/usr/lib/x86_64-linux-gnu/libchamplain-gtk-0.12.so is in libchamplain-gtk-0.12-dev 0.12.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libchamplain-gtk-0.12.so.0.1.1
/usr/lib/x86_64-linux-gnu/libchamplain-gtk-0.12.so.0.1.1