$ sudo apt-get update
$ sudo apt-get install gcc-4.9-multilib-powerpc-linux

gcc-4.9-multilib-powerpc-linux is installed in your system.

Make ensure the gcc-4.9-multilib-powerpc-linux package were installed using the commands given below,

$ sudo dpkg-query -l | grep gcc-4.9-multilib-powerpc-linux*

You will get with gcc-4.9-multilib-powerpc-linux package name, version, architecture and description in a table

gcc-4.9-multilib-powerpc-linux package basic information: