1. Get the source Tesseract OCR's source : http://code.google.com/p/tesseract-ocr/ libtiff's source : http://www.libtiff.org/index.html For jpeg library, check my other page "ZBar code reader cross-compilation guide" 2. Extract the files Extract all sources in the directory of your choice. 3. Build jpeg library Check my other page "ZBar code reader cross-compilation guide" 4. Build libz Environeme