| 1 | -------------------------------------------------
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| 2 | COMPILING TESSERACT GS2-EXTENSION
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| 3 | & CREATING THE CUT-DOWN BINARY-ONLY TARBALL
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| 4 | -------------------------------------------------
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| 5 |
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| 6 | To compile the Tesseract gs2-extension and then create the "binary" tarball needed to run
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| 7 | Tesseract, we follow an equivalent version of the instructions for the imagemagick gs2-extension
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| 8 | at http://trac.greenstone.org/browser/gs2-extensions/imagemagick/trunk/README
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| 9 |
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| 10 | 1. Find a location on your machine
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| 11 |
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| 12 | 2. Check out the tesseract extension from gs2-extensions
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| 13 | svn co http://trac.greenstone.org/browser/gs2-extensions/tesseract/trunk tesseract
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| 14 |
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| 15 | 3. Compile it all up (tesseract and dependencies):
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| 16 | cd tesseract
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| 17 | ./CASCADE-MAKE.sh
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| 18 |
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| 19 | 4. Open a fresh terminal and check that the tesseract now installed in src/linux/bin works:
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| 20 |
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| 21 | cd src
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| 22 | source ./setup.bash
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| 23 |
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| 24 | This should have set up env vars like GEXTTESS, GEXTTESS_INSTALLED, and TESSDATA_PREFIX
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| 25 | which Tesseract needs to have set
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| 26 |
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| 27 | tesseract --list-langs
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| 28 | tesseract sample.tif out
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| 29 |
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| 30 | OCRs sample.tif and generates out.txt from it.
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| 31 |
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| 32 | cat out.txt
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| 33 |
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| 34 | 5. If successful, create a folder at the same level as src alled tesseract
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| 35 | cd src
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| 36 | cd ..
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| 37 | mkdir tesseract
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| 38 |
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| 39 | COPY the setup files and MOVE the installed folder (src/linux) into there:
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| 40 | cp src/setup.ba* tesseract/.
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| 41 | mv src/linux tesseract/.
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| 42 |
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| 43 | 6. Create a tarball of the cut down tesseract folder named tesseract-<os>-<arch>.tar.gz:
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| 44 | tar -cvzf tesseract-linux-x64.tar.gz tesseract
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| 45 |
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| 46 | 7. (Add/SVN up and) commit that to svn:
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| 47 | svn up
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| 48 | svn add tesseract-linux-x64.tar.gz
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| 49 | (or svn diff tesseract-linux-x64.tar.gz if there was an earlier version to confirm modified)
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| 50 | svn commit -m "MESSAGE" tesseract-linux-x64.tar.gz
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| 51 |
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| 52 |
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| 53 | -------------------------------------------------
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