/usr/lib/x86_64-linux-gnu/libclxclient.so is in libclxclient-dev 3.9.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libclxclient.so.3.9.0
/usr/lib/x86_64-linux-gnu/libclxclient.so.3.9.0