QT += serialbus widgets requires(qtConfig(combobox)) qtConfig(modbus-serialport): QT += serialport TARGET = modbusclient TEMPLATE = app CONFIG += c++11 SOURCES += \ main.cpp\ mainwindow.cpp \ settingsdialog.cpp \ writeregistermodel.cpp HEADERS += \ mainwindow.h \ settingsdialog.h \ writeregistermodel.h FORMS += \ mainwindow.ui \ settingsdialog.ui RESOURCES += \ client.qrc target.path = $$[QT_INSTALL_EXAMPLES]/serialbus/modbus/client INSTALLS += target