You can get swig to initialise stubtable like so:
  .....
  %module blah
  %init %{
    if (Tcl_InitStubs(interp, "8.0", 0) == NULL) {
      return TCL_ERROR;
    }
    Tcl_GlobalEval(interp, "package provide blah 0.0");
  %}
  .....

