Install libnetxx-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libnetxx-dev
Description:
C++ library for network programming (development headers)
Netxx is a C++ network programming library. It is designed to take the pain out of programming network communications applications.
Homepage: http://www.pmade.com/labs/index.html
Version: 0.3.2-2ubuntu1
Section: universe/libdevel