/usr/lib/x86_64-linux-gnu/libgldi.so.3 is in libgldi3 3.4.1-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgldi.so.3.4.1
/usr/lib/x86_64-linux-gnu/libgldi.so.3.4.1