documentation git-bash script for installing tesseract and leptonica has hard coded leptonica lib name and fails

[estekitaly]

this is my first report here, so I'm not sure if it is the right place.

System information (version)

• OpenCV => 3.4.0
• Operating System / Platform => Windows 64 Bit
• Compiler => Visual Studio 2015

Detailed description

the suggested script will not work as of now because the current leptonica version is 1.75.3 and not 1.74.4

thus when including it as a library it will fail to be found and the openCV compilation will fail after a long time.

another error can be found at the line that reads:
cmake --build $RepoSource --target install --config release

we should replace the "$RepoSource" with "." so it should be, otherwise it will look for Build/leptonica/leptonica instead of just Build/leptonica:
cmake --build . --target install --config release

Steps to reproduce

go to https://docs.opencv.org/3.4.0/db/d4c/tutorial_install_tesseract.html and follow the instructions

you will see: -DLept_LIBRARY="${myRepo}"/Install/leptonica/lib/leptonica-1.74.4.lib
as a side note there is also: -DTesseract_LIBRARY="${myRepo}"/Install/tesseract/lib/tesseract400.lib

so what happens is that currently when you pull the latest leptonica git repository it will create leptonica-1.75.3.lib in the install folder and not leptonica-1.74.4.lib

[LaurentBerger]

May be you are first one to test this tutorials
About version I will change
This tutorials is for leptonica 1.74.4. If you use a newer version don't forget to change version numbre in source code!

I will change typo error

cmake --build .  --config release
cmake --build $RepoSource  --target install --config release

in

cmake --build . --config release
cmake --build .  --target install --config release

[estekitaly]

another issue on this would be that the generated opencv installation doesn't actually contain the text module libraries, it does contain the cv::text headers but not the libraries.

[LaurentBerger]

"it does contain the cv::text headers but not the libraries" this issue is not the same. I understand that there is problem in cmake process when you build opencv with opencv_contrib