Thanks for your reply Step1: sudo ./waf The project was not configured: run "waf configure" first! Step2: same error occurs Step3: also same error occurs. Wonjun, Choi -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.lists.cs.ucla.edu/pipermail/ndnsim/attachments/20150226/f7e5cd43/attachment.html>