Trouble Installing NCCL

I am currently trying to install NCCL.These are the instructions I am following:

tar -xf nccl_2.2.13-1+cuda9.2_x86_64.txz
cd nccl_2.2.13-1+cuda9.2_x86_64
sudo cp -R * /usr/local/cuda-9.2/targets/x86_64-linux/
sudo ldconfig

However when I do the third command, i.e. sudo cp -R …

I get the following msg, cp: target ‘/usr/local/cuda-9.2/targets/x86_64-linux/’ is not a directory. I am wondering why this problem occurs and if there is anything I can do to solve this issue.