cmake_minimum_required(VERSION 3.16.0) project(demo LANGUAGES CXX) set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic") find_package(Qt6 COMPONENTS Widgets REQUIRED) set(CMAKE_AUTOMOC ON) add_executable(demo main.cpp MainWindow.cpp) target_link_libraries(demo PRIVATE Qt6::Widgets)