In case of qt5 build to windows ce. add-in didn't add to Default Qt/Wince version combobox. and added to Default Qt/Win version combobox
this occured by RunQMakeQuery function in QMakeProcess.cs
qmake at qt5 always return host mkspec not target mkspec. because qmake use QMAKE_XSPEC for crossplatform.
our solution is rename the mkspec folder to default.
but this is not complete solution.