Add a `LICENSE' section, and `# serial' markers.
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
dnl -*-autoconf-*-
-dnl --- *@-mdw_DECL_ENVIRON-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_DECL_ENVIRON
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Searches for a declaration of the global `environ' variable.
-dnl If one is found in one of the `usual' places, DECL_ENVIRON
-dnl is defined as a preprocessor symbol.
+### SYNOPSIS
+###
+### mdw_DECL_ENVIRON
+###
+### DESCRIPTION
+###
+### Define a preprocessor symbol `DECL_ENVIRON' if the `environ' vector is
+### declared in one of the `usual' places.
+###
+### LICENSE
+###
+### Copyright (c) 1999 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_DECL_ENVIRON],
[AC_CACHE_CHECK([for declaration of \`environ'], mdw_cv_environ,
[AC_EGREP_CPP([\<environ\>],
dnl -*-autoconf-*-
-dnl --- *@-mdw_DEFINE_PATHS-@*
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_DEFINE_PATHS(CODE)
-dnl
-dnl Arguments: CODE = shell script code to execute
-dnl
-dnl Use: Fixes up various variables so that pathname defines can be
-dnl defined. Within CODE, you may use the following macros:
-dnl
-dnl mdw_PROG(NAME) Transformed program name
-dnl
-dnl mdw_PATH(PATH) Expanded path (may contain variables)
-dnl
-dnl mdw_DEFINE_PROG(SYMBOL, PROG)
-dnl Define a symbol as a transformed
-dnl program name.
-dnl
-dnl mdw_DEFINE_PATH(SYMBOL, NAME)
-dnl Define a symbol as an expanded path
+### SYNOPSIS
+###
+### mdw_DEFINE_PATHS(BODY)
+###
+### mdw_PROG(PROG)
+### mdw_PATH(PATH)
+### mdw_DEFINE_PROG(SYMBOL, PROG)
+### mdw_DEFINE_PATH(SYMBOL, PATH)
+###
+### DESCRIPTION
+###
+### This collection of macros is useful for hardcoding pathname strings
+### into binary programs.
+###
+### Within the BODY of `mdw_DEFINE_PATHS', a number of variables are `fixed
+### up' so that they can be properly expanded. The other macros are only
+### really useful within this body.
+###
+### `mdw_PROG' expands, in the shell, to the transformed name of the
+### program PROG.
+###
+### `mdw_PATH' expands, in the shell, to the recursive expansion of PATH,
+### which should be a string containing parameter expansions.
+###
+### `mdw_DEFINE_PROG' is a convenience macro which defines the preprocessor
+### SYMBOL to the result of `mdw_PROG(PROG)'; similarly `mdw_DEFINE_PATH'
+### defines SYMBOL to the result of `mdw_PATH(PATH)'.
+###
+### LICENSE
+###
+### Copyright (c) 2002 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_DEFINE_PATHS],
[mdw_prefix=$prefix mdw_exec_prefix=$exec_prefix
mdw_transform=`echo "$program_transform_name"|sed 's,\\\\\\\\,\\\\,g; s,\\$\\$,$,g'`
dnl -*-autoconf-*-
-dnl --- *@-mdw_DIR_TEXMF-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_DIR_TEXMF
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Sets the substitution `texmfdir' as a sensible TeX install
-dnl tree.
+### SYNOPSIS
+###
+### mdw_DIR_TEXMF
+###
+### DESCRIPTION
+###
+### Define the substitution `@texmfdir@' to name a sensible TeX
+### installation root directory.
+###
+### A `--with-texmfdir' command-line option is defined, which allows the
+### end user to select a specific installation root. The default is chosen
+### according to a heuristic, which is currently to use the first of
+###
+### * `DATADIR/texmf',
+### * `PREFIX/lib/texmf',
+### * `PREFIX/texmf',
+### * `LIBDIR/lib/texmf'.
+###
+### LICENSE
+###
+### Copyright (c) 2002 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_DIR_TEXMF], [
AC_ARG_WITH([texmfdir],
[ --with-texmfdir=DIR set the TeX install directory to DIR],
dnl -*-autoconf-*-
-dnl --- *@-mdw_LIBTOOL_VERSION_INFO-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_LIBTOOL_VERSION
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Decodes the PACKAGE_VERSION variable as a libtool
-dnl version-info string. Strictly speaking, this is very
-dnl naughty.
+### SYNOPSIS
+###
+### mdw_LIBTOOL_VERSION_INFO
+###
+### DESCRIPTION
+###
+### Decodes the `PACKAGE_VERSION' variable as a `libtool' version-info
+### string, available as the `@LIBTOOL_VERSION_INFO@' substitution.
+### Strictly speaking, this is very naughty.
+###
+### 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_LIBTOOL_VERSION_INFO], [
set -- $(echo $PACKAGE_VERSION |
sed 's:[^\([0-9][0-9]*\)\.\([0-9][0-9]*\)\.\([0-9][0-9]*\).*$]:\1 \2 \3:'
dnl -*-autoconf-*-
-dnl --- *@-mdw_MANEXT-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_MANEXT
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Sets the substitution `manext' for man page extensions.
+### SYNOPSIS
+###
+### mdw_MANEXT
+###
+### DESCRIPTION
+###
+### Define the `@manext@' substitution as an extension to append to manpage
+### section names.
+###
+### A `--with-man-ext' command-line option is defined, which allows the end
+### user to override the setting; otherwise it is set to DFLT.
+###
+### LICENSE
+###
+### Copyright (c) 2003 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_MANEXT], [
AC_ARG_WITH([man-ext],
[ --with-man-ext=EXT give manpages the EXT extension (e.g., foo.3EXT)],
dnl -*-autoconf-*-
-dnl --- *@-mdw_SILENT_RULES-@* ---
-dnl
-dnl Author: Mark Wooding
-dnl
-dnl Synopsis: mdw_SILENT_RULES
-dnl
-dnl Arguments: ---
-dnl
-dnl Use: Enables the Automake `silent-rules' feature, if available.
+### SYNOPSIS
+###
+### mdw_SILENT_RULES
+###
+### DESCRIPTION
+###
+### Set Automake's `silent-rules' feature on by default, if available.
+###
+### LICENSE
+###
+### Copyright (c) 2010 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_SILENT_RULES], [
m4_ifdef([AM_SILENT_RULES], [
AM_SILENT_RULES([yes])