Since it has a *.pro (Capture2Text.pro) file, it needs QT (qmake) to build the file.
You can download an open source version of QT via the following link: https://www.qt.io/download-open-source

I believe you can use the build instructions in the following link:
https://github.com/GSam/Capture2Text

The following fork has a README.md file with build instructions.
https://github.com/EnderQIU/c2t-source-code

 

Last edit: David Maisonave (Axter) 2022-09-29