[nabla9]

Do programs exist that generate the most basic portable GUI (in Qt for example) from command line application?

Basically what you need is list of parameters, their types, allowed ranges, preferred way to modify and input parameter values (file selection, input box, slider, ...). Then button to run the program.

EDIT apparently there is https://github.com/chriskiehl/Gooey for Python.

EDIT2 Hmm. maybe fbs is good enough https://build-system.fman.io/