fpermisive error of gcc using cygwin

[deswal <deswalparveen415 at gmail dot com>]

I am using cygwin 
I am  getting these errors when i compile sim_routing.cc program by this 
command
../../bin/cxx sim_routing.cc
g++ -Wall -o sim_routing sim_routing.cxx

following errors comes
../../common/priority_q.h : In member function 'bool 
guardedQueue<ITEM>::Validate(Const char*);
error : there are no argument to 'strcat' that depend on template parameter so 
a declaration of 'strcat' must be avaible.
error : <if you use -fpermissive  g++ will accept your code but allowing use 
of undeclared name is deprecated>
error : there are no argument to strcat that depends on template parameter,so 
declaration to strcat must be avaible.

           how  these errors can be removed.


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