Please follow the my_app/README.txt (which assumes that your lisp files are in my_app/lisp/)
The dependencies are:
eql5, ecl, Qt5Core, Qt5Gui, Qt5Widgets, Qt5PrintSupport shared libraries (plus used modules, both Qt5 and EQL5)
*.ui files (if any)
*.qm translation files (if any)
[Unix]
Deploy the installed libraries from /usr/local/lib/, because they have already been stripped, and are therefore smaller.
A detailed description of deploying Qt applications can be found in Qt Assistant.