ubuntu 18, pytorch 是 pip安装的，cuda10.2 cudnn8.0
cmake 成功了，找到了 cudnn：
-- Caffe2: CUDA detected: 10.2
-- Caffe2: CUDA nvcc is: /usr/local/cuda/bin/nvcc
-- Caffe2: CUDA toolkit directory: /usr/local/cuda
-- Caffe2: Header version is: 10.2
-- Found cuDNN: v8.0.0  (include: /usr/include, library: /usr/lib/aarch64-linux-gnu/libcudnn.so)
-- Autodetected CUDA architecture(s):  5.3
-- Added CUDA NVCC flags for: -gencode;arch=compute_53,code=sm_53
-- Configuring done
-- Generating done

make 报错：
libtorch.so: undefined reference to `cudnnGetConvolutionBackwardDataAlgorithm@libcudnn.so.8

为什么