Simple MQTT Client Example

 cmake_minimum_required(VERSION 3.16)
 project(simplemqttclient LANGUAGES CXX)

 set(CMAKE_AUTOMOC ON)
 set(CMAKE_AUTOUIC ON)

 if(NOT DEFINED INSTALL_EXAMPLESDIR)
     set(INSTALL_EXAMPLESDIR "examples")
 endif()

 set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/mqtt/simpleclient")

 find_package(Qt6 REQUIRED COMPONENTS Core Gui Mqtt Network Widgets)

 qt_add_executable(simplemqttclient
     main.cpp
     mainwindow.cpp mainwindow.h mainwindow.ui
 )

 set_target_properties(simplemqttclient PROPERTIES
     WIN32_EXECUTABLE TRUE
     MACOSX_BUNDLE TRUE
 )

 target_compile_definitions(simplemqttclient PUBLIC
     QT_DEPRECATED_WARNINGS
 )

 target_link_libraries(simplemqttclient PUBLIC
     Qt::Core
     Qt::Gui
     Qt::Mqtt
     Qt::Network
 )

 target_link_libraries(simplemqttclient PUBLIC Qt::Widgets)

 if((QT_MAJOR_VERSION GREATER 4))
     target_link_libraries(simplemqttclient PUBLIC
         Qt::Widgets
     )
 endif()

 install(TARGETS simplemqttclient
     RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
     BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
     LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
 )