/usr/share/man/man1/powerpc64le-linux-gnu-g++-4.8.1.gz is in g++-4.8-powerpc64le-linux-gnu 4.8.2-16ubuntu4cross0.4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/powerpc64le-linux-gnu-gcc-4.8.1.gz