For building nedit-5.3 (or 5.1.1) in Cygwin 1.3.12 with XFree86 4.2.0 and lesstif 0.93.18, change /usr/X11R6.4/ to /usr/X11R6/ in makefiles/Makefile.cygwin, lines 10 and 12 (or 5 and 7 in nedit-5.1.1). (discuss@nedit.org: I am not subscribed to this mailing list)