You need the following library (Ubuntu):
# apt-get install libpng12-dev
# apt-get install libjpeg62-dev
# apt-get install libtiff4-dev
# apt-get install zlib1g-dev
Set up leptonica:
# wget http://www.leptonica.com/source/leptonlib-1.67.tar.gz
# tar xfz leptonlib-1.67.tar.gz
# cd leptonlib-1.67
# ./configure
# make
# make install
Setup tesseract-ocr (version 3.0):
# svn checkout http://tesseract-ocr.googlecode.com/svn/trunk/ tesseract
# cd tesseract
# ./configure
# make
# make install
# ldconfig -v
Testing tesseract-ocr:
# tesseract eurotext.tiff result
Check result:
# cat result.txt
Done.
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