Unable to compile after dependency

[wuxianggujun]

CMake Error: The INTERFACE_QT_MAJOR_VERSION property of "Qt5::Core" does not agree with the value of QT_MAJOR_VERSION already determined for "QT_ProjectExample".

[dantti]

make sure you setup your Qt major version properly, it's documented

[wuxianggujun]

确保你正确设置了你的 Qt 主要版本，它被记录在案

I'm a newbie and I don't know how. This is my Cmakefile file.

cmake_minimum_required(VERSION 3.24) #指定cmake版本
project(QT_ProjectExample) #工程名

set(CMAKE_CXX_STANDARD 20) #使用的C++标准
# 开启QT用于预处理的组件
set(CMAKE_AUTOMOC ON) 
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
# 设置cmake模块查询目录，注意这里的路径到mingw64既可
set(CMAKE_PREFIX_PATH "D:/msys64/mingw64")

add_subdirectory(include/QXlsx)

include_directories(
        ${PROJECT_SOURCE_DIR}/include
        # ${PROJECT_SOURCE_DIR}/Sources/Forms
        ${PROJECT_SOURCE_DIR}/Sources/Headers
        ${PROJECT_SOURCE_DIR}/include/QXlsx
)

# 查找QT模块
find_package(Qt6 COMPONENTS
        Core
        Gui
        Widgets
        REQUIRED)

# 引入lib目录的lib文件什么的
link_directories(./lib)

# 添加源文件
add_executable(QT_ProjectExample Sources/main.cpp Sources/mainwindow.cpp Sources/Headers/mainwindow.h Sources/Forms/mainwindow.ui)

# 添加模块
target_link_libraries(QT_ProjectExample
        Qt::Core
        Qt::Gui
        Qt::Widgets
        )

target_link_libraries(${PROJECT_NAME} QXlsx)

if (WIN32)
    set(DEBUG_SUFFIX)
    if (MSVC AND CMAKE_BUILD_TYPE MATCHES "Debug")
        set(DEBUG_SUFFIX "d")
    endif ()
    set(QT_INSTALL_PATH "${CMAKE_PREFIX_PATH}")
    if (NOT EXISTS "${QT_INSTALL_PATH}/bin")
        set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")
        if (NOT EXISTS "${QT_INSTALL_PATH}/bin")
            set(QT_INSTALL_PATH "${QT_INSTALL_PATH}/..")
        endif ()
    endif ()
    if (EXISTS "${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll")
        add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
                COMMAND ${CMAKE_COMMAND} -E make_directory
                "$<TARGET_FILE_DIR:${PROJECT_NAME}>/plugins/platforms/")
        add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
                COMMAND ${CMAKE_COMMAND} -E copy
                "${QT_INSTALL_PATH}/plugins/platforms/qwindows${DEBUG_SUFFIX}.dll"
                "$<TARGET_FILE_DIR:${PROJECT_NAME}>/plugins/platforms/")
    endif ()
    foreach (QT_LIB Core Gui Widgets)
        add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
                COMMAND ${CMAKE_COMMAND} -E copy
                "${QT_INSTALL_PATH}/bin/Qt6${QT_LIB}${DEBUG_SUFFIX}.dll"
                "$<TARGET_FILE_DIR:${PROJECT_NAME}>")
    endforeach (QT_LIB)
endif ()

[wuxianggujun]

I've managed to solve it by looking at other open source projects

find_package(QT NAMES Qt6 Qt5 COMPONENTS Core Gui REQUIRED)
find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Gui REQUIRED)

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