-bits, the Tcl executable will need to be recompiled
as a 64-bit application.  In addition, all libraries, wrapper code,
and every other part of your application will need to be compiled for
64-bits.  If you plan to use other third-party extension modules, they
will also have to be recompiled as 64-bit extensions.
</p>

<p>
If you are wrapping commercial software for which you have no source
code, you will be forced to use the same linking standard as used by
that software.  This may prevent the use of 64-b