nvinfer1::Dims , int, const nvinfer1::Dims , int, const nvinfer1::DataType , const nvinfer1::DataType , const bool , const bool , nvinfer1::PluginFormat, int)" is hidden by "nvinfer1::YoloLayerPlugin::configurePlugin" -- virtual function override intended?

g++ -shared -o libyolo_layer.so yolo_layer.o -L"/usr/local/cuda/lib64" -L"/usr/local/TensorRT-7.1.3.4/lib" -L"/usr/local/lib" -Wl,--start-group -lnvinfer -lnvparsers -lnvinfer_plugin -lcudnn -lcublas -lnvToolsExt -lcudart -lrt -ldl -lpthread -Wl,--end-group

I want to require virtual function override. How can I require it? thanks.

[jkjung-avt]

yolo_layer.h(89): warning: function "nvinfer1::IPluginV2Ext::configurePlugin(const nvinfer1::Dims , int, const nvinfer1::Dims , int, const nvinfer1::DataType , const nvinfer1::DataType , const __nv_bool , const __nv_bool , nvinfer1::PluginFormat, int)" is hidden by "nvinfer1::YoloLayerPlugin::configurePlugin" -- virtual function override intended?

yolo_layer.h(89): warning: function "nvinfer1::IPluginV2Ext::configurePlugin(const nvinfer1::Dims , int, const nvinfer1::Dims , int, const nvinfer1::DataType , const nvinfer1::DataType , const bool , const bool , nvinfer1::PluginFormat, int)" is hidden by "nvinfer1::YoloLayerPlugin::configurePlugin" -- virtual function override intended?

You could safely ignore these 2 warnings. I kept the code the way it is, because I want the code to compile across different versions of TensorRT (more exactly, TensorRT 6, 7, and 8).

If you really want to get rid of those warnings for TensorRT 7, you could refer to my old code here: https://github.com/jkjung-avt/tensorrt_demos/blob/9665269a013eb569992242dca8afa601c919d1be/plugins/yolo_layer.h#L107-L108

[goeunsong]

thanks. I tried change yolo_layer.h then make again and got no warnings. But when I run code , I got an error message

ERROR: failed to load ./plugins/libyolo_layer.so. Did you forget to do a "make" in the "./plugins/" subdirectory?

What can I try to successfully run code without errors?

[jkjung-avt]

What's the output of ldd ./plugins/libyolo_layer.so? (Could all dynamic library dependencies for "libyolo_layer.so" be resolved on your system?)

[goeunsong]

    linux-vdso.so.1 (0x0000007fa56c8000)
    libgtk3-nocsd.so.0 => /usr/lib/aarch64-linux-gnu/libgtk3-nocsd.so.0 (0x0000007fa5640000)
    libnvinfer.so.7 => /usr/lib/aarch64-linux-gnu/libnvinfer.so.7 (0x0000007f9822a000)
    libcudart.so.10.2 => /usr/local/cuda/lib64/libcudart.so.10.2 (0x0000007f981b6000)
    libstdc++.so.6 => /usr/lib/aarch64-linux-gnu/libstdc++.so.6 (0x0000007f98022000)
    libgcc_s.so.1 => /lib/aarch64-linux-gnu/libgcc_s.so.1 (0x0000007f97ffe000)
    libc.so.6 => /lib/aarch64-linux-gnu/libc.so.6 (0x0000007f97ea4000)
    /lib/ld-linux-aarch64.so.1 (0x0000007fa569d000)
    libdl.so.2 => /lib/aarch64-linux-gnu/libdl.so.2 (0x0000007f97e8f000)
    libpthread.so.0 => /lib/aarch64-linux-gnu/libpthread.so.0 (0x0000007f97e63000)
    libcublas.so.10 => /usr/lib/aarch64-linux-gnu/libcublas.so.10 (0x0000007f93185000)
    libcudnn.so.8 => /usr/lib/aarch64-linux-gnu/libcudnn.so.8 (0x0000007f93147000)
    libmyelin.so.1 => /usr/lib/aarch64-linux-gnu/libmyelin.so.1 (0x0000007f92cb9000)
    libnvrtc.so.10.2 => /usr/local/cuda/lib64/libnvrtc.so.10.2 (0x0000007f91888000)
    libm.so.6 => /lib/aarch64-linux-gnu/libm.so.6 (0x0000007f917cf000)
    librt.so.1 => /lib/aarch64-linux-gnu/librt.so.1 (0x0000007f917b8000)
    libcublasLt.so.10 => /usr/lib/aarch64-linux-gnu/libcublasLt.so.10 (0x0000007f8f7f2000)

are output of ldd ./plugins/libyolo_layer.so

[goeunsong]

I also run and checked $ python3 -c "import ctypes; ctypes.cdll.LoadLibrary('./plugins/libyolo_layer.so') "

no error occurred and returned nothing.

[goeunsong]

Oh, there was a problem that paths were mixed. I solved it. Thank you.