I have also tested it with libnvidia-nvvm4 installed. I got exactly the same result. It could be a problem with wrong the path for libnvidia-nvvm.so.4. After installation of the package it is located here:
/usr/lib/x86_64-linux-gnu/nvidia/current/libnvidia-nvvm.so.4 /usr/lib/x86_64-linux-gnu/nvidia/current/libnvidia-nvvm.so.525.85.12 But the nvidia compiller is looking of the library here: /lib/x86_64-linux-gnu/libnvidia-nvvm.so.525.85.12 /usr/lib/x86_64-linux-gnu/libnvidia-nvvm.so.525.85.12 /lib/libnvidia-nvvm.so.525.85.12 /usr/lib/libnvidia-nvvm.so.525.85.12 When in created symlinks to the files libnvidia-nvvm.so.4 and libnvidia- nvvm.so.525.85.12 in /usr/lib/x86_64-linux-gnu/ the OpenCL compiler started to work properly. So installation of libnvidia-nvvm4 and creating symlinks is actual workaround.
