Qt6使用cmake

1.使用pro2cmake

https://blog.csdn.net/haokan123456789/article/details/148676526

https://www.qt.io/blog/introducing-qmake2cmake

 

2.一些对应关系

https://stackoverflow.com/questions/43763416/how-to-convert-qmake-to-cmake

https://wiki.qt.io/CMake_Port/Porting_Guide

 

3.示例

https://blog.csdn.net/weixin_43359674/article/details/127040308#:~:text=%E6%9C%AC%E6%96%87%E4%BB%8B%E7%BB%8D%E5%A6%82%E4%BD%95%E5%9C%A8Qt6%E9%A1%B9%E7%9B%AE%E4%B8%AD%E4%BD%BF%E7%94%A8CMake%E9%80%9A%E8%BF%87%E5%AD%90%E7%9B%AE%E5%BD%95%E7%AE%A1%E7%90%86%E9%A1%B9%E7%9B%AE%E6%96%87%E4%BB%B6%E5%92%8C%E6%96%87%E4%BB%B6%E5%A4%B9%EF%BC%8C%E4%BB%A5%E4%BE%BF%E4%BA%8E%E5%A4%A7%E5%9E%8B%E9%A1%B9%E7%9B%AE%E7%9A%84%E7%BB%84%E7%BB%87%E5%92%8C%E7%BB%B4%E6%8A%A4%E3%80%82%20%E6%96%87%E7%AB%A0%E8%AF%A6%E7%BB%86%E5%B1%95%E7%A4%BA%E4%BA%86%E5%88%9B%E5%BB%BA%E5%AD%90%E7%9B%AE%E5%BD%95%E3%80%81%E9%85%8D%E7%BD%AECMakeLists.txt%E6%96%87%E4%BB%B6%E4%BB%A5%E5%8F%8A%E9%93%BE%E6%8E%A5%E5%BA%93%E7%9A%84%E5%85%B7%E4%BD%93%E6%AD%A5%E9%AA%A4%E3%80%82%20%E6%91%98%E8%A6%81%E7%94%9F%E6%88%90%E4%BA%8E%20C%E7%9F%A5%E9%81%93%20%EF%BC%8C%E7%94%B1,DeepSeek-R1%20%E6%BB%A1%E8%A1%80%E7%89%88%E6%94%AF%E6%8C%81%EF%BC%8C%20%E5%89%8D%E5%BE%80%E4%BD%93%E9%AA%8C%20%3E%20%E4%B8%BA%E4%BA%86%E4%BE%BF%E4%BA%8E%E7%AE%A1%E7%90%86%E5%A4%9A%E6%96%87%E4%BB%B6%E7%9A%84%E9%A1%B9%E7%9B%AE%EF%BC%8C%E9%9C%80%E8%A6%81%E5%88%86%E6%88%90%E4%B8%8D%E5%90%8C%E7%9A%84%E6%96%87%E4%BB%B6%E5%A4%B9%E6%9D%A5%E5%AD%98%E6%94%BE%E4%B8%8D%E5%90%8C%E5%8A%9F%E8%83%BD%E7%9A%84%E5%AE%9E%E7%8E%B0%E4%BB%A3%E7%A0%81%EF%BC%8C%E8%BF%99%E6%A0%B7%E5%8F%AF%E4%BB%A5%E6%96%B9%E4%BE%BF%E7%AE%A1%E7%90%86%EF%BC%8C%E4%B8%8D%E4%BC%9A%E5%AF%BC%E8%87%B4%E9%A1%B9%E7%9B%AE%E5%A4%A7%E4%BA%86%E4%BB%A5%E5%90%8E%E7%9A%84%E6%B7%B7%E4%B9%B1%E3%80%82

 

4.测试例子

①文件目录

 

qml：

 

后台工程：

 工程目录

 ②main工程

cmakelist：

cmake_minimum_required(VERSION 3.16)

project(Testusefuentui VERSION 0.1 LANGUAGES CXX)

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

set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(Qt6 REQUIRED COMPONENTS Core Quick)

qt_standard_project_setup(REQUIRES 6.8)

add_subdirectory(Moduls/NewWidget)
add_subdirectory(Moduls/Math)

qt_add_executable(${PROJECT_NAME}
    main.cpp
)

# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
# If you are developing for iOS or macOS you should consider setting an
# explicit, fixed bundle identifier manually though.
set_target_properties(${PROJECT_NAME} PROPERTIES
#    MACOSX_BUNDLE_GUI_IDENTIFIER com.example.appTestusefuentui
    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
    MACOSX_BUNDLE TRUE
    WIN32_EXECUTABLE TRUE
)

include(GNUInstallDirs)
install(TARGETS ${PROJECT_NAME}
    BUNDLE DESTINATION .
    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)

target_link_libraries(${PROJECT_NAME} PRIVATE
    Qt6::Quick
    NewWidget
    Math
)

main.cpp

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include "Mytool.h"
#include "Mymath.h"

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;

    Mytool mytool(&engine);
    mytool.print();

    Mymath mymath;
    mymath.cal();

    return app.exec();
}

③qml工程

cmakelist：

cmake_minimum_required(VERSION 3.16)

project(NewWidget VERSION 0.1 LANGUAGES CXX)

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

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# 查找Qt6的模块
find_package(Qt6 REQUIRED COMPONENTS Core Quick Gui Qml)

# 头文件
set(HEADERS
    Mytool.h
    Test.h
)

# 源文件
set(SOURCES
    Mytool.cpp
    Test.cpp
)

# QML 资源文件
set(RESOURCES
    qml.qrc
)


# 编译成静态库并添加源文件到静态库中, 确保add_library() 或 add_executable()在 target_link_libraries() 之前调用
add_library(${PROJECT_NAME} STATIC
    ${SOURCES} ${HEADERS} ${RESOURCES}
)

# 链接Qt6库
target_link_libraries(${PROJECT_NAME} PRIVATE
    Qt6::Core
    Qt6::Gui
    Qt6::Qml
)

# 设置包含目录,让库的使用者能找到头文件
target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

入口类

#ifndef MYTOOL_H
#define MYTOOL_H

#include <QObject>
#include <QGuiApplication>
#include <QQmlApplicationEngine>

class Mytool : public QObject
{
    Q_OBJECT
public:
    explicit Mytool(QQmlApplicationEngine *engine, QObject *parent = nullptr);

    void print();
signals:

private:
    QQmlApplicationEngine  *m_engine = nullptr;
};

#endif // MYTOOL_H





#include "Mytool.h"
#include "QDebug"
Mytool::Mytool(QQmlApplicationEngine *engine, QObject *parent)
    : QObject{parent}
{
    m_engine = engine;
}

void Mytool::print()
{
    qDebug()<<"##################################";

    Q_INIT_RESOURCE(qml);

    const QUrl url(QStringLiteral("qrc:/qml/QML/MyToolComponent.qml"));

#if 0
    QString filePath = "D:/work/QtSpace/Testusefuentui/Moduls/NewWidget/QML/MyToolComponent.qml";
    const QUrl url = QUrl::fromLocalFile(filePath);
#endif

    QObject::connect(m_engine, &QQmlApplicationEngine::objectCreated,
                     qApp, [url](QObject *obj, const QUrl &objUrl) {
                         if (!obj && url == objUrl)
                             QCoreApplication::exit(-1);
                     }, Qt::QueuedConnection);
    m_engine->load(url);
}

qml文件

import QtQuick
import FluentUI 1.0

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")


    FluRectangle {
        color: "red"
        width: 30
        height: 30
        anchors.centerIn: parent
    }
}

④后台工程

cmakelist：

cmake_minimum_required(VERSION 3.16)

project(Math LANGUAGES CXX)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)


# 查找Qt6的模块
find_package(Qt6 REQUIRED COMPONENTS Core Quick Gui Qml)

# 头文件
set(HEADERS
    Mymath.h
)

# 源文件
set(SOURCES
    Mymath.cpp
)

# QML 资源文件
set(RESOURCES

)


# 编译成静态库并添加源文件到静态库中, 确保add_library() 或 add_executable()在 target_link_libraries() 之前调用
add_library(${PROJECT_NAME} STATIC
    ${SOURCES} ${HEADERS} ${RESOURCES}
)

# 链接Qt6库
target_link_libraries(${PROJECT_NAME} PRIVATE
    Qt6::Core
    Qt6::Gui
    Qt6::Qml
)

# 设置包含目录,让库的使用者能找到头文件
target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

调用类

#ifndef MYMATH_H
#define MYMATH_H

class Mymath
{
public:
    Mymath();

    void cal();
};

#endif // MYMATH_H





#include "Mymath.h"
#include <QDebug>

Mymath::Mymath() {}

void Mymath::cal()
{
    qDebug()<<"cal";
}

说明：

1.qt6+cmake的这种子项目工程与qt5+pri的不一样，前者是所有子项目都是静态或动态库，后者是将所有源码都编译到exe中

2.此方式在qml工程里加载了qml资源文件，需要在C++里将资源文件写入静态库，使用：Q_INIT_RESOURCE(qml)实现，qml就是资源名称；也可在cmakelist中实现，但是目前还没成功