Install libmx-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libmx-dev
toolkit for the Moblin user experience (development files)
The MX toolkit is a GUI toolkit library, using Clutter and is optimized for the Moblin user experience. It consists of various classes useful for building UIs such as Buttons, Tooltips, Scrollbars and others. It also supports styling through CSS stylesheets. . This package contains the development files.