slave.pro Example File
modbus/slave/slave.pro
  QT += serialbus serialport widgets
  requires(qtConfig(combobox))
  TARGET = modbusslave
  TEMPLATE = app
  CONFIG += c++11
  SOURCES += main.cpp\
          mainwindow.cpp \
          settingsdialog.cpp
  HEADERS  += mainwindow.h settingsdialog.h
  FORMS    += mainwindow.ui settingsdialog.ui
  RESOURCES += slave.qrc
  target.path = $$[QT_INSTALL_EXAMPLES]/serialbus/modbus/slave
  INSTALLS += target