Regina Rexx Interpreter
From Open Watcom
The Regina Rexx distribution comes with a ready to roll Open Watcom Wmake file.
Build is as simple as
wmake -f <supplied-make-file>
No clean is provided but ignore file dates will rebuild all
wmake -a -f <supplied-make-file>
The build includes two example user extension C dll showing how it is done.
Writing C++ extensions is more tricky, see the Open Watcom newgroup.

