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adding new protocol in ns2.35

Dear ns2 users, when I add some codes of APIT algorithm in cmu-trace.cc and make, the following error message is generated. Please how I can fix it?

" trace/cmu-trace.cc: In member function ‘void CMUTrace::format_apit(Packet*, int)’:
trace/cmu-trace.cc:1077:45: error: ‘HDR_APIT’ was not declared in this scope
struct hdr_apit *wd = HDR_APIT(p);
^
trace/cmu-trace.cc:1078:60: error: ‘HDR_APIT_BEACON’ was not declared in this scope
struct hdr_apit_beacon *bcn = HDR_APIT_BEACON(p);
^
trace/cmu-trace.cc:1079:57: error: ‘HDR_APIT_RSSI’ was not declared in this scope
struct hdr_apit_rssi *rssi = HDR_APIT_RSSI(p);
^
trace/cmu-trace.cc:1081:22: error: invalid use of incomplete type ‘struct CMUTrace::format_apit(Packet*, int)::hdr_apit’
switch(wd->pkt_type) {
.... "

See my answer here https://stackoverflow.com/questions/...5-ubuntu-16-04

Defined in ``apit_packet.h´´

Code:

#define HDR_APIT(p) ((struct hdr_apit*)hdr_apit::access(p)) 

#define HDR_APIT_BEACON(p) ((struct hdr_apit_beacon*)hdr_apit::access(p))

#define HDR_APIT_RSSI(p) ((struct hdr_apit_rssi*)hdr_apit::access(p))