/usr/lib/x86_64-linux-gnu/libdirectfb.so is in libdirectfb-dev 1.2.10.0-5.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdirectfb-1.2.so.9.0.1
/usr/lib/x86_64-linux-gnu/libdirectfb-1.2.so.9.0.1