Install cpp-7-x86-64-linux-gnux32 by entering the following commands in the terminal:
sudo apt update sudo apt install cpp-7-x86-64-linux-gnux32
GNU C preprocessor
A macro processor that is used automatically by the GNU C compiler to transform programs before actual compilation. . This package has been separated from gcc for the benefit of those who require the preprocessor but not the compiler. . This package contains preprocessor configured for x32 architecture.