This is the Debian prepackaged version of the FSF's GNU m4 macro processor. GNU `m4' has been originally written by René Seindal, from Denmark, with subsequent changes by François Pinard and other volunteers on the Internet. A list of contributors to the GNU program is in the THANKS file in the source distribution, or appended below in the binary package. This package was first put together by Ian Jackson and is currently maintained by Santiago Vila . The GNU sources for this release were obtained from http://ftp.gnu.org/gnu/m4/m4-1.4.17.tar.xz The changes were very minimal - merely adding support for the Debian package maintenance scheme, by adding various debian/* files. Program Copyright (C) 1989-2013 Free Software Foundation, Inc. Modifications for Debian Copyright (C) 1994 Ian Jackson. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. M4 manual (m4.info) Copyright (C) 1989-1994, 2004-2013 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. On Debian systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL', and the complete text of the GNU Free Documentation License can be found in `/usr/share/common-licenses/GFDL'.