/usr/share/doc/gobjc-4.8-powerpc64le-linux-gnu is in gobjc-4.8-powerpc64le-linux-gnu 4.8.5-4ubuntu1cross2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/gcc-4.8-powerpc64le-linux-gnu-base