/usr/lib/xplc-0.3.13/libxplc_s.a is in libxplc0.3.13-dev 0.3.13-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/xplc-0.3.13/libxplc.a
/usr/lib/xplc-0.3.13/libxplc.a