/usr/lib/gcc-cross/powerpc64-linux-gnu/5/32/libgo.so is in gccgo-5-multilib-powerpc64-linux-gnu 5.3.1-14ubuntu2cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/gcc-cross/powerpc64-linux-gnu/5/32/../../../../../powerpc64-linux-gnu/lib32/libgo.so.7