Qt Creator：构建CMake项目(待续)

落日映苍穹つ 2023-01-08 13:24 235阅读 0赞

[官方文档][Link 1]

# cmake vs qmake #

*  qmake 是为 Qt 量身打造的，使用起来非常方便
 *  cmake 使用上不如qmake简单直接，但复杂换来的是强大的功能
    
     *  内置的 out-of source 构建。（目前QtCreator为qmake也默认启用了该功能。参考：[浅谈 qmake 之 shadow build][qmake _ shadow build]）
     *  为各种平台和场景提供条件编译
     *  可处理多个可执行文件情况，和很好配合 QtTest 工作

如何选择?

*  对简单的Qt工程，采用 qmake
 *  对复杂度超过 qmake 处理能力的，采用 cmake

# 使用 #

## 准备 ##

在Qt Creator中设置CMake  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70]

## 创建qt工程 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 7]  
![在这里插入图片描述][20210120114630798.png]

运行，发现ok  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 8]  
看一下CMakeLists.txt的内容

cmake_minimum_required(VERSION 3.5)
    
    project(cmake_test LANGUAGES CXX)
    
    set(CMAKE_INCLUDE_CURRENT_DIR ON)
    
    set(CMAKE_AUTOUIC ON)
    set(CMAKE_AUTOMOC ON)
    set(CMAKE_AUTORCC ON)
    
    set(CMAKE_CXX_STANDARD 11)
    set(CMAKE_CXX_STANDARD_REQUIRED ON)
    
    # QtCreator supports the following variables for Android, which are identical to qmake Android variables.
    # Check http://doc.qt.io/qt-5/deployment-android.html for more information.
    # They need to be set before the find_package(Qt5 ...) call.
    
    #if(ANDROID)
    #    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
    #    if (ANDROID_ABI STREQUAL "armeabi-v7a")
    #        set(ANDROID_EXTRA_LIBS
    #            ${
        CMAKE_CURRENT_SOURCE_DIR}/path/to/libcrypto.so
    #            ${
        CMAKE_CURRENT_SOURCE_DIR}/path/to/libssl.so)
    #    endif()
    #endif()
    
    find_package(Qt5 COMPONENTS Widgets REQUIRED)
    
    if(ANDROID)
      add_library(cmake_test SHARED
        main.cpp
        mainwindow.cpp
        mainwindow.h
        mainwindow.ui
      )
    else()
      add_executable(cmake_test
        main.cpp
        mainwindow.cpp
        mainwindow.h
        mainwindow.ui
      )
    endif()
    
    target_link_libraries(cmake_test PRIVATE Qt5::Widgets)

[https://doc.qt.io/qt-5/cmake-get-started.html\#build-a-gui-executable][https_doc.qt.io_qt-5_cmake-get-started.html_build-a-gui-executable]  
[https://doc.qt.io/qt-5.9/cmake-manual.html ][https_doc.qt.io_qt-5.9_cmake-manual.html]  
[https://doc.qt.io/qtcreator/creator-project-cmake.html][https_doc.qt.io_qtcreator_creator-project-cmake.html]  
[https://cmake.org/cmake/help/latest/manual/cmake-qt.7.html][https_cmake.org_cmake_help_latest_manual_cmake-qt.7.html]

[Link 1]: https://doc.qt.io/qt-5/cmake-manual.html
[qmake _ shadow build]: https://blog.csdn.net/dbzhang800/article/details/6343838
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 1]: /images/20221119/06f9d69a879b474a8cf73a5bda8482ad.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 2]: /images/20221119/c9aa0ca9e27b43df93795d03c44380ee.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 4]: /images/20221119/1f702540d80e455e97e742634a4192c3.png
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 6]: /images/20221119/2cd0371dc5d24f5ba04ce25ea7411d50.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 7]: /images/20221119/939191e51495405fb89b5c51f1f1db68.png
[20210120114630798.png]: /images/20221119/e4f5f0de197d49858861477a502a28a3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poaXpoZW5nZ3Vhbg_size_16_color_FFFFFF_t_70 8]: /images/20221119/3675b944c2d64bff831929e240a7bfbd.png
[https_doc.qt.io_qt-5_cmake-get-started.html_build-a-gui-executable]: https://doc.qt.io/qt-5/cmake-get-started.html#build-a-gui-executable
[https_doc.qt.io_qt-5.9_cmake-manual.html]: https://doc.qt.io/qt-5.9/cmake-manual.html
[https_doc.qt.io_qtcreator_creator-project-cmake.html]: https://doc.qt.io/qtcreator/creator-project-cmake.html
[https_cmake.org_cmake_help_latest_manual_cmake-qt.7.html]: https://cmake.org/cmake/help/latest/manual/cmake-qt.7.html