compiler error on debian 8.2

[ovidiusas]

make[1]: Entering directory '/usr/local/src/rtpbreak/src'
%
%  Compiling rtpbreak v1.3a
%
%  CC...................: cc
%  CFLAGS...............: -Wall -O3  
%  LDFLAGS..............: 
%  LIBS.................: -lpcap -lnet 
%  DEFS.................: 
%
cc -c -DVERSION=\"1.3a\" -Wall -O3    main.c
main.c: In function ‘dissect_udp’:
main.c:207:23: error: invalid application of ‘sizeof’ to incomplete type ‘struct udphdr’
   if (pktlen < sizeof(struct udphdr))
                       ^
main.c:212:25: error: invalid application of ‘sizeof’ to incomplete type ‘struct udphdr’
   len = pktlen - sizeof(struct udphdr);
                         ^
main.c:214:44: error: invalid application of ‘sizeof’ to incomplete type ‘struct udphdr’
   if (len != ntohs(pktudp->uh_ulen)-sizeof(struct udphdr))
                                            ^
main.c: In function ‘sig_stats_handler’:
main.c:1365:7: warning: variable ‘s’ set but not used [-Wunused-but-set-variable]
   int s;
       ^
Makefile:15: recipe for target 'all' failed
make[1]: *** [all] Error 1
make[1]: Leaving directory '/usr/local/src/rtpbreak/src'
Makefile:14: recipe for target 'build' failed
make: *** [build] Error 2

[ovidiusas]

Adding the following include in main.c solves the problem:

#include <linux/udp.h>