I wanted to build xemacs b43 in a different directory to test out a
lesstif version.
I created a lesstif directory inside of xemacs-21.2.43. cd to that
directory and "configure --srcdir=.. <my other favorite
options>". Configure works, but while running make, gcc fails to
compile lwlib.c because it can't find s/sol2.h and m/sparc.h.
This used to work in b40 or so, I think.
Ray