The QtSerialPort module is an add-on module for the Qt5 library, providing a single interface for both hardware and virtual serial ports. You no longer need to build Qt Serial Port manually simply install Qt 5.1 or later and go to section Usage Brief description NOTE: As of Qt 5.1, Qt Serial Port is now officially part of Qt. 7 For those wishing to contribute to the development.4.1 Build and install from command line.