Problem when make ns under Windows

[r6921117 <r6921117@ms.cc.ntu.edu.tw>]

Hi,
   I tried to built ns-2.1b3 under Windows NT and using VC++ 5.0.
And I have sucessfully make tcl8.0, tk8.0, and otcl, but when I
try to make the makefile.vc in the Tclcl-1.06b directory, I got
some trouble: the system returned that the line 348 in tcl.cc
using the function "snprintf" which was not declared, and then the
make terminated. Does anyone konw what's wrong?
                   Thanks.