/usr/lib/libgoocanvasmm-1.0.so is in libgoocanvasmm-dev 0.15.4-1build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libgoocanvasmm-1.0.so.5.0.0
/usr/lib/libgoocanvasmm-1.0.so.5.0.0