Bad 4NT error when running under TCSH

I am building SRC680_m117 on an XP=Pro platform under
cygwin. I ran ./configure asking for tcsch.
Switched to tcsch, ran ./bootstrap, source, and rehash.

As far as I know, I do not now, and never have installed
4NT.

Then, dmake started and ended with this error:

=============
Building project beanshell
=============
/cygdrive/c/downloads/openOffice/src680_m117/beanshell
mkout -- version: 1.4
4NT version too old!
force_dmake_to_error
dmake:  Error -- force_dmake_to_error: No such file or
directory
dmake:  Error code -1, while making
'unsupported_4nt_version'

The error occurs after the directory wntmsci10.pro has been
copied into /beanshell

When I am running under tcsh, why is the compiler looking
for 4NT? Am I required to install 4NT? 
NOTE: 4NT is not even mentioned at
http://tools.openoffice.org/dev_docs/build_windows_tcsh.html

Is there a fix for this?

Thanks
Jack