Fragment of an ANT script to compile Flex Hero for devices.

build.xml

<target name="compile"> 
     <echo message="Compiling swf"/>
     <mxmlc file="${full path to the project File}" output="${Name for the compiled swf}"> 
          <load-config filename="${FLEX_HOME}/frameworks/airmobile-config.xml"/> 
          <source-path path-element="${FLEX_HOME}/frameworks"/>
          <static-link-runtime-shared-libraries />
	  <!-- Include this piece to pull in the Flex Framework or it won't compile. -->		
          <compiler.library-path dir="${FLEX_HOME}/frameworks" append="true">
               <include name="libs/*" />
          </compiler.library-path>
     </mxmlc>
</target>