Problems building applications under Roell's X386 1.1

[George Vokalek]

After successfully installing Roell's X386 1.1, I find difficulty
in building any X applications.  The problem occurs at link time
with the following message:

undefined                       first referenced
 symbol                             in file
grantpt                             /usr/lib/libX11.a
unlockpt                            /usr/lib/libX11.a
ptsname                             /usr/lib/libX11.a
ld fatal: Symbol referencing errors. No output written to xloadimage

I cannot find these functions anywhere in my ISC distribution.  Can
someone suggest  where I might find them?

 ..G..