/usr/bin/mips-linux-gnu-gnathtml is in gnat-6-mips-linux-gnu 6.4.0-17ubuntu1cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/mips-linux-gnu-gnathtml-6
/usr/bin/mips-linux-gnu-gnathtml-6