maintainer-clean is no longer relevant to this issue.
So if 'make bootstrap' fails, it may be necessary first to do 'make
maintainer-clean' to clear out these stale files. You can then try
-again, starting with `./configure'. (Occasionally the loaddefs.el
-file gets into a bad state due to changes in the Lisp libraries; this
-procedure forces it to be regenerated.)
+again, starting with `./configure'.
Normally, it is not necessary to use "make bootstrap" after every CVS
update. Unless there are problems, we suggest using the following