dnl -*-autoconf-*-
-dnl --- *@-mdw_AUTO_VERSION-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_AUTO_VERSION
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Defines an m4 macro AUTO_VERSION which contains the current
-dnl version number, worked out in some clever way.
+### SYNOPSIS
+###
+### mdw_AUTO_VERSION
+###
+### DESCRIPTION
+###
+### Defines an m4 macro `AUTO_VERSION' which contains the current package's
+### version number, worked out in some clever way.
+###
+### The heavy lifting is performed by the `auto-version' script (q.v.). In
+### brief:
+###
+### * if this is a Git working tree (i.e., there is a `.git' file or
+### directory at toplevel) then call `git describe' and use its output;
+###
+### * if there is a `RELEASE' file, then use its contents literally;
+###
+### * if there is a `debian/changelog' file, then use the most recent
+### entry's version number;
+###
+### * otherwise use `UNKNOWN'.
+###
+### LICENSE
+###
+### Copyright (c) 2008 Mark Wooding <mdw@distorted.org.uk>
+###
+### 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 2 of the License, 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.
+###
+### You should have received a copy of the GNU General Public License along
+### with this program. If not, see <http://www.gnu.org/licenses/>.
+###
+### As a special exception, the respective Autoconf Macro's copyright owner
+### gives unlimited permission to copy, distribute and modify the configure
+### scripts that are the output of Autoconf when processing the Macro. You
+### need not follow the terms of the GNU General Public License when using
+### or distributing such scripts, even though portions of the text of the
+### Macro appear in them. The GNU General Public License (GPL) does govern
+### all other use of the material that constitutes the Autoconf Macro.
+###
+### This special exception to the GPL applies to versions of the Autoconf
+### Macro released by the Autoconf Archive. When you make and distribute a
+### modified version of the Autoconf Macro, you may extend this special
+### exception to the GPL to apply to your modified version as well.
+# serial 1
AC_DEFUN([mdw_AUTO_VERSION], [nobody cares...])
m4_define([mdw_AUTO_VERSION], [m4_define([AUTO_VERSION], m4_esyscmd([
ver=UNKNOWN