The program uses GNU Readline (https://tiswww.case.edu/php/chet/readline/rltop.html) for command completion and history.
The Readline library is free software, distributed under the terms of the [GNU] General Public License as published by the Free Software Foundation, version 3 of the License.
Packages are available on most Linux distributions and BSD systems as well as macOS. Depending on your OS you man need to also install a package like libreadline-dev to have access to the headers.
The program assumes POSIX functionalities as provided by unistd.h. The best way to run it on Windows might be to install a Unix compatibility layer or use Windows' Subsystem for Linux.
To compile the program you need a C++ compiler which supports the C++11 standard.
The program has ben tested on the following systems:
