In the 4.0.1 releasedocs/documentation docs, the 'Getting Started' page, it says under the heading 'JAR Files and Requirements':
Smack is meant to be easily embedded into any existing JDK 1.5 or later Java application. It has no external dependencies (except for the Jingle voice chat functionality) and is optimized to be as small as possible.
Sorry if this has been fixed in the latest reivision, 4.0.1 was the latest when I went to grab it.
Is this a documentation error then? Is there a recommended implementation or will any of them (that you can find from the pullparser website that has not been updated in a VERY long time) do?