Install gcc-5-x86-64-linux-gnux32 by entering the following commands in the terminal:
sudo apt update sudo apt install gcc-5-x86-64-linux-gnux32
Description:
GNU C compiler
This is the GNU C compiler, a fairly portable optimizing compiler for C. . This package contains C cross-compiler for x32 architecture.
Homepage: http://gcc.gnu.org/
Version: 5.5.0-12ubuntu1cross1
Section: universe/devel