problem in 'make' ing

["N.V.Balaji" <csa98011@cse.iitd.ernet.in>]

Hi,
I am trying  to create a new protocol in ns  and following Marc Gries
tutorial(Creating Ping agent). 

I get the following error while 'make' ing.   (I've done all the necessary
changes in the respective files as instructed by the tutorial)

tclAppInit.o: In function `Tcl_AppInit':
tclAppInit.o(.text+0xc8): undefined reference to `et_ns_lib'
../tclcl-1.0b8/libtclcl.a(Tcl.o): In function `TclObject::traceVar(char
const *, TclObject *)':
Tcl.o(.text+0x590): undefined reference to `__eh_pc'
../tclcl-1.0b8/libtclcl.a(Tcl.o): In function `TclObject::bind(char const
*, double *)':
Tcl.o(.text+0xef0): undefined reference to `__eh_pc'
../tclcl-1.0b8/libtclcl.a(Tcl.o): In function `TclObject::bind_bw(char
const *, double *)':
Tcl.o(.text+0xf6c): undefined reference to `__eh_pc'
../tclcl-1.0b8/libtclcl.a(Tcl.o): In function `TclObject::bind_time(char
const *, double *)':
Tcl.o(.text+0xfe8): undefined reference to `__eh_pc'
../tclcl-1.0b8/libtclcl.a(Tcl.o): In function `TclObject::bind(char const
*, int *)':
Tcl.o(.text+0x105c): undefined reference to `__eh_pc'
../tclcl-1.0b8/libtclcl.a(Tcl.o)(.text+0x10d8): more undefined references
to `__eh_pc' follow
collect2: ld returned 1 exit status
make: *** [ns] Error 1


It would be helpful if someone can point out the problem.
Thanks in advance

Balaji N V