[ns] error while running ./install

[Sumitha Bhandarkar <sumitha@dropzone.tamu.edu>]

i have downloaded the ns2.1b6 (allinone).

while i ran the install script i got this error..

rm -f embedded-tcl.cc
./tcl2c++ et_tcl ../tclbox/lib/tcl8.0/init.tcl
../tclbox/lib/tcl8.0/history.tcl
  ../tclbox/lib/tcl8.0/word.tcl  ../tclbox/lib/tcl8.0/http2.0/http.tcl >
embedded-tcl.cc
ld.so.1: ./tcl2c++: fatal: libstdc++.so.2.10.0: can't open file: errno=2
*** Error code 137
make: Fatal error: Command failed for target `embedded-tcl.cc'
tclcl-1.0b9 make failed! Exiting ...                                  

someone please tell me what is happening and what to do. without this if i
do a make clean and a make it fails to compile scheduler.cc .

thanks in advance
Sumitha