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Java Developer Kit (JDK)

You will need a JDK 1.4.2+ (J2SE 1.4.2+) or compatible JDK to build Groovy.

Apache Ant

To execute the build process you need to have Apache Ant version 1.7.0 (or newer) installed.


The optional TraX taskdefs are required, and some linux distributions, such as openSUSE, may require you to install them separately from the ant packages.

Git Client

To fetch the source code for the server, you will need to have a Git client version 1.2 (or newer, 1.4 is recommended) installed.


If you are using a source archive from the distribution site site, then you do not need to have a Git client installed.

Fetch the Groovy Source Code

From Git

Have a look at our Git page for further details on how to get the sources, either from the Codehaus Git repository, or the GitHub mirror.

From a Source Archive

Select one of the *-src.* archives from the distribution site site and unzip it.

For example, to use the source from the Groovy 1.1-beta-2 release:

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Preparing to Build for the First Time

If you are behind a proxy firewall, you may need to set up proxy information in a ~/.ant/settings.xml or ~/.m2/settings.xml file:

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<?xml version="1.0"?>

If you will need to publish artifacts then you will need to have appropriate permissions with codehaus and ensure that you have stored your credentials in a ~/.ant/settings.xml or ~/.m2/settings.xml file of the form:

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<?xml version="1.0"?>


To build everything, run tests and create a complete installation in target/install, run:

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ant install
titleUseful Information

In case of java.lang.OutOfMemoryError try increasing the size of the heap space by setting the ANT_OPTS variable as follows:


Increase the size of the heap size if required.


If the unit tests hang indefinitely while building, try adding the following to your ant command:

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After this finished successfully, then you can try out the distribution that was just built. For example to play with groovysh you can run:

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Sometimes its desirable to skip the test execution for faster turn around. To turn off tests set the skipTests property, as in:

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ant install -DskipTests=true

Distribution Archives

To build a Groovy distribution archive:

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ant dist

This will build everything, generate documentation and create distribution archives under target/dist:


As you might have guessed VERSION will be the version of the project you are building, like 1.1-beta-2-SNAPSHOT for pre-releases or 1.1-beta-2 for a released version.

Publishing Artifacts

To publish artifacts to the Maven 2 repository, run:

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ant deploy

This will either publish to the release repository or the snapshot repository based on whether the POM version contains SNAPSHOT or not.

If deploy is failing, then check Installing the UserTrust CA into the Java JDK.

Building from IntelliJ IDEA

Please follow the instructions found here.