Mesongui provides a graphical user interface to the Meson build system. It can be used for two main purposes: configuring an existing build or creating a new build for the given source.
mesongui [ source or build directory ]
If the argument is a directory with a Meson project, the Gui will allow you to configure and generate a build tree for it.
If the argument is an existing build directory, Mesongui will start a gui that will show all your configuration options and allows you to change them as desired. The gui can also be used to build and install the project.