Install lib32gcc-5-dev by entering the following commands in the terminal:
sudo apt update sudo apt install lib32gcc-5-dev
Description:
GCC support library (32 bit development files)
This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
Homepage: http://gcc.gnu.org/
Version: 5.5.0-12ubuntu1
Section: universe/libdevel