User's feedback:
I'd like to send You my opinion about the code snippet Example 5-6 Packaging Native Libraries into JAR Files.
In this snippet I think there is several small errors. It would be fine If You verify this.
1) :
    <fx:jar destfile="${basedir}/build/native-libs-win-x86.jar"
    basedir="native/windows/x86" includes="*"/>
In fact we do not have basedir attribute in reference and also in sdk. I was forced to do sth like this :
    <fx:jar destfile="${basedir}/build/native-libs-win-x86.jar">
      <fx:fileset dir="${basedir}/natives/windows/x86" includes="*"/>
    </fx:jar>

Igor:
checked code and there is no basedir attribute on fx:jar

there is basedir on fx:fileset but in this case it simply should be <jar> and not <fx:jar>.
Please fix the sample.