I've made a short investigation on FLOSS OCR systems and decided to give OCRE a chance. So, I've just packaged OCRE for my Fedora Core 4 installation. I've reused a previous spec file but the new one seems to be more complete. The author provides some RPM binary files which seems to be created with the sadly well know alien converter. Without src.rpm we can't rebuild to attend the binary dependencies.
Maybe you'll discover this are not the last versions of the application but 0.026 and 0.025 doens't compile wondering about an opcionesp.h header.
Maybe in next days I could publish a working version with the help of the author.