win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410 else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410d else:unix: LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410

这段代码是什么意思呢？

这段代码是在Qt项目的.pro文件中设置OpenCV库的链接路径和名称。其中，-L表示链接路径，-lopencv_world410表示链接的库文件名。根据不同的编译模式（release或debug），链接不同的库文件（opencv_world410或opencv_world410d）。针对不同的操作系统平台，链接不同的库文件（例如在Unix系统中，链接的库文件名可能与在Windows系统中不同）。

相关问题

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410 else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410d else:unix: LIBS += -L$$PWD/'../../../open cv/opencv/build/x64/vc15/lib/' -lopencv_world410这样链接会出现打包在别的电脑缺少这个库的情况吗，怎么解决或优化呢

是的，如果将Qt项目打包到另一台电脑上运行，但是另一台电脑上没有安装OpenCV库，那么程序就会出现链接库文件失败的错误。

为了解决这个问题，可以将OpenCV库一起打包到程序中。一种方法是将OpenCV库复制到Qt项目中，并在.pro文件中添加以下代码：

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/libs/opencv_world410 -lopencv_world410
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/libs/opencv_world410d -lopencv_world410d
else:unix: LIBS += -L$$PWD/libs/opencv_world410 -lopencv_world410

其中，$$PWD表示当前.pro文件所在的路径，libs是一个文件夹，用来存放库文件。这样，在打包程序时，将OpenCV库和程序一起打包即可。

另一种方法是使用Qt的插件机制，在程序启动时动态加载库文件。这样可以减小程序的体积。可以在程序中检查OpenCV库是否存在，如果不存在则自动下载并加载库文件。

将QT += core QT -= gui CONFIG += c++11 TARGET = UavRectifyLoadLIb CONFIG += console CONFIG -= app_bundle TEMPLATE = app SOURCES += main.cpp # The following define makes your compiler emit warnings if you use # any feature of Qt which as been marked deprecated (the exact warnings # depend on your compiler). Please consult the documentation of the # deprecated API in order to know how to port your code away from it. DEFINES += QT_DEPRECATED_WARNINGS win32{ CONFIG(debug, debug|release){ DESTDIR = $$PWD/../../../../RasterManager/bin/Debug } else{ DESTDIR = $$PWD/../../../../RasterManager/bin/release } INCLUDEPATH += $$PWD/../../../include/gdal1101 DEPENDPATH += $$PWD/../../../include/gdal1101 } else{ CONFIG(debug, debug|release){ DESTDIR = $$PWD/../../../product/release32 } else{ DESTDIR = $$PWD/../../../product/release32 } } # You can also make your code fail to compile if you use deprecated APIs. # In order to do so, uncomment the following line. # You can also select to disable deprecated APIs only up to a certain version of Qt. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0 unix:!macx: LIBS += -L$$PWD/../../../product/release32/ -lUAVAutoRectifyMt -lUAVAutoRectify -lUAVAutoRectifyFi INCLUDEPATH += $$PWD/../include DEPENDPATH += $$PWD/../include unix:!macx: LIBS += -L$$PWD/../../../lib/opencvf249/ -lopencv_core unix:!macx: LIBS += -L$$PWD/../../../lib/opencvf249/ -lopencv_highgui unix:!macx: LIBS += -L$$PWD/../../../lib/opencvf249/ -lopencv_imgproc INCLUDEPATH += $$PWD/../../../lib/opencvf249 DEPENDPATH += $$PWD/../../../lib/opencvf249 unix:!macx: LIBS += -L$$PWD/../../../../../../../usr/local/lib/ -lopencv_core #unix:!macx: LIBS += -L$$PWD/../../../../../../../usr/local/lib/ -lopencv_highgui unix:!macx: LIBS += -L$$PWD/../../../../../../../usr/local/lib/ -lopencv_imgproc unix:!macx: LIBS += -L$$PWD/../../../../../../../usr/local/lib/ -lopencv_features2d unix:!macx: LIBS += -L$$PWD/../../../../../../../usr/local/lib/ -lopencv_imgcodecs INCLUDEPATH += $$PWD/../../../../../../../usr/local/include DEPENDPATH += $$PWD/../../../../../../../usr/local/include unix:!macx: LIBS += -L$$PWD/../../../product/release32/ -lDEMDriver unix:!macx: LIBS += -L$$PWD/../../../product/release32/ -lProjection unix:!macx: LIBS += -L$$PWD/../../../product/release32/ -lIImage_gC QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO QMAKE_LFLAGS_RELEASE = $$QMAKE_LFLAGS_RELEASE_WITH_DEBUGINFO 转为cmake格式

根据给出的代码，可以将其转化为以下CMake代码：

cmake_minimum_required(VERSION 3.5)

project(UavRectifyLoadLIb LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

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

find_package(Qt5Core REQUIRED)

add_executable(UavRectifyLoadLIb
    main.cpp
)

target_link_libraries(UavRectifyLoadLIb
    PRIVATE
        Qt5::Core
        UAVAutoRectifyMt
        UAVAutoRectify
        UAVAutoRectifyFi
        DEMDriver
        Projection
        IImage_gC
        opencv_core
        opencv_highgui
        opencv_imgproc
        opencv_features2d
        opencv_imgcodecs
)

target_include_directories(UavRectifyLoadLIb
    PRIVATE
        ${CMAKE_CURRENT_SOURCE_DIR}/../../../include/gdal1101
        ${CMAKE_CURRENT_SOURCE_DIR}/../include
        ${CMAKE_CURRENT_SOURCE_DIR}/../../../lib/opencvf249
        ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../usr/local/include
)

if(UNIX AND NOT APPLE)
    target_link_directories(UavRectifyLoadLIb
        PRIVATE
            ${CMAKE_CURRENT_SOURCE_DIR}/../../../product/release32
            ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../usr/local/lib
    )
endif()

if(WIN32)
    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
        set_target_properties(UavRectifyLoadLIb PROPERTIES
            RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_CURRENT_SOURCE_DIR}/../../../../RasterManager/bin/Debug
        )
    else()
        set_target_properties(UavRectifyLoadLIb PROPERTIES
            RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_CURRENT_SOURCE_DIR}/../../../../RasterManager/bin/release
        )
    endif()
else()
    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
        set_target_properties(UavRectifyLoadLIb PROPERTIES
            RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_CURRENT_SOURCE_DIR}/../../../product/release32
        )
    else()
        set_target_properties(UavRectifyLoadLIb PROPERTIES
            RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_CURRENT_SOURCE_DIR}/../../../product/release32
        )
    endif()
endif()