Hi A new version of WFQ for the NS-2 simulator is available. http://www.cc.jyu.fi/~sayenko/src/wfq-1.2.5.tar.gz The new version solves several small compilation problems that you can experience if you use the latest gcc compiler versions. This version has been tested with the following NS-2 versions: v2.27, v.2.28, v2.29 and v2.30.
Sincerely, Alexander Sayenko (PhD) Senior Assistant Telecommunication laboratory, MIT department University of Jyvaskyla, Finland