make/depends.xml

<?xml version="1.0" encoding="UTF-8" ?>
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<project name="drlvm-depends" default="check">

    <dirname property="dd.basedir" file="${ant.file.drlvm-depends}"/>
    <import file="${dd.basedir}/properties.xml"/>
    
    <target name="check">
        <check-one-file dest="${cpptasks.jar}" src="${cpptasks.url}"/>
        <poll-modules target="check-depends" dir="${dd.basedir}" includes="**/*.xml"/>
        <fail>
            <condition>
                <not>
                    <and>
                    <available file="${hy.hdk}/include"/>
                    <available file="${hy.hdk}/lib"/>
                    </and>
                </not>
            </condition>
...

Missing dependency: pre-built class library (or HDK)
at ${hy.hdk}. 
You may point to the correct location via "hy.hdk" property:
"ant -Dhy.hdk=a-hdk-root"
        </fail>
    </target>
        
    <target name="fetch">
        <fetch dep="cpptasks"/>
        <poll-modules target="fetch-depends" dir="${dd.basedir}" includes="**/*.xml"/>
    </target>
    
</project>