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Qt and Tesseract Linkage

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  • O Offline
    O Offline
    OlegD
    wrote on 26 May 2022, 14:59 last edited by
    #1

    Hello! How can i amend the pro file to make the program work?

    Googled a lot about QT and Tesseract, could not find a solution yet.
    Please advise

    QT += core
    QT -= gui

    CONFIG += c++11

    TARGET = openCV
    CONFIG += console
    CONFIG -= app_bundle

    TEMPLATE = app
    INCLUDEPATH += C:\opencv\release\install\include

    LIBS += C:\opencv\release\bin\libopencv_core455.dll
    LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
    LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
    LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
    LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
    LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
    LIBS += C:\opencv\release\bin\libopencv_video455.dll
    LIBS += C:\opencv\release\bin\libopencv_videoio455.dll
    LIBS += -L"(C:\Program Files(x86)\Tesseract-OCR)" -ltesseract

    INCLUDEPATH += /usr/include/tesseract

    INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)

    LIBS += C:\Program Files(x86)\Tesseract-OCR)

    LIBS +=-LC:\Program Files(x86)\Tesseract-OCR)
    -ltesseract.dll
    -llept.dll

    LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
    -lopencv_calib3d249d
    -lopencv_contrib249d
    -lopencv_core249d
    -lopencv_features2d249d
    -lopencv_flann249d
    -lopencv_gpu249d
    -lopencv_highgui249d
    -lopencv_imgproc249d
    -lopencv_legacy249d
    -lopencv_ml249d
    -lopencv_nonfree249d
    -lopencv_objdetect249d
    -lopencv_ocl249d
    -lopencv_photo249d
    -lopencv_stitching249d
    -lopencv_superres249d
    -lopencv_ts249d
    -lopencv_video249d
    -lopencv_videostab249d

    SOURCES += main.cpp

    DEFINES += QT_DEPRECATED_WARNINGS

    1 Reply Last reply
    0
    • M Offline
      M Offline
      mchinand
      wrote on 26 May 2022, 17:39 last edited by
      #2

      What errors are you getting? The surrounding parentheses on these lines look odd, especially the ones that don't have a matching open parenthesis. Of the LIB+= lines, you only need the first LIB+= but without the parentheses.

      LIBS += -L"(C:\Program Files(x86)\Tesseract-OCR)" -ltesseract
      
      INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)
      LIBS += C:\Program Files(x86)\Tesseract-OCR)
      LIBS +=-LC:\Program Files(x86)\Tesseract-OCR)
      
      1 Reply Last reply
      0
      • O Offline
        O Offline
        OlegD
        wrote on 26 May 2022, 17:58 last edited by
        #3

        @mchinand said in Qt and Tesseract Linkage:

        INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)
        LIBS += C:\Program Files(x86)\Tesseract-OCR)
        LIBS +=-LC:\Program Files(x86)\Tesseract-OCR)

        still saying D:\PROG\May\Tesseract\main.cpp:1: error: tesseract/baseapi.h: No such file or directory
        D:\PROG\May\Tesseract\main.cpp:1:10: fatal error: tesseract/baseapi.h: No such file or directory
        1 | #include <tesseract/baseapi.h>
        | ^~~~~~~~~~~~~~~~~~~~~

        current pro file

        QT += core
        QT -= gui

        CONFIG += c++11

        TARGET = openCV
        CONFIG += console
        CONFIG -= app_bundle

        TEMPLATE = app
        INCLUDEPATH += C:\opencv\release\install\include

        LIBS += C:\opencv\release\bin\libopencv_core455.dll
        LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
        LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
        LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
        LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
        LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
        LIBS += C:\opencv\release\bin\libopencv_video455.dll
        LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

        INCLUDEPATH += C:\Program Files(x86)\Tesseract-OCR)
        LIBS += C:\Program Files(x86)\Tesseract-OCR)

        LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
        -lopencv_calib3d249d
        -lopencv_contrib249d
        -lopencv_core249d
        -lopencv_features2d249d
        -lopencv_flann249d
        -lopencv_gpu249d
        -lopencv_highgui249d
        -lopencv_imgproc249d
        -lopencv_legacy249d
        -lopencv_ml249d
        -lopencv_nonfree249d
        -lopencv_objdetect249d
        -lopencv_ocl249d
        -lopencv_photo249d
        -lopencv_stitching249d
        -lopencv_superres249d
        -lopencv_ts249d
        -lopencv_video249d
        -lopencv_videostab249d

        SOURCES += main.cpp

        DEFINES += QT_DEPRECATED_WARNINGS

        please advise!

        J 1 Reply Last reply 14 Jun 2022, 11:58
        0
        • S Offline
          S Offline
          SGaist
          Lifetime Qt Champion
          wrote on 26 May 2022, 18:15 last edited by
          #4

          Hi,

          As @mchinand already suggested, fix your paths.

          Since they have spaces in them you have to quote them properly.

          Also, having a path ending with a ) is unusual, are you sure it's written like that ?

          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
          • O Offline
            O Offline
            OlegD
            wrote on 26 May 2022, 18:29 last edited by
            #5

            Can you just give me copy paste to make it work, please!
            I've tried to put ' and "", gives error
            Thanks, mister

            J 1 Reply Last reply 26 May 2022, 18:32
            0
            • O OlegD
              26 May 2022, 18:29

              Can you just give me copy paste to make it work, please!
              I've tried to put ' and "", gives error
              Thanks, mister

              J Offline
              J Offline
              JonB
              wrote on 26 May 2022, 18:32 last edited by JonB
              #6

              @OlegD
              Assuming the correct path is C:\Program Files(x86)\Tesseract-OCR, everywhere you use it you need to copy/paste

              "C:\Program Files(x86)\Tesseract-OCR"
              

              My guess is you need

              INCLUDEPATH += "C:\Program Files(x86)\Tesseract-OCR"
              LIBS += -L"C:\Program Files(x86)\Tesseract-OCR"
              
              1 Reply Last reply
              1
              • S Offline
                S Offline
                SGaist
                Lifetime Qt Champion
                wrote on 26 May 2022, 18:38 last edited by
                #7

                Another way to avoid that: install Tesseract in a folder without spaces and special characters.

                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
                • M Offline
                  M Offline
                  mchinand
                  wrote on 26 May 2022, 18:59 last edited by
                  #8

                  @OlegD said in Qt and Tesseract Linkage:

                  tesseract/baseapi.h

                  You should find where this file is actually located. It could be that your includepath should be INCLUDEPATH += "C:\Program Files(x86)\Tesseract-OCR\include"

                  1 Reply Last reply
                  1
                  • O Offline
                    O Offline
                    OlegD
                    wrote on 26 May 2022, 19:04 last edited by
                    #9

                    edited as per all recommendations of yours..
                    still getting errors:

                    last pro.file output

                    QT += core
                    QT -= gui

                    CONFIG += c++11

                    TARGET = openCV
                    CONFIG += console
                    CONFIG -= app_bundle

                    TEMPLATE = app
                    INCLUDEPATH += C:\opencv\release\install\include

                    LIBS += C:\opencv\release\bin\libopencv_core455.dll
                    LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
                    LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
                    LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
                    LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
                    LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
                    LIBS += C:\opencv\release\bin\libopencv_video455.dll
                    LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

                    INCLUDEPATH += "C:\Tesseract-OCR"
                    LIBS += -L"C:\Tesseract-OCR"
                    INCLUDEPATH += "C:\Tesseract-OCR\include"

                    LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                    -lopencv_calib3d249d
                    -lopencv_contrib249d
                    -lopencv_core249d
                    -lopencv_features2d249d
                    -lopencv_flann249d
                    -lopencv_gpu249d
                    -lopencv_highgui249d
                    -lopencv_imgproc249d
                    -lopencv_legacy249d
                    -lopencv_ml249d
                    -lopencv_nonfree249d
                    -lopencv_objdetect249d
                    -lopencv_ocl249d
                    -lopencv_photo249d
                    -lopencv_stitching249d
                    -lopencv_superres249d
                    -lopencv_ts249d
                    -lopencv_video249d
                    -lopencv_videostab249d

                    SOURCES += main.cpp

                    DEFINES += QT_DEPRECATED_WARNINGS

                    Feel stupid :D

                    J 1 Reply Last reply 26 May 2022, 19:08
                    0
                    • M Offline
                      M Offline
                      mchinand
                      wrote on 26 May 2022, 19:07 last edited by
                      #10

                      @mchinand said in Qt and Tesseract Linkage:

                      tesseract/baseapi.h

                      Are you getting the same error? What is the full path to this header file on your system?

                      1 Reply Last reply
                      0
                      • O OlegD
                        26 May 2022, 19:04

                        edited as per all recommendations of yours..
                        still getting errors:

                        last pro.file output

                        QT += core
                        QT -= gui

                        CONFIG += c++11

                        TARGET = openCV
                        CONFIG += console
                        CONFIG -= app_bundle

                        TEMPLATE = app
                        INCLUDEPATH += C:\opencv\release\install\include

                        LIBS += C:\opencv\release\bin\libopencv_core455.dll
                        LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
                        LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
                        LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
                        LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
                        LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
                        LIBS += C:\opencv\release\bin\libopencv_video455.dll
                        LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

                        INCLUDEPATH += "C:\Tesseract-OCR"
                        LIBS += -L"C:\Tesseract-OCR"
                        INCLUDEPATH += "C:\Tesseract-OCR\include"

                        LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                        -lopencv_calib3d249d
                        -lopencv_contrib249d
                        -lopencv_core249d
                        -lopencv_features2d249d
                        -lopencv_flann249d
                        -lopencv_gpu249d
                        -lopencv_highgui249d
                        -lopencv_imgproc249d
                        -lopencv_legacy249d
                        -lopencv_ml249d
                        -lopencv_nonfree249d
                        -lopencv_objdetect249d
                        -lopencv_ocl249d
                        -lopencv_photo249d
                        -lopencv_stitching249d
                        -lopencv_superres249d
                        -lopencv_ts249d
                        -lopencv_video249d
                        -lopencv_videostab249d

                        SOURCES += main.cpp

                        DEFINES += QT_DEPRECATED_WARNINGS

                        Feel stupid :D

                        J Offline
                        J Offline
                        JonB
                        wrote on 26 May 2022, 19:08 last edited by JonB
                        #11

                        @OlegD said in Qt and Tesseract Linkage:

                        still getting errors:

                        Wouldn't you want to say/confirm what these errors are??

                        If it's failing on #include <tesseract/baseapi.h>, where exactly is that file? Is it at C:\Tesseract-OCR\include\tesseract\baseapi.h?

                        1 Reply Last reply
                        1
                        • O Offline
                          O Offline
                          OlegD
                          wrote on 27 May 2022, 08:03 last edited by
                          #12

                          tesseract_ver.png
                          Is there any chance I've installed wrong tesseract version?

                          Downloaded in installed version from the link below
                          https://tesseract-ocr.github.io/tessdoc/Home.html

                          @OlegD said in Qt and Tesseract Linkage:

                          edited as per all recommendations of yours..
                          still getting errors:

                          last pro.file output

                          QT += core
                          QT -= gui

                          CONFIG += c++11

                          TARGET = openCV
                          CONFIG += console
                          CONFIG -= app_bundle

                          TEMPLATE = app
                          INCLUDEPATH += C:\opencv\release\install\include

                          LIBS += C:\opencv\release\bin\libopencv_core455.dll
                          LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
                          LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
                          LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
                          LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
                          LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
                          LIBS += C:\opencv\release\bin\libopencv_video455.dll
                          LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

                          INCLUDEPATH += "C:\Tesseract-OCR"
                          LIBS += -L"C:\Tesseract-OCR"
                          INCLUDEPATH += "C:\Tesseract-OCR\include"

                          LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                          -lopencv_calib3d249d
                          -lopencv_contrib249d
                          -lopencv_core249d
                          -lopencv_features2d249d
                          -lopencv_flann249d
                          -lopencv_gpu249d
                          -lopencv_highgui249d
                          -lopencv_imgproc249d
                          -lopencv_legacy249d
                          -lopencv_ml249d
                          -lopencv_nonfree249d
                          -lopencv_objdetect249d
                          -lopencv_ocl249d
                          -lopencv_photo249d
                          -lopencv_stitching249d
                          -lopencv_superres249d
                          -lopencv_ts249d
                          -lopencv_video249d
                          -lopencv_videostab249d

                          SOURCES += main.cpp

                          DEFINES += QT_DEPRECATED_WARNINGS

                          Feel stupid :D

                          Is there any chance I've installed wrong tesseract version?

                          Downloaded in installed version from the link below
                          https://tesseract-ocr.github.io/tessdoc/Home.html

                          J 1 Reply Last reply 27 May 2022, 08:24
                          0
                          • O OlegD
                            27 May 2022, 08:03

                            tesseract_ver.png
                            Is there any chance I've installed wrong tesseract version?

                            Downloaded in installed version from the link below
                            https://tesseract-ocr.github.io/tessdoc/Home.html

                            @OlegD said in Qt and Tesseract Linkage:

                            edited as per all recommendations of yours..
                            still getting errors:

                            last pro.file output

                            QT += core
                            QT -= gui

                            CONFIG += c++11

                            TARGET = openCV
                            CONFIG += console
                            CONFIG -= app_bundle

                            TEMPLATE = app
                            INCLUDEPATH += C:\opencv\release\install\include

                            LIBS += C:\opencv\release\bin\libopencv_core455.dll
                            LIBS += C:\opencv\release\bin\libopencv_highgui455.dll
                            LIBS += C:\opencv\release\bin\libopencv_imgcodecs455.dll
                            LIBS += C:\opencv\release\bin\libopencv_imgproc455.dll
                            LIBS += C:\opencv\release\bin\libopencv_calib3d455.dll
                            LIBS += C:\opencv\release\bin\libopencv_features2d455.dll
                            LIBS += C:\opencv\release\bin\libopencv_video455.dll
                            LIBS += C:\opencv\release\bin\libopencv_videoio455.dll

                            INCLUDEPATH += "C:\Tesseract-OCR"
                            LIBS += -L"C:\Tesseract-OCR"
                            INCLUDEPATH += "C:\Tesseract-OCR\include"

                            LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                            -lopencv_calib3d249d
                            -lopencv_contrib249d
                            -lopencv_core249d
                            -lopencv_features2d249d
                            -lopencv_flann249d
                            -lopencv_gpu249d
                            -lopencv_highgui249d
                            -lopencv_imgproc249d
                            -lopencv_legacy249d
                            -lopencv_ml249d
                            -lopencv_nonfree249d
                            -lopencv_objdetect249d
                            -lopencv_ocl249d
                            -lopencv_photo249d
                            -lopencv_stitching249d
                            -lopencv_superres249d
                            -lopencv_ts249d
                            -lopencv_video249d
                            -lopencv_videostab249d

                            SOURCES += main.cpp

                            DEFINES += QT_DEPRECATED_WARNINGS

                            Feel stupid :D

                            Is there any chance I've installed wrong tesseract version?

                            Downloaded in installed version from the link below
                            https://tesseract-ocr.github.io/tessdoc/Home.html

                            J Offline
                            J Offline
                            JonB
                            wrote on 27 May 2022, 08:24 last edited by
                            #13

                            @OlegD said in Qt and Tesseract Linkage:

                            Is there any chance I've installed wrong tesseract version?

                            That's for you to sort out. But there are no .h files, and no include sub-directory.

                            1 Reply Last reply
                            0
                            • O Offline
                              O Offline
                              OlegD
                              wrote on 27 May 2022, 08:31 last edited by
                              #14

                              so what should i actually do ?
                              I'm totally lost now :D

                              J 1 Reply Last reply 27 May 2022, 08:32
                              0
                              • J.HilkJ Offline
                                J.HilkJ Offline
                                J.Hilk
                                Moderators
                                wrote on 27 May 2022, 08:31 last edited by
                                #15

                                @OlegD said in Qt and Tesseract Linkage:

                                LIBS += -LC:\Qt\opencv_cv2\OPENCV1\build-qt\lib
                                -lopencv_calib3d249d
                                -lopencv_contrib249d
                                -lopencv_core249d
                                -lopencv_features2d249d
                                -lopencv_flann249d
                                -lopencv_gpu249d
                                -lopencv_highgui249d
                                -lopencv_imgproc249d
                                -lopencv_legacy249d
                                -lopencv_ml249d
                                -lopencv_nonfree249d
                                -lopencv_objdetect249d
                                -lopencv_ocl249d
                                -lopencv_photo249d
                                -lopencv_stitching249d
                                -lopencv_superres249d
                                -lopencv_ts249d
                                -lopencv_video249d
                                -lopencv_videostab249d

                                this is incorrect

                                those need to be inline or concatenated via \ to escape the (invisible) newline character


                                Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


                                Q: What's that?
                                A: It's blue light.
                                Q: What does it do?
                                A: It turns blue.

                                1 Reply Last reply
                                0
                                • O OlegD
                                  27 May 2022, 08:31

                                  so what should i actually do ?
                                  I'm totally lost now :D

                                  J Offline
                                  J Offline
                                  JonB
                                  wrote on 27 May 2022, 08:32 last edited by
                                  #16

                                  @OlegD said in Qt and Tesseract Linkage:

                                  so what should i actually do ?
                                  I'm totally lost now :D

                                  Did you read & follow the instructions (for Windows) from the link?

                                  1 Reply Last reply
                                  0
                                  • O Offline
                                    O Offline
                                    OlegD
                                    wrote on 27 May 2022, 09:20 last edited by
                                    #17

                                    Well, I dont know how to make it work with QT.
                                    I've just installed package, realized that there is no instruction for QT and posted to QT forum.
                                    Please advise how can I install it properly for QT environment

                                    Windows
                                    main branch, 3.05 and later
                                    Using Tesseract

                                    !!! IMPORTANT !!! To use Tesseract in your application (to include tess or to link it into your app) see this very simple example.
                                    Build the latest library (using Software Network client)

                                    Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
                                    Run sw setup (may require administrator access)
                                    Run sw build org.sw.demo.google.tesseract.tesseract-master.
                                    

                                    For visual studio project using tesseract

                                    Setup Vcpkg the Visual C++ Package Manager.
                                    Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
                                    

                                    Static linking

                                    To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

                                    vcpkg install tesseract:x64-windows-static for 64-bit
                                    vcpkg install tesseract:x86-windows-static for 32-bit
                                    

                                    Use –head for the main branch. It may still require one DLL for the OpenMP runtime, vcomp140.dll (which you can find in the Visual C++ Redistributable 2015).
                                    Build training tools

                                    Today it is possible to build a full set of tess training tools on Windows with Visual Studio. You need to have the latest VS compiler (VS2019/2022 or light VS 2019/2022 build tools distro installed.

                                    To do this:

                                    Download the latest SW (Software Network https://software-network.org/client/) client from https://software-network.org/client/.
                                    Checkout tesseract sources git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.
                                    Run sw build.
                                    Binaries will be available under .sw\out\some hash dir...
                                    

                                    Develop Tesseract

                                    For development purposes of Tesseract itself do the next steps:

                                    Download and install Git, CMake and put them in PATH.
                                    Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/. SW is a source package distribution system.
                                    Add SW client to PATH.
                                    Run sw setup (may require administrator access)
                                    If you have a release archive, unpack it to tesseract dir.
                                    

                                    If you’re using main branch run

                                    git clone https://github.com/tesseract-ocr/tesseract tesseract

                                    Run
                                    
                                     cd tesseract
                                     mkdir build && cd build
                                     cmake ..
                                    
                                    Build a solution (tesseract.sln) in your Visual Studio version. If you want to build and install from command line (e.g. Release build) you can use this command:
                                    
                                    cmake --build . --config Release --target install
                                    
                                    If you want to install to other directory that C:\Program Files (you will need admin right for this), you need to specify install path during configuration:
                                    
                                    cmake .. -G "Visual Studio 15 2017 Win64" -DCMAKE_INSTALL_PREFIX=inst
                                    

                                    For development purposes of training tools after cloning a repo from previous paragraph, run

                                    sw build

                                    You’ll see a solution link appeared in the root directory of Tesseract.
                                    Building for x64 platform
                                    sw

                                    If you’re building with sw+cmake, run cmake as follows:

                                    mkdir win64 && cd win64
                                    cmake .. -G "Visual Studio 14 2015 Win64"

                                    If you’re building with sw run sw generate, it will create a solution link for you (not yet implemented!).

                                    J 1 Reply Last reply 27 May 2022, 10:14
                                    0
                                    • O OlegD
                                      27 May 2022, 09:20

                                      Well, I dont know how to make it work with QT.
                                      I've just installed package, realized that there is no instruction for QT and posted to QT forum.
                                      Please advise how can I install it properly for QT environment

                                      Windows
                                      main branch, 3.05 and later
                                      Using Tesseract

                                      !!! IMPORTANT !!! To use Tesseract in your application (to include tess or to link it into your app) see this very simple example.
                                      Build the latest library (using Software Network client)

                                      Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/.
                                      Run sw setup (may require administrator access)
                                      Run sw build org.sw.demo.google.tesseract.tesseract-master.
                                      

                                      For visual studio project using tesseract

                                      Setup Vcpkg the Visual C++ Package Manager.
                                      Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
                                      

                                      Static linking

                                      To build a self-contained tesseract.exe executable (without any DLLs or runtime dependencies), use Vcpkg as above with the following command:

                                      vcpkg install tesseract:x64-windows-static for 64-bit
                                      vcpkg install tesseract:x86-windows-static for 32-bit
                                      

                                      Use –head for the main branch. It may still require one DLL for the OpenMP runtime, vcomp140.dll (which you can find in the Visual C++ Redistributable 2015).
                                      Build training tools

                                      Today it is possible to build a full set of tess training tools on Windows with Visual Studio. You need to have the latest VS compiler (VS2019/2022 or light VS 2019/2022 build tools distro installed.

                                      To do this:

                                      Download the latest SW (Software Network https://software-network.org/client/) client from https://software-network.org/client/.
                                      Checkout tesseract sources git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.
                                      Run sw build.
                                      Binaries will be available under .sw\out\some hash dir...
                                      

                                      Develop Tesseract

                                      For development purposes of Tesseract itself do the next steps:

                                      Download and install Git, CMake and put them in PATH.
                                      Download the latest SW (Software Network https://software-network.org/) client from https://software-network.org/client/. SW is a source package distribution system.
                                      Add SW client to PATH.
                                      Run sw setup (may require administrator access)
                                      If you have a release archive, unpack it to tesseract dir.
                                      

                                      If you’re using main branch run

                                      git clone https://github.com/tesseract-ocr/tesseract tesseract

                                      Run
                                      
                                       cd tesseract
                                       mkdir build && cd build
                                       cmake ..
                                      
                                      Build a solution (tesseract.sln) in your Visual Studio version. If you want to build and install from command line (e.g. Release build) you can use this command:
                                      
                                      cmake --build . --config Release --target install
                                      
                                      If you want to install to other directory that C:\Program Files (you will need admin right for this), you need to specify install path during configuration:
                                      
                                      cmake .. -G "Visual Studio 15 2017 Win64" -DCMAKE_INSTALL_PREFIX=inst
                                      

                                      For development purposes of training tools after cloning a repo from previous paragraph, run

                                      sw build

                                      You’ll see a solution link appeared in the root directory of Tesseract.
                                      Building for x64 platform
                                      sw

                                      If you’re building with sw+cmake, run cmake as follows:

                                      mkdir win64 && cd win64
                                      cmake .. -G "Visual Studio 14 2015 Win64"

                                      If you’re building with sw run sw generate, it will create a solution link for you (not yet implemented!).

                                      J Offline
                                      J Offline
                                      JonB
                                      wrote on 27 May 2022, 10:14 last edited by JonB
                                      #18

                                      @OlegD
                                      All you have done is pasted the whole of the instructions. They are for you to read and act on. Only you know what you did/did not do.

                                      Well, I dont know how to make it work with QT.
                                      I've just installed package, realized that there is no instruction for QT and posted to QT forum.
                                      Please advise how can I install it properly for QT environment

                                      I do not see anything related to Qt, or for Qt instructions.
                                      Your code has #include <tesseract/baseapi.h>.
                                      I pointed out that from what you show there are no .h files anywhere (that I can see).
                                      I suggested you need to see if that file is anywhere, or sort out whatever you need to do to get it available. Assuming you need that line.
                                      I don't use "tesseract", and I don't suppose anybody else here does either.

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                                      • M Offline
                                        M Offline
                                        mchinand
                                        wrote on 27 May 2022, 12:43 last edited by
                                        #19

                                        It looks like what you downloaded was just the pre-built binary and associated files to use the tesseract application and not to develop your own. You will have to build the library yourself; just follow the directions that you posted above closely step by step.

                                        J 1 Reply Last reply 27 May 2022, 12:55
                                        0
                                        • M mchinand
                                          27 May 2022, 12:43

                                          It looks like what you downloaded was just the pre-built binary and associated files to use the tesseract application and not to develop your own. You will have to build the library yourself; just follow the directions that you posted above closely step by step.

                                          J Offline
                                          J Offline
                                          JonB
                                          wrote on 27 May 2022, 12:55 last edited by
                                          #20

                                          @mchinand
                                          So it was just a sample application? And they do not provide the .h files with it?

                                          Does he really need to build it? IF it comes with pre-compiled external DLLs of whatever to make the (sample?) app work, can't he use those plus .libs & .hs for his own code without having to build the .dlls?

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                                          26 May 2022, 18:15

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