build-ivy.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="ivy" basedir="." xmlns:ivy="antlib:org.apache.ivy.ant">
    <description>Ivy utilities</description>

    <property name="ivy.cache.ttl.default" value="7d"/>

    <target name="-init-ivy" depends="-init-lib-directory">
        <path id="ivy.classpath">
           <fileset dir="etc/ivy" includes="ivy*.jar"/>
        </path>

        <available classname="org.apache.ivy.ant.IvyConfigure"
              property="ivy.available" classpathref="ivy.classpath" />

        <taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant" classpathref="ivy.classpath"/>
        <ivy:settings file="etc/ivy/ivysettings.xml"/>
    </target>

    <target name="-init-dependencies" depends="-init-ivy" unless="ivy.done">
        <ivy:retrieve symlink="true" pattern="lib/[artifact].[ext]" sync="true" />
        <property name="ivy.done" value="true"/>
    </target>
</project>