/usr/lib/x86_64-linux-gnu/liblqr-1.so is in liblqr-1-0-dev 0.4.1-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/liblqr-1.so.0.3.1
/usr/lib/x86_64-linux-gnu/liblqr-1.so.0.3.1