tesseract/INSTALL.GIT.md
Stefan Weil add00edfba Update documentation for installation
Add two build dependencies which were missing and update the hints for
building ScrollView.jar.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
2017-05-25 20:57:02 +02:00

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# autotools (LINUX/UNIX , msys...)
If you have cloned Tesseract from GitHub, you must generate
the configure script.
If you have tesseract 4.0x installation in your system, please remove it
before new build.
Known dependencies for training tools (excluding leptonica):
* compiler with c++11 support
* autoconf-archive
* automake
* pkg-config
* pango-devel
* cairo-devel
* icu-devel
So, the steps for making Tesseract are:
$ ./autogen.sh
$ ./configure
$ make
$ sudo make install
$ make training
$ sudo make training-install
You need to install at least English language and OSD data files to TESSDATA_PREFIX
directory. You can retrieve single file with tools like [wget](https://www.gnu.org/software/wget/), [curl](https://curl.haxx.se/), [GithubDownloader](https://github.com/intezer/GithubDownloader) or browser.
All language data files can be retrieved from git repository (useful only for packagers!):
$ git clone https://github.com/tesseract-ocr/tessdata.git tesseract-ocr.tessdata
(Repository is huge - more that 1.2 GB. You do not need to download
all languages).
You need an Internet connection to compile ScrollView.jar because the build will automatically download piccolo2d-core-3.0.jar
and [piccolo2d-extras-3.0.jar](http://search.maven.org/#search|ga|1|g%3A%22org.piccolo2d%22) and place them to tesseract/java.
Just run:
$ make ScrollView.jar
and follow the instruction on [Viewer Debugging wiki](https://github.com/tesseract-ocr/tesseract/wiki/ViewerDebugging).
# CMAKE
There is alternative build system based on multiplatform [cmake](https://cmake.org/)
## LINUX
$ mkdir build
$ cd build && cmake .. && make
$ sudo make install
## WINDOWS
You need to use leptonica with cmake patch:
git clone https://github.com/DanBloomberg/leptonica.git
cd leptonica
mkdir build
cd build
cmake ..
cmake --build .
cd ..\..
git clone https://github.com/tesseract-ocr/tesseract.git
cd tesseract
mkdir build
cd build
cmake .. -DLeptonica_BUILD_DIR=\abs\path\to\leptonica\build
cmake --build .
# WINDOWS Visual Studio
Please read http://vorba.ch/2014/tesseract-3.03-vs2013.html