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lnk2019 with opencv treshold

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  • S Offline
    S Offline
    superdu
    wrote on last edited by superdu
    #3

    yes sorry:

    image.obj:-1: erreur : LNK2019: external symbol unresolve "double __cdecl cv::threshold(class cv::debug_build_guard::_InputArray const &,class cv::debug_build_guard::_OutputArray const &,double,double,int)" (?threshold@cv@@YANAEBV_InputArray@debug_build_guard@1@AEBV_OutputArray@31@NNH@Z)reference in function "public: class QImage __cdecl Image::starsPosition(void)" (?starsPosition@Image@@QEAA?AVQImage@@XZ)

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #4

      Hi,

      Might be a silly question but are you also using a 64 bit build of Qt ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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      • S Offline
        S Offline
        superdu
        wrote on last edited by
        #5

        yes yes i use 64bit qt version

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by SGaist
          #6

          @superdu said in lnk2019 with opencv treshold:

          LIBS += "C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_calib3d.lib"

          Usually it's rather written as:

          LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/" -lopencv_calib3d
          

          Can you test that ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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          • S Offline
            S Offline
            superdu
            wrote on last edited by
            #7

            i originaly wrote it like that. That didn't work too.

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #8

              Is it the only symbol that fails the build ?

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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              • S Offline
                S Offline
                superdu
                wrote on last edited by
                #9

                if i use imshow, i have this problem too. but i can use Mat. By the way i use msvc2019 (32 and 64). at the beginning i thought it was the problem. So i tried to compile it with msvc2015 but still the same problem... and i can use this functions on visual studio... the only difference is the IDE so i think i miss something but what...

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #10

                  Just to make sure we are on the same base, can you describe your setup exactly ?
                  Which IDE are you using ?
                  Which exact compiler are you using ?
                  Which compiler was used for OpenCV and for Qt ?

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                  • S Offline
                    S Offline
                    superdu
                    wrote on last edited by
                    #11

                    for my project i use QtCreator but sometime, juste for test i use visual studio.
                    for openCV i used the package manager vcpkg but as that work on my vs i think its compile with msvc2019.
                    qt i just used the installer. i let here systems info from QtCreator:

                    {noformat}
                    Qt 5.15.2 (x86_64-little_endian-llp64 shared (dynamic) release build; by MSVC 2019) on "windows"
                    OS: Windows 10 Version 2009 [winnt version 10.0.19042]

                    Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2

                    Environment:
                    Qt5_DIR="D:\Qt\5.15.2\msvc2019_64"
                    QtMsBuild="C:\Users\antoi\AppData\Local\QtMsBuild"

                    Features: QT_NO_EXCEPTIONS

                    Library info:
                    PrefixPath: D:\Qt\Tools\QtCreator\bin
                    DocumentationPath: D:\Qt\Tools\QtCreator\bin\doc
                    HeadersPath: D:\Qt\Tools\QtCreator\bin\include
                    LibrariesPath: D:\Qt\Tools\QtCreator\bin
                    LibraryExecutablesPath: D:\Qt\Tools\QtCreator\bin\bin
                    BinariesPath: D:\Qt\Tools\QtCreator\bin
                    PluginsPath: D:\Qt\Tools\QtCreator\bin\plugins
                    ImportsPath: D:\Qt\Tools\QtCreator\bin\imports
                    Qml2ImportsPath: D:\Qt\Tools\QtCreator\bin\qml
                    ArchDataPath: D:\Qt\Tools\QtCreator\bin
                    DataPath: D:\Qt\Tools\QtCreator\bin
                    TranslationsPath: D:\Qt\Tools\QtCreator\bin\translations
                    ExamplesPath: D:\Qt\Tools\QtCreator\bin\examples
                    TestsPath: D:\Qt\Tools\QtCreator\bin\tests
                    SettingsPath:

                    Standard paths [... denote writable entry]:
                    DesktopLocation: "Desktop" C:\Users\antoi\OneDrive\Bureau
                    DocumentsLocation: "Documents" C:\Users\antoi\OneDrive\Documents
                    FontsLocation: "Fonts" C:\WINDOWS\Fonts
                    ApplicationsLocation: "Applications" C:\Users\antoi\AppData\Roaming\Microsoft\Windows\Start Menu\Programs
                    MusicLocation: "Music" C:\Users\antoi\Music
                    MoviesLocation: "Movies" C:\Users\antoi\Videos
                    PicturesLocation: "Pictures" C:\Users\antoi\OneDrive\Images
                    TempLocation: "Temporary Directory" C:\Users\antoi\AppData\Local\Temp
                    HomeLocation: "Home" C:\Users\antoi
                    AppLocalDataLocation: "Application Data" C:\Users\antoi\AppData\Local\QtProject\qtdiag C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag
                    CacheLocation: "Cache" C:\Users\antoi\AppData\Local\QtProject\qtdiag\cache
                    GenericDataLocation: "Shared Data" C:\Users\antoi\AppData\Local C:\ProgramData D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data
                    RuntimeLocation: "Runtime" C:\Users\antoi
                    ConfigLocation: "Configuration" C:\Users\antoi\AppData\Local\QtProject\qtdiag C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag
                    DownloadLocation: "Download" C:\Users\antoi\Downloads
                    GenericCacheLocation: "Shared Cache" C:\Users\antoi\AppData\Local\cache
                    GenericConfigLocation: "Shared Configuration" C:\Users\antoi\AppData\Local C:\ProgramData D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data
                    AppDataLocation: "Application Data" C:\Users\antoi\AppData\Roaming\QtProject\qtdiag C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag
                    AppConfigLocation: "Application Configuration" C:\Users\antoi\AppData\Local\QtProject\qtdiag C:\ProgramData\QtProject\qtdiag D:\Qt\Tools\QtCreator\bin D:\Qt\Tools\QtCreator\bin\data D:\Qt\Tools\QtCreator\bin\data\QtProject\qtdiag

                    File selectors (increasing order of precedence):
                    fr_FR windows winnt

                    Network:
                    Using "OpenSSL 1.1.1d 10 Sep 2019", version: 0x1010104f

                    Platform capabilities: ThreadedPixmaps OpenGL ThreadedOpenGL WindowMasks MultipleWindows ForeignWindows NonFullScreenWindows NativeWidgets WindowManagement RasterGLSurface AllGLFunctionsQueryable

                    Style hints:
                    mouseDoubleClickInterval: 500
                    mousePressAndHoldInterval: 800
                    startDragDistance: 10
                    startDragTime: 500
                    startDragVelocity: 0
                    keyboardInputInterval: 400
                    keyboardAutoRepeatRate: 32
                    cursorFlashTime: 1060
                    showIsFullScreen: 0
                    showIsMaximized: 0
                    passwordMaskDelay: 0
                    passwordMaskCharacter: U+25CF
                    fontSmoothingGamma: 1
                    useRtlExtensions: 0
                    setFocusOnTouchRelease: 0
                    tabFocusBehavior: Qt::TabFocusAllControls
                    singleClickActivation: 0

                    Additional style hints (QPlatformIntegration):
                    ReplayMousePressOutsidePopup: 1

                    Theme:
                    Platforms requested : windows
                    available : snap,flatpak,xdgdesktopportal
                    Styles requested : WindowsVista,Windows
                    available : windowsvista,Windows,Fusion
                    System font : "MS Shell Dlg 2" 8
                    Native file dialog

                    Fonts:
                    General font : "MS Shell Dlg 2" 8
                    Fixed font : "Courier New" 9
                    Title font : "MS Shell Dlg 2" 8
                    Smallest font: "MS Shell Dlg 2" 8

                    Palette:
                    QPalette::WindowText: #ff000000
                    QPalette::Button: #fff0f0f0
                    QPalette::Light: #ffffffff
                    QPalette::Midlight: #ffe3e3e3
                    QPalette::Dark: #ffa0a0a0
                    QPalette::Mid: #ffa0a0a0
                    QPalette::Text: #ff000000
                    QPalette::BrightText: #ffffffff
                    QPalette::ButtonText: #ff000000
                    QPalette::Base: #ffffffff
                    QPalette::Window: #fff0f0f0
                    QPalette::Shadow: #ff696969
                    QPalette::Highlight: #ff0078d7
                    QPalette::HighlightedText: #ffffffff
                    QPalette::Link: #ff0000ff
                    QPalette::LinkVisited: #ffff00ff
                    QPalette::AlternateBase: #ffe9e7e3
                    QPalette::NoRole: #ff000000
                    QPalette::ToolTipBase: #ffffffdc
                    QPalette::ToolTipText: #ff000000
                    QPalette::PlaceholderText: #80000000

                    Screens: 1, High DPI scaling: inactive

                    0 "\.\DISPLAY1" Depth: 32 Primary: yes

                    Manufacturer:
                    Model:
                    Serial number:
                    Geometry: 1920x1080+0+0 Available: 1920x1040+0+0
                    Physical size: 382x215 mm Refresh: 144 Hz Power state: 0
                    Physical DPI: 127.665,127.591 Logical DPI: 96,96 Subpixel_None
                    DevicePixelRatio: 1 Pixel density: 1
                    Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0

                    Dynamic GL LibGL Vendor: NVIDIA Corporation
                    Renderer: NVIDIA GeForce RTX 2060/PCIe/SSE2
                    Version: 4.6.0 NVIDIA 466.63
                    Shading language: 4.60 NVIDIA
                    Format: Version: 4.6 Profile: 2 Swap behavior: 2 Buffer size (RGBA): 8,8,8,8 Depth buffer: 24 Stencil buffer: 8
                    Profile: None (QOpenGLFunctions_4_6)

                    Vulkan instance available
                    Supported instance extensions:
                    VK_KHR_device_group_creation, version 1
                    VK_KHR_display, version 23
                    VK_KHR_external_fence_capabilities, version 1
                    VK_KHR_external_memory_capabilities, version 1
                    VK_KHR_external_semaphore_capabilities, version 1
                    VK_KHR_get_display_properties2, version 1
                    VK_KHR_get_physical_device_properties2, version 2
                    VK_KHR_get_surface_capabilities2, version 1
                    VK_KHR_surface, version 25
                    VK_KHR_surface_protected_capabilities, version 1
                    VK_KHR_win32_surface, version 6
                    VK_EXT_debug_report, version 9
                    VK_EXT_debug_utils, version 2
                    VK_EXT_swapchain_colorspace, version 4
                    VK_NV_external_memory_capabilities, version 1
                    Supported layers:
                    VK_LAYER_NV_optimus, version 1, spec version 1.2.168, NVIDIA Optimus layer
                    VK_LAYER_VALVE_steam_overlay, version 1, spec version 1.2.136, Steam Overlay Layer
                    VK_LAYER_VALVE_steam_fossilize, version 1, spec version 1.2.136, Steam Pipeline Caching Layer
                    VK_LAYER_EOS_Overlay, version 1, spec version 1.2.136, Vulkan overlay layer for Epic Online Services
                    VK_LAYER_EOS_Overlay, version 1, spec version 1.2.136, Vulkan overlay layer for Epic Online Services
                    Available physical devices:
                    API version 1.2.168, vendor 0x10DE, device 0x1F11, NVIDIA GeForce RTX 2060, type 2, driver version 466.252.0

                    GPU #1:
                    Card name : NVIDIA GeForce RTX 2060
                    Driver Name : nvldumdx.dll
                    Driver Version : 27.21.14.6663
                    Vendor ID : 0x10DE
                    Device ID : 0x1F11
                    SubSys ID : 0x3FFD17AA
                    Revision ID : 0x00A1

                    Qt Rendering Hardware Interface supported backends:
                    OpenGL (with default QSurfaceFormat):
                    Min Texture Size: 1
                    Max Texture Size: 32768
                    Max Color Attachments: 8
                    Frames in Flight: 1
                    Uniform Buffer Alignment: 1
                    Supported MSAA sample counts: 1,2,4,8,16,32
                    Features:
                    - MultisampleTexture
                    v MultisampleRenderBuffer
                    - DebugMarkers
                    - Timestamps
                    v Instancing
                    - CustomInstanceStepRate
                    v PrimitiveRestart
                    v NonDynamicUniformBuffers
                    v NonFourAlignedEffectiveIndexBufferOffset
                    v NPOTTextureRepeat
                    - RedOrAlpha8IsRed
                    v ElementIndexUint
                    v Compute
                    v WideLines
                    v VertexShaderPointSize
                    v BaseVertex
                    - BaseInstance
                    v TriangleFanTopology
                    v ReadBackNonUniformBuffer
                    v ReadBackNonBaseMipLevel
                    Texture formats: RGBA8 BGRA8 R8 R16 RED_OR_ALPHA8 RGBA16F RGBA32F R16F R32F D16 D32F BC1 BC2 BC3 ETC2_RGB8 ETC2_RGB8A1 ETC2_RGBA8 ASTC_4x4 ASTC_5x4 ASTC_5x5 ASTC_6x5 ASTC_6x6 ASTC_8x5 ASTC_8x6 ASTC_8x8 ASTC_10x5 ASTC_10x6 ASTC_10x8 ASTC_10x10 ASTC_12x10 ASTC_12x12
                    Vulkan:
                    Min Texture Size: 1
                    Max Texture Size: 32768
                    Max Color Attachments: 8
                    Frames in Flight: 2
                    Uniform Buffer Alignment: 64
                    Supported MSAA sample counts: 1,2,4,8
                    Features:
                    v MultisampleTexture
                    v MultisampleRenderBuffer
                    - DebugMarkers
                    v Timestamps
                    v Instancing
                    - CustomInstanceStepRate
                    v PrimitiveRestart
                    v NonDynamicUniformBuffers
                    v NonFourAlignedEffectiveIndexBufferOffset
                    v NPOTTextureRepeat
                    v RedOrAlpha8IsRed
                    v ElementIndexUint
                    v Compute
                    v WideLines
                    v VertexShaderPointSize
                    v BaseVertex
                    v BaseInstance
                    v TriangleFanTopology
                    v ReadBackNonUniformBuffer
                    v ReadBackNonBaseMipLevel
                    Texture formats: RGBA8 BGRA8 R8 R16 RED_OR_ALPHA8 RGBA16F RGBA32F R16F R32F D16 D32F BC1 BC2 BC3 BC4 BC5 BC6H BC7
                    Direct3D 11:
                    Min Texture Size: 1
                    Max Texture Size: 16384
                    Max Color Attachments: 8
                    Frames in Flight: 1
                    Uniform Buffer Alignment: 256
                    Supported MSAA sample counts: 1,2,4,8
                    Features:
                    v MultisampleTexture
                    v MultisampleRenderBuffer
                    v DebugMarkers
                    v Timestamps
                    v Instancing
                    v CustomInstanceStepRate
                    v PrimitiveRestart
                    - NonDynamicUniformBuffers
                    v NonFourAlignedEffectiveIndexBufferOffset
                    v NPOTTextureRepeat
                    v RedOrAlpha8IsRed
                    v ElementIndexUint
                    v Compute
                    - WideLines
                    - VertexShaderPointSize
                    v BaseVertex
                    v BaseInstance
                    - TriangleFanTopology
                    v ReadBackNonUniformBuffer
                    v ReadBackNonBaseMipLevel
                    Texture formats: RGBA8 BGRA8 R8 R16 RED_OR_ALPHA8 RGBA16F RGBA32F R16F R32F D16 D32F BC1 BC2 BC3 BC4 BC5 BC6H BC7

                    Plugin information:

                    • Android 4.15.0
                    • AutoTest 4.15.0
                      AutotoolsProjectManager 4.15.0
                      BareMetal 4.15.0
                    • Bazaar 4.15.0
                      Beautifier 4.15.0
                    • BinEditor 4.15.0
                    • Bookmarks 4.15.0
                      Boot2Qt 4.15.0
                    • CMakeProjectManager 4.15.0
                    • CVS 4.15.0
                    • ClangCodeModel 4.15.0
                      ClangFormat 4.15.0
                    • ClangTools 4.15.0
                    • ClassView 4.15.0
                      ClearCase 4.15.0
                    • CodePaster 4.15.0
                      CompilationDatabaseProjectManager 4.15.0
                      Conan 4.15.0
                    • Core 4.15.0
                    • CppEditor 4.15.0
                    • CppTools 4.15.0
                      Cppcheck 4.15.0
                    • CtfVisualizer 4.15.0
                    • Debugger 4.15.0
                    • Designer 4.15.0
                    • DiffEditor 4.15.0
                      EmacsKeys 4.15.0
                    • FakeVim 4.15.0
                    • GLSLEditor 4.15.0
                    • GenericProjectManager 4.15.0
                    • Git 4.15.0
                      HelloWorld 4.15.0
                    • Help 4.15.0
                    • ImageViewer 4.15.0
                    • IncrediBuild 4.15.0
                      Ios 4.15.0
                    • LanguageClient 4.15.0
                    • Macros 4.15.0
                    • Marketplace 4.15.0
                      McuSupport 4.15.0
                    • Mercurial 4.15.0
                      MesonProjectManager 4.15.0
                    • ModelEditor 4.15.0
                      Nim 4.15.0
                    • PerfProfiler 4.15.0
                      Perforce 4.15.0
                    • ProjectExplorer 4.15.0
                    • Python 4.15.0
                    • QbsProjectManager 4.15.0
                    • QmakeProjectManager 4.15.0
                    • QmlDesigner 4.15.0
                    • QmlJSEditor 4.15.0
                    • QmlJSTools 4.15.0
                    • QmlPreview 4.15.0
                    • QmlProfiler 4.15.0
                    • QmlProjectManager 4.15.0
                    • Qnx 4.15.0
                    • QtSupport 4.15.0
                    • RemoteLinux 4.15.0
                    • ResourceEditor 4.15.0
                    • ScxmlEditor 4.15.0
                      SerialTerminal 4.15.0
                      SilverSearcher 4.15.0
                      StudioWelcome 4.15.0
                    • Subversion 4.15.0
                    • TaskList 4.15.0
                    • TextEditor 4.15.0
                      Todo 4.15.0
                    • UpdateInfo 4.15.0
                    • Valgrind 4.15.0
                    • VcsBase 4.15.0
                    • WebAssembly 4.15.0
                    • Welcome 4.15.0
                    • WinRt 4.15.0

                    Qt Creator 4.15.0
                    Basé sur Qt 5.15.2 (MSVC 2019, 64 bit)
                    From revision 978f6caf1e
                    Built on May 4 2021 01:16:56

                    {noformat}

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                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      Ok... nothing stands out as wrong.

                      Can you start from a default Qt project and just one OpenCV method there ?

                      It might be easier to debug your issue.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                      • S Offline
                        S Offline
                        superdu
                        wrote on last edited by superdu
                        #13

                        ok so here the code (thank you for your time by the way):

                        cpp

                        #include "mainwindow.h"
                        #include "ui_mainwindow.h"
                        
                        MainWindow::MainWindow(QWidget *parent)
                            : QMainWindow(parent)
                            , ui(new Ui::MainWindow)
                        {
                            ui->setupUi(this);
                            Mat new_img = Mat::zeros(25, 25, CV_16U);
                            Mat dest;
                        
                            threshold(new_img,dest,200,255,THRESH_BINARY | THRESH_OTSU);
                        
                        }
                        
                        MainWindow::~MainWindow()
                        {
                            delete ui;
                        }
                        
                        
                        

                        header

                        #ifndef MAINWINDOW_H
                        #define MAINWINDOW_H
                        
                        #include <QMainWindow>
                        #include <opencv2/core.hpp>
                        #include <opencv2/highgui.hpp>
                        #include <opencv2/imgcodecs.hpp>
                        #include <opencv2/opencv.hpp>
                        #include "opencv2/imgproc.hpp"
                        
                        using namespace cv;
                        
                        QT_BEGIN_NAMESPACE
                        namespace Ui { class MainWindow; }
                        QT_END_NAMESPACE
                        
                        class MainWindow : public QMainWindow
                        {
                            Q_OBJECT
                        
                        public:
                            MainWindow(QWidget *parent = nullptr);
                            ~MainWindow();
                        
                        private:
                            Ui::MainWindow *ui;
                        };
                        #endif // MAINWINDOW_H
                        
                        

                        pro

                        QT       += core gui
                        
                        greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
                        
                        CONFIG += c++11
                        
                        # You can make your code fail to compile if it uses deprecated APIs.
                        # In order to do so, uncomment the following line.
                        #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
                        
                        SOURCES += \
                            main.cpp \
                            mainwindow.cpp
                        
                        HEADERS += \
                            mainwindow.h
                        
                        FORMS += \
                            mainwindow.ui
                        
                        INCLUDEPATH += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/include
                        
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_calib3d.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_core.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_dnn.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_features2d.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_flann.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_highgui.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_imgcodecs.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_imgproc.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_ml.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_objdetect.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_photo.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_stitching.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_video.lib
                        LIBS += C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib/opencv_videoio.lib
                        
                        
                        TRANSLATIONS += \
                            test_fr_FR.ts
                        CONFIG += lrelease
                        CONFIG += embed_translations
                        
                        # Default rules for deployment.
                        qnx: target.path = /tmp/$${TARGET}/bin
                        else: unix:!android: target.path = /opt/$${TARGET}/bin
                        !isEmpty(target.path): INSTALLS += target
                        
                        

                        the code reproduce the problem for me:

                        mainwindow.obj:-1: erreur : LNK2019: symbole externe non r‚solu "double __cdecl cv::threshold(class cv::debug_build_guard::_InputArray const &,class cv::debug_build_guard::_OutputArray const &,double,double,int)" (?threshold@cv@@YANAEBV_InputArray@debug_build_guard@1@AEBV_OutputArray@31@NNH@Z) r‚f‚renc‚ dans la fonction "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)

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                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #14

                          Does the build output show that the libraries are currently linked ?

                          By the way, you should move all your includes to the .cpp file. There's nothing in the header that uses OpenCV.

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                          1 Reply Last reply
                          1
                          • S Offline
                            S Offline
                            superdu
                            wrote on last edited by
                            #15

                            here the compile output:

                            21:18:53: Running steps for project test...
                            21:18:53: Configuration unchanged, skipping qmake step.
                            21:18:53: Starting: "D:\Qt\Tools\QtCreator\bin\jom.exe"
                            D:\Qt\Tools\QtCreator\bin\jom.exe -f Makefile.Debug
                            link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:WINDOWS "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='' processorArchitecture=''" /MANIFEST:embed /OUT:debug\test.exe @C:\Users\antoi\AppData\Local\Temp\test.exe.16732.0.jom
                            mainwindow.obj : error LNK2019: unresolved external symbol "double __cdecl cv::threshold(class cv::debug_build_guard::_InputArray const &,class cv::debug_build_guard::_OutputArray const &,double,double,int)" (?threshold@cv@@YANAEBV_InputArray@debug_build_guard@1@AEBV_OutputArray@31@NNH@Z) referenced in function "public: __cdecl MainWindow::MainWindow(class QWidget *)" (??0MainWindow@@QEAA@PEAVQWidget@@@Z)
                            debug\test.exe : fatal error LNK1120: 1 unresolved externals
                            jom: C:\Users\antoi\OneDrive\Documents\QTtest\build-test-Desktop_Qt_5_15_2_MSVC2019_64bit-Debug\Makefile.Debug [debug\test.exe] Error 1120
                            jom: C:\Users\antoi\OneDrive\Documents\QTtest\build-test-Desktop_Qt_5_15_2_MSVC2019_64bit-Debug\Makefile [debug] Error 2
                            21:18:53: The process "D:\Qt\Tools\QtCreator\bin\jom.exe" exited with code 2.
                            Error while building/deploying project test (kit: Desktop Qt 5.15.2 MSVC2019 64bit)
                            When executing step "Make"
                            21:18:53: Elapsed time: 00:00.

                            1 Reply Last reply
                            0
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #16

                              Ok... does the Makefile contain any references to OpenCV ?

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              1 Reply Last reply
                              0
                              • S Offline
                                S Offline
                                superdu
                                wrote on last edited by
                                #17

                                no indeed... they are no reference to opencv:

                                #############################################################################

                                Makefile for building: test

                                Generated by qmake (3.1) (Qt 5.15.2)

                                Project: ..\test\test.pro

                                Template: app

                                Command: D:\Qt\5.15.2\msvc2019_64\bin\qmake.exe -o Makefile ..\test\test.pro -spec win32-msvc "CONFIG+=debug" "CONFIG+=qml_debug"

                                #############################################################################

                                MAKEFILE = Makefile

                                EQ = =

                                first: debug
                                install: debug-install
                                uninstall: debug-uninstall
                                QMAKE = D:\Qt\5.15.2\msvc2019_64\bin\qmake.exe
                                DEL_FILE = del
                                CHK_DIR_EXISTS= if not exist
                                MKDIR = mkdir
                                COPY = copy /y
                                COPY_FILE = copy /y
                                COPY_DIR = xcopy /s /q /y /i
                                INSTALL_FILE = copy /y
                                INSTALL_PROGRAM = copy /y
                                INSTALL_DIR = xcopy /s /q /y /i
                                QINSTALL = D:\Qt\5.15.2\msvc2019_64\bin\qmake.exe -install qinstall
                                QINSTALL_PROGRAM = D:\Qt\5.15.2\msvc2019_64\bin\qmake.exe -install qinstall -exe
                                DEL_FILE = del
                                SYMLINK = $(QMAKE) -install ln -f -s
                                DEL_DIR = rmdir
                                MOVE = move
                                IDC = idc
                                IDL = midl
                                ZIP = zip -r -9
                                DEF_FILE =
                                RES_FILE =
                                SED = $(QMAKE) -install sed
                                MOVE = move
                                SUBTARGETS =
                                debug
                                release

                                debug: $(MAKEFILE) FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug
                                debug-make_first: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug
                                debug-all: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug all
                                debug-clean: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug clean
                                debug-distclean: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug distclean
                                debug-install: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug install
                                debug-uninstall: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug uninstall
                                release: $(MAKEFILE) FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release
                                release-make_first: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release
                                release-all: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release all
                                release-clean: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release clean
                                release-distclean: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release distclean
                                release-install: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release install
                                release-uninstall: FORCE
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release uninstall

                                Makefile: ..\test\test.pro D:\Qt\5.15.2\msvc2019_64\mkspecs\win32-msvc\qmake.conf D:\Qt\5.15.2\msvc2019_64\mkspecs\features\spec_pre.prf
                                ...
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                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dextras_private.pri
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dinput.pri
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dinput_private.pri
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dlogic.pri
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                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dquick.pri
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dquick_private.pri
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dquickanimation.pri
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                                D:\Qt\5.15.2\msvc2019_64\mkspecs\modules\qt_lib_3dquickinput.pri
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                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\spec_post.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\exclusive_builds.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\common\msvc-version.conf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\toolchain.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\default_pre.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\win32\default_pre.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\resolve_config.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\exclusive_builds_post.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\default_post.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\lrelease.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\qml_debug.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\precompile_header.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\warn_on.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\qt.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\resources_functions.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\resources.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\moc.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\win32\opengl.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\uic.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\qmake_use.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\file_copies.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\win32\windows.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\testcase_targets.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\exceptions.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\yacc.prf:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\lex.prf:
                                ..\test\test.pro:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Widgets.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Gui.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Core.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\qtmain.prl:
                                .qmake.stash:
                                D:\Qt\5.15.2\msvc2019_64\mkspecs\features\build_pass.prf:
                                debug\qmake_qmake_qm_files.qrc:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Widgetsd.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Guid.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\Qt5Cored.prl:
                                D:\Qt\5.15.2\msvc2019_64\lib\qtmaind.prl:
                                release\qmake_qmake_qm_files.qrc:
                                qmake: FORCE
                                @$(QMAKE) -o Makefile ..\test\test.pro -spec win32-msvc "CONFIG+=debug" "CONFIG+=qml_debug"

                                qmake_all: FORCE

                                make_first: debug-make_first release-make_first FORCE
                                all: debug-all release-all FORCE
                                clean: debug-clean release-clean FORCE
                                -$(DEL_FILE) test.vc.pdb
                                -$(DEL_FILE) test.ilk
                                -$(DEL_FILE) test.idb
                                distclean: debug-distclean release-distclean FORCE
                                -$(DEL_FILE) Makefile
                                -$(DEL_FILE) .qmake.stash test.pdb

                                debug-mocclean:
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug mocclean
                                release-mocclean:
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release mocclean
                                mocclean: debug-mocclean release-mocclean

                                debug-mocables:
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Debug mocables
                                release-mocables:
                                @set MAKEFLAGS=$(MAKEFLAGS)
                                $(MAKE) -f $(MAKEFILE).Release mocables
                                mocables: debug-mocables release-mocables

                                check: first

                                benchmark: first
                                FORCE:

                                $(MAKEFILE).Debug: Makefile
                                $(MAKEFILE).Release: Makefile

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #18

                                  You are missing the "-l" in your LIBS lines.

                                  Interested in AI ? www.idiap.ch
                                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                  • S Offline
                                    S Offline
                                    superdu
                                    wrote on last edited by
                                    #19

                                    hum, but they are presents in makefile.debug

                                    i also try again this notation but still the same problem

                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_calib3d
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_core
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_dnn
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_features2d
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_flann
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_highgui
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_imgcodecs
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_imgproc
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_ml
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_objdetect
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_photo
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_stitching
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_video
                                    LIBS += -L"C:/src/vcpkg/vcpkg/packages/opencv4_x64-windows/lib" -lopencv_videoio
                                    
                                    
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                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #20

                                      So if you build in debug mode it works ?

                                      Interested in AI ? www.idiap.ch
                                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                      • S Offline
                                        S Offline
                                        superdu
                                        wrote on last edited by
                                        #21

                                        no... i dont know why but i feel if we find the problem that will be something really stupid. and if not i will just try to compile by hand opencv but that should work like that

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                                        • SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #22

                                          Are these static or dynamic librairies ?

                                          In any case, what I would do is simplify things with the LIBS part to only link to opencv_core and only use symbols from that library in the sample application.

                                          This will restrict the scope of the issue.

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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