Qt and Tesseract Linkage
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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.
wrote on 27 May 2022, 12:55 last edited by@mchinand
So it was just a sample application? And they do not provide the.hfiles 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? -
wrote on 27 May 2022, 13:06 last edited by
It might be possible but probably easier to just build it. I'm not seeing a .lib only a 'tesseract-5.dll'. I would characterize it as an application that non-developers use and not just a sample application (like you though, I've never used it).
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wrote on 27 May 2022, 15:06 last edited by
Guys, so if I do want to install close to instruction, how can I proceed with this lines?
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 linkingTo 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 -
wrote on 29 May 2022, 08:39 last edited by
Still looking for any advise
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Guys, so if I do want to install close to instruction, how can I proceed with this lines?
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 linkingTo 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-bitwrote on 29 May 2022, 08:50 last edited by@OlegD said in Qt and Tesseract Linkage:
Run vcpkg install tesseract:x64-windows for 64-bit. Use –head for the master branch.
Did you do that?
Otherwise go ask the tesseract people. Qt people do not know anything about this package, we do not know whether it downloads e.g.
.hfiles, only you/tesseract people do. -
wrote on 29 May 2022, 11:09 last edited by
few bullets of instructions do not work..:K
I've posted to Teseract forum, still no respond...
Maybe you can share e-mail or phone from anyone related to Teseract?
Big Thanks in advance -
wrote on 13 Jun 2022, 17:24 last edited by
Still looking for help to install Tesseract with QT
Can pay for help -
Did you manage to install tesseract at all ?
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wrote on 14 Jun 2022, 10:17 last edited by
Yes, but it does not work, so I'm asking for help
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What exactly did you do ?
What was the outcome ?Did you follow the documentation provided by the project itself ?
You seem to have already checked it based on one of your previous answer. However you did not explain what your issue was with them.
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wrote on 14 Jun 2022, 11:53 last edited by
If I execute files below thay just do nothing
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. -
@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 -= guiCONFIG += c++11
TARGET = openCV
CONFIG += console
CONFIG -= app_bundleTEMPLATE = app
INCLUDEPATH += C:\opencv\release\install\includeLIBS += 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.dllINCLUDEPATH += 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_videostab249dSOURCES += main.cpp
DEFINES += QT_DEPRECATED_WARNINGS
please advise!
wrote on 14 Jun 2022, 11:58 last edited by@OlegD said in Qt and Tesseract Linkage:
still saying
D:\PROG\May\Tesseract\main.cpp:1: error: tesseract/baseapi.h: No such file or directoryAs I said earlier, you show no signs of having any tesseract
.hfiles at all?I don't think you are reading and following all the instructions. Please do so. For example, in https://tesseract-ocr.github.io/tessdoc/Compiling.html#windows
Checkout tesseract sources
git clone https://github.com/tesseract-ocr/tesseract tesseract && cd tesseract.I can see that would at least give you
tesseract/include/tesseract/*.h, which is what you need..... -
wrote on 14 Jun 2022, 12:04 last edited by
@JonB said in Qt and Tesseract Linkage:
tesseract/include/tesseract/*.h
I can not run these files
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 -
@JonB said in Qt and Tesseract Linkage:
tesseract/include/tesseract/*.h
I can not run these files
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 -
wrote on 14 Jun 2022, 12:31 last edited by
oh! I found a clue and probably goind to install it soon...
Thank you so much, JonB! -
wrote on 14 Jun 2022, 13:05 last edited by OlegD
Now I need to build it according to my librariries...
How can i check what do I actually have?Msys2
Mingw+Msys
Mingw-w64Looking for command as below, to find what do I actually have
C:\Qt\Tools\mingw900_64>gcc -dumpversion
11.2.0 -
The Qt installer provides MinGW directly. It has nothing to do with MSys.
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wrote on 14 Jun 2022, 19:14 last edited by
So my next step must be here
Mingw-w64Mingw-w64 allows building 32- or 64-bit executables for Windows. It can be used for native compilations on Windows, but also for cross compilations on Linux (which are easier and faster than native compilations). Most large Linux distributions already contain packages with the tools need for a cross build. Before building Tesseract, it is necessary to build some prerequisites.
For Debian and similar distributions (e. g. Ubuntu), the cross tools can be installed like that:
Development environment targeting 32- and 64-bit Windows (required)
apt-get install mingw-w64
Development tools for 32- and 64-bit Windows (optional)
apt-get install mingw-w64-tools
These prerequisites will be needed:
libpng, libtiff, zlib (binaries for Mingw-w64 available as part of the GTK+ bundles) libicu liblcms2 openjpeg leptonicawhat should i exactly do?
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Why are you following the cross-compilation instructions from Linux to Windows ?