qt5 simple cmake sample file overview

CMakeLists.txt

cmake_minimum_required(VERSION 3.5)

# !!!xxx that means you can type your project name
project(x #!!!xxx
VERSION 0.1 LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets REQUIRED)
find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Widgets REQUIRED)
set(PROJECT_SOURCES
        main.cpp
        # xxx.ui xxx.h xxx.cpp
)
if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
    qt_add_executable( x  #!!!xxx # WHAT EVER
        MANUAL_FINALIZATION
        ${PROJECT_SOURCES})
else()
        add_executable(x #!!!xxx #WHAT EVER
            ${PROJECT_SOURCES})
endif()
target_link_libraries(x PRIVATE Qt${QT_VERSION_MAJOR}::Widgets)