build.xml

<project default="build" basedir=".">
    <description>Build file for flashblocks library.</description>

    <!-- build properties -->
    <property name="src.dir" value="${basedir}/src"/>
    <property name="bin.dir" value="${basedir}/bin"/>
    <property name="build.dir" value="${basedir}/build"/>

    <!-- env properties -->
    <property environment="env"/>
    <property name="FLEX_HOME" value="${env.FLEX_HOME}"/>

    <macrodef name="build-swc-macro">
        <attribute name="app" />
        <attribute name="swc"       default="@{app}" />
        <attribute name="swcFile"   default="${bin.dir}/@{swc}.swc" />
        <sequential>
            <!-- java task method of calling compc.jar -->
            <java jar="${FLEX_HOME}/lib/compc.jar" dir="." fork="true" failonerror="true">
                <jvmarg value="-Xmx512m" />
                <arg value="-local-fonts-snapshot=${FLEX_HOME}/frameworks/localFonts.ser"/>
                <arg value="-load-config=${FLEX_HOME}/frameworks/flex-config.xml"/>
                <arg value="-load-config+=${build.dir}/flex-config.xml"/>
                <arg value="-output=@{swcFile}" />
            </java>
        </sequential>
    </macrodef>

    <target name="build" depends="clean, build-swc"/>

    <target name="clean">
        <delete file="bin/flashblocks.swc"/>
    </target>

    <target name="build-swc">
        <build-swc-macro app="flashblocks"/>
    </target>
</project>