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BUILDING.md

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Building

This project may be built manually as an alternative to including the pre-built AAR as an external dependency in your app project. To start the build, import the root directory of this project into Android Studio as an existing Android Studio project, or follow the instructions below to build on the command line.

##Android Studio and Gradle

The Gradle build uses the gradle-stable plugin and the "bundled" Android NDK to build the Tesseract and Leptonica native C/C++ code through a call to ndk-build in build.gradle. After building, the AAR file that is generated may be imported into your app project as a dependency on a local binary package.

Type the following commands in a terminal window to build the project from the command line:

On Mac/Linux:

export ANDROID_HOME=/path/to/your/android-sdk
git clone git://github.com/rmtheis/tess-two tess
cd tess
android update project --path tess-two
cp tess-two/local.properties .
./gradlew assemble

On Windows:

set ANDROID_HOME=C:\\path\\to\\your\\android-sdk
git clone git://github.com/rmtheis/tess-two tess
cd tess
android update project --path tess-two
copy tess-two\local.properties .
gradlew assemble

Testing

On Mac/Linux:

./preparetests.sh
./gradlew connectedAndroidTest

On Windows:

preparetests.cmd
gradlew connectedAndroidTest

Some tests will fail due to existing issues.

Eclipse and Ant

Versions up to 5.4.0 may be built as a library project using the standalone Android NDK and imported into Eclipse using File->Import->Existing Projects into Workspace.

On 64-bit Ubuntu, you may need to install the ia32-libs 32-bit compatibility library.

To build tess-two, run the following commands in the terminal:

git clone git://github.com/rmtheis/tess-two tess
cd tess
git checkout tags/5.4.0
cd tess-two
ndk-build
android update project --path .
ant release

To build eyes-two, additionally run the following:

cd ..
cd eyes-two
ndk-build
android update project --path .
ant release

If you're using ProGuard for code shrinking and obfuscation, manually add the ProGuard keep options from the proguard-rules.pro file to your app's ProGuard config in order to retain fields and methods used by native code.