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