Stole this ant from @lidev ;) #ane #ant

build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="Adobe Native Extension Packager" default="all" basedir=".">

    <property name="extensionName" value="UserPhotosExtension"/>
    <property name="flexsdk" value="/Users/palebluedot/Documents/Libraries/Flex/flex-4.6.0.23201-air-3.6-asc2-preview5"/>

    <target name="all" depends="clean,init,ios,compileswc,extractswf,copyfiles,package"/>

    <target name="clean">
        <delete dir="build"/>
    </target>

    <target name="init">
        <mkdir dir="build"/>
    </target>

    <target name="ios">
        <!-- TODO: could compile library here also, not just copy it. For now, we're going to have to compile the xcodeproject
        manually into the copy file src parameter velow. -->
        <mkdir dir="build/ios"/> 
        <copy file="src-ios/build/Debug-iphoneos/libUserPhotosExtension.a" todir="build/ios"/>   
    </target>

    <target name="compileswc">
        
        <fileset dir="src-as3/src" casesensitive="yes" id="classfiles">
            <include name="**/*.as"/>
        </fileset>

        <pathconvert property="classlist" refid="classfiles" pathsep=" " dirsep=".">
            <regexpmapper from=".*src.(.*)\.as" to="\1"/>
        </pathconvert> 

            <exec executable="${flexsdk}/bin/compc" failonerror="true">
                <arg line='-source-path src-as3/src'/>
                <arg line='-output build/${extensionName}.swc'/>
                <arg line='-swf-version=17'/>
                <arg line='-external-library-path+="${flexsdk}/frameworks/libs/air/airglobal.swc"'/>
                <arg line='-include-classes ${classlist}'/>
            </exec>  
    
    </target>

    <target name="extractswf">
        <unzip src="build/${extensionName}.swc" dest="build/ios"/>
    </target>

    <target name="copyfiles">
        <copy file="extension.xml" todir="build"/>
        <copy file="platformoptions.xml" todir="build"/>
    </target>

    <target name="package">
        <exec executable="${flexsdk}/bin/adt" failonerror="true">
            <arg value="-package"/>
            <arg value="-target"/>
            <arg value="ane"/>
            <arg value="build/${extensionName}.ane"/>
            <arg value="build/extension.xml"/>
            <arg line="-swc build/${extensionName}.swc"/>
            <arg line="-platform iPhone-ARM -platformoptions build/platformoptions.xml -C build/ios ."/>
        </exec>    
    </target>
</project>