<div dir="ltr"><div class="gmail_extra">Thanks for your reply.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Step1: I did ./waf configure but the same error occurs.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Step2: I deleted ndn-cxx folder from the system and re-downloaded it.</div><div class="gmail_extra"><br></div></div>