We have a commercial windows application making use of QT. I'll be very simplistic in my description as I must have a clear answer. At compile time we use QT *.LIB files We have a result of our compilation is an *.EXE file, we wrap into an installer and ship to clients. This *.EXE files depends on *.DLL files in QT. at runtime the *.DLL files of QT are used My questions are: 1) is can I legally bundle the QT *.dll files in my installer? 2) can I legally bundle my final *.EXE files even if it's compilation/linkage depends on QT *.LIB files Thank you