<div dir="ltr">Hi Xuxiang<div><br></div><div>I guess you are missing <font face="monospace, monospace">NS_LOG_COMPONENT_DEFINE</font>.</div><div>See <a href="https://www.nsnam.org/docs/release/3.22/manual/html/logging.html#how-to-add-logging-to-your-code">https://www.nsnam.org/docs/release/3.22/manual/html/logging.html#how-to-add-logging-to-your-code</a></div><div><br></div><div>Yours, Junxiao</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 15, 2016 at 3:03 PM, Xuxiang Tian <span dir="ltr"><<a href="mailto:xuxiangtian@ucla.edu" target="_blank">xuxiangtian@ucla.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I have included declaration below<div><br><div><font face="garamond, serif">#include "ns3/log.h" </font></div><div><div><font face="garamond, serif">#include "ns3/ndnSIM/NFD/common.hpp"</font></div><div><font face="garamond, serif">#include "ns3/ndnSIM/NFD/core/logger.<wbr>hpp" </font></div></div><div><br></div><div>But when I tried to compile a cpp file including sentence <font face="garamond, serif">NS_LOG_FUNCTION(this << &interest), </font><font face="arial, helvetica, sans-serif">I met the following problem. Kindly, please let me know if you have some thoughts</font><br></div><div><div><font face="garamond, serif"><br></font></div><div><div><font face="garamond, serif">../src/ndnSIM/model/ndn-net-<wbr>device-link-service.cpp:60:3: error: use of undeclared identifier 'g_log'</font></div><div><font face="garamond, serif">./ns3/log-macros-enabled.h:<wbr>219:11: note: expanded from macro 'NS_LOG_FUNCTION'</font></div><div><font face="garamond, serif">          NS_LOG_APPEND_TIME_PREFIX;                            \</font></div><div><font face="garamond, serif">          ^</font></div><div><font face="garamond, serif">./ns3/log-macros-enabled.h:40:<wbr>7: note: expanded from macro 'NS_LOG_APPEND_TIME_PREFIX'</font></div><div><font face="garamond, serif">  if (g_log.IsEnabled (ns3::LOG_PREFIX_TIME))                   \</font></div><div><font face="garamond, serif">      ^</font></div></div><div><font face="garamond, serif"><br></font></div><div>--</div><div>Xuxiang</div></div></div></div>
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