/usr/lib/x86_64-linux-gnu/libalog.so is in libalog3-dev 0.5.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libalog.so.0.5.2.1
/usr/lib/x86_64-linux-gnu/libalog.so.0.5.2.1