Install gcc-5-hppa64-linux-gnu by entering the following commands in the terminal:
sudo apt update sudo apt install gcc-5-hppa64-linux-gnu
Description:
GNU C compiler (cross compiler for hppa64)
This is the GNU C compiler, a fairly portable optimizing compiler for C.
Homepage: http://gcc.gnu.org/
Version: 5.5.0-12ubuntu1
Section: universe/devel