I just downloaded make 3.80 from ftp.gnu.org, and you appear to
be wrong about that. Here is an excerpt from make.texi:
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.1 or
any later version published by the Free Software Foundation; with the
Invariant Sections being ``GNU General Public License'', the Front-Cover
Texts being ``A GNU Manual'', and with the Back-Cover Texts being as in
(a) below. A copy of the license is included in the section entitled
``GNU Free Documentation License''.
Front-cover and back-cover texts are invariant.