[ndnSIM] Problem with "Trace sources"

[chavoosh ghasemi]

Hi everybody

I have a problem with *trace sources .*When I want use any of them-e.g.
ndn::L3AggregateTracer<http://ndnsim.net/doxygen/classns3_1_1ndn_1_1_l3_aggregate_tracer.html>-
I will take below message :



../scratch/ndn-first-sim.cc: In function ‘int main(int, char**)’:

../scratch/ndn-first-sim.cc:53:8: error: ‘ns3::ndn::L3AggregateTracer’ has
not been declared

../scratch/ndn-first-sim.cc:54:8: error: ‘ns3::ndn::L3RateTracer’ has not
been declared

 I used one of the example that was in the site, without any changes...!

*How I can solve it ?*

*
*

*Thanks…With best regards.*

*--Chavoosh*
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