Install g++-x86-64-linux-gnux32 by entering the following commands in the terminal:
sudo apt update sudo apt install g++-x86-64-linux-gnux32
Description:
GNU C++ compiler for the x32 architecture
This is the GNU C++ compiler, a fairly portable optimizing compiler for C++. . This is a dependency package providing the default GNU C++ cross-compiler for the x32 architecture.
Version: 4:7.3.0-3ubuntu1
Section: universe/devel