<Due it seems to Sun's crapulous organisation of the X libraries and includes,
<most standard (GNU and other) software won't compile out of the box (well, tar
<file). 
<
<Right now I'm trying to make ghostview. It complains it can't find X11/XaW/...
<so I just linked (ln -s) the files from /usr/openwin/share/include/X11 and 
<now the ghoddam thing _still_ complains it can't find them.
<
<I still haven't been able to compile xdvi, not no way.
<
<Has anyone _ever_ managed to get _anything_ normal to compile on a Sun
<(SunOS 4.1.3 and OpenWindows 3)? What's the trick I'm missing? I've even 
<tried hard copying all the relevant files into the "right" places and
<every time, there's some bit missing or it refuses to find it.

Sounds like you didn't load the support for those libraries when OW3.0 was
loaded.  The Xaw support was missing from OW2.0 but added in 3.0.