Is Apache Ant a required or optional tool?
Apache Ant is a required tool for the GT3 source distribution. It is used to compile and assemble all the GT3 code. With the binary installations, Ant is needed to generate platform-specific command-line scripts for executing GT3 clients. It is also needed to deploy and undeploy new services to and from the GT3 container. If you don’t need this functionality Ant is not required for binary installations. For developing new services we recommend using Ant as GT3 already provides lots of common operations as callable Ant tasks.