$ sudo apt-get update
$ sudo apt-get install gdc-5-multilib-sparc64-linux-g

gdc-5-multilib-sparc64-linux-g is installed in your system.

Make ensure the gdc-5-multilib-sparc64-linux-g package were installed using the commands given below,

$ sudo dpkg-query -l | grep gdc-5-multilib-sparc64-linux-g*

You will get with gdc-5-multilib-sparc64-linux-g package name, version, architecture and description in a table

gdc-5-multilib-sparc64-linux-g package basic information: