Dear Could you help me install me NS-2 I got the following message error: e -I../tclbox/include -o trace.o trace.cc In file included from trace.cc:45: tcp.h:175: ANSI C++ forbids declaration `print_if_needed' with no type *** Error code 1 make: Fatal error: Command failed for target `trace.o' Ns make failed! Exiting ... Thank you rahmoune adel