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    copied!<p>A multi-module project is described in the documentation:</p> <p><a href="http://ant.apache.org/ivy/history/latest-milestone/tutorial/multiproject.html" rel="nofollow">http://ant.apache.org/ivy/history/latest-milestone/tutorial/multiproject.html</a> </p> <p>and the source code is available in subversion:</p> <p><a href="http://svn.apache.org/viewvc/ant/ivy/core/trunk/src/example/multi-project/" rel="nofollow">http://svn.apache.org/viewvc/ant/ivy/core/trunk/src/example/multi-project/</a> </p> <p>The simplified summary of how it works:</p> <h2>Wrapper build</h2> <p>Invokes each individual module build in the correct order. If Module A depends on module B, then B will be built first:</p> <pre><code>&lt;project xmlns:ivy="antlib:org.apache.ivy.ant" name="build-all" default="build"&gt; &lt;!-- ========================================================================== Use the ivy buildlist task to create an ordered list of sub-project builds ========================================================================== --&gt; &lt;target name="build-list"&gt; &lt;ivy:buildlist reference="build-path"&gt; &lt;fileset dir="." includes="modules/**/build.xml"/&gt; &lt;/ivy:buildlist&gt; &lt;/target&gt; &lt;!-- ============================== Invoke targets in sub-projects ============================== --&gt; &lt;target name="build" depends="build-list" description="Invoke build target on sub-projects"&gt; &lt;subant target="build" buildpathref="build-path" /&gt; &lt;/target&gt; &lt;/project&gt; </code></pre> <p>For more information see the <a href="http://ant.apache.org/ivy/history/latest-milestone/use/buildlist.html" rel="nofollow">buildlist</a> documentation.</p> <h2>Module build</h2> <p>Each module will download it's dependencies at the beginning of it's build</p> <pre><code>&lt;target name="init"&gt; &lt;ivy:settings file="../../ivysettings.xml"/&gt; &lt;ivy:resolve/&gt; &lt;/target&gt; </code></pre> <p>At at the end, will publish it's built artifacts:</p> <pre><code>&lt;target name="publish" depends="build" description="Publish module artifacts to the respository"&gt; &lt;ivy:publish resolver="${publish.resolver}" pubrevision="${publish.revision}" overwrite="true"&gt; &lt;artifacts pattern="${build.dir}/[artifact].[ext]"/&gt; &lt;/ivy:publish&gt; &lt;/target&gt; </code></pre> <p>Don't forget that for all this to work each module must declare what it depends on and what it publishes</p> <pre><code>&lt;ivy-module version='2.0'&gt; &lt;info organisation='com.myorg' module='mymod'/&gt; &lt;publications&gt; &lt;artifact name="mymod" type="jar"/&gt; &lt;/publications&gt; &lt;dependencies&gt; .. &lt;/dependencies&gt; &lt;/ivy-module&gt; </code></pre>
 

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