ANT : build.xml, build.properties and antlib.cml

antlib.xml

<antlib>
    <taskdef name="mxmlc" classname="flex.ant.MxmlcTask" classpath="${FLEX_HOME}/ant/lib/flexTasks.jar" />
    <taskdef name="flexunit" classname="org.flexunit.ant.tasks.FlexUnitTask" classpath="${FLEXUNIT_HOME}/FlexUnit4AntTasks/target/flexUnitTasks-4.1.0-1.jar"/>
</antlib>

build.properties

FLEX_HOME = /Users/ymichel/Packages/flex-sdk
FLEXUNIT_HOME = /Users/ymichel/Packages/flexunit

build.xml

<?xml version="1.0" encoding="UTF-8" ?>
<project name="player" default="all" basedir=".">

    <!-- path mapping -->
    <property name="ant.dir" location="${basedir}/ant" />
    <property name="build.dir" location="${basedir}/build" />
    <property name="src.dir" location="${basedir}/src" />
    <property name="test.dir" location="${basedir}/test" />

    <!-- properties -->
    <property file="${ant.dir}/build.properties" />
    <typedef file="${ant.dir}/antlib.xml"/>

    <!-- default targets -->
    <target name="all">
        <antcall target="compile"/>
    </target>

    <!-- compiles the app -->
    <target name="compile">
        <mkdir dir="${build.dir}"/>
        <mxmlc file="${src.dir}/Player.as" output="${build.dir}/player.swf" debug="true" strict="true" optimize="true" advanced-telemetry="true">
            <source-path path-element="${src.dir}"/>
        </mxmlc>
    </target>

    <!-- tests the app -->
    <target name="test">
        <mxmlc file="${test.dir}/TestRunner.as" output="${build.dir}/player-test.swf">
            <source-path path-element="${src.dir}"/>
            <library-path dir="${FLEXUNIT_HOME}/FlexUnit4/target/" append="true">
                <include name="*.swc"/>
            </library-path>
        </mxmlc>
        <flexunit swf="${build.dir}/player-test.swf" haltonFailure="false" verbose="false" toDir="${build.dir}"></flexunit>
    </target>

    <!-- cleans compiled files -->
    <target name="clean">
        <delete dir="${build.dir}"/>
    </target>

</project>