Missing libGLw.a in versino 2.427 of setup

[Jeff Felix]

I recently had to reinstall Cygwin from scratch (version 2.427). I got
everything using the setup program. Now, however, I can't link my Open GL
programs because libGLw.a is missing. The include files for this code are
there (e.g. GLwDrawA.h in /usr/X11R6/include/GL) but the library is not.
Looking at the content listed at sources.redhat.com it does not show not it
as part of the xorg-x11-devel where the other Open GL libraries are. Any
ideas? Searches on the web didn't bring up anything useful.