<div dir="ltr"><div dir="ltr"><div>I tried following the step b step procedure to install the ndnSIM but this error shows up constantly. Any help in solving this would be much appreciated.</div><div>Thank you.</div><div dir="ltr"><br></div><div dir="ltr">./waf --run=ndn-simple<br>Traceback (most recent call last):<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Scripting.py", line 119, in waf_entry_point<br>    run_commands()<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Scripting.py", line 178, in run_commands<br>    parse_options()<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Scripting.py", line 158, in parse_options<br>    ctx.execute()<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Options.py", line 198, in execute<br>    super(OptionsContext,self).execute()<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 85, in execute<br>    self.recurse([os.path.dirname(g_module.root_path)])<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 126, in recurse<br>    user_function(self)<br>  File "/home/smandapati/ndnSIM/ns-3/wscript", line 256, in options<br>    opt.recurse('src')<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 126, in recurse<br>    user_function(self)<br>  File "/home/smandapati/ndnSIM/ns-3/src/wscript", line 51, in options<br>    opt.recurse(module, mandatory=False)<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 126, in recurse<br>    user_function(self)<br>  File "/home/smandapati/ndnSIM/ns-3/src/ndnSIM/wscript", line 21, in options<br>    tooldir=['%s/ndn-cxx/.waf-tools' % opt.path.abspath()])<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 80, in load<br>    module=load_tool(t,path,with_sys_path=with_sys_path)<br>  File "/home/smandapati/ndnSIM/ns-3/.waf3-2.0.18-ff4ae9f5cc05353d3dc3aeff8854ae69/waflib/Context.py", line 373, in load_tool<br>    __import__(tool)<br>ModuleNotFoundError: No module named 'doxygen'</div></div></div>