Two new makefiles for the Raspberry PI patform are included in the 10.4.0 preview version:
http://www.newlisp.org/downloads/development/inprogress/
See also links to http://russelldavis.org/ in the CHANGES files.
These makefiles do not need readline libraries installed.
That's cool. When I first read about Raspberry Pi I wondered whether it might be suitable for newLISP. Makes me want one to play with now...