$ sudo apt-get update
$ sudo apt-get install libgcc1-powerpc-cross 

libgcc1-powerpc-cross is installed in your system.

Make ensure the libgcc1-powerpc-cross package were installed using the commands given below,

$ sudo dpkg-query -l | grep libgcc1-powerpc-cross *

You will get with libgcc1-powerpc-cross package name, version, architecture and description in a table

libgcc1-powerpc-cross package basic information: