[ns] how to add a cpp file to ns2

[kundavi]

hello friends,

i downloaded some cpp files of odmrp protocol and i want to implement it in
NS2.33.

for example,

i added rtragent.cc and supporting files of it too

but then also i get an error as "invalid command name Agent/RTRAgent".

to make it as a valid command name ..plz help me to make a link between the
c file and tcl file,

with regards

sangeetha.k