Install gobjc++-7-multilib-arm-linux-gnueabi by entering the following commands in the terminal:
sudo apt update sudo apt install gobjc++-7-multilib-arm-linux-gnueabi
Description:
GNU Objective-C++ compiler (multilib support)
This is the GNU Objective-C++ compiler, which compiles Objective-C++ on platforms supported by the gcc compiler. . This is a dependency package, depending on development packages for the non-default multilib architecture(s).
Homepage: http://gcc.gnu.org/
Version: 7.3.0-16ubuntu3cross1
Section: universe/devel