autoupdate - Update a configure.in to a newer Autoconf

       Written by David J. MacKenzie and Akim Demaille.

       Copyright 1994, 1999, 2000, 2001 Free Software Foundation, Inc.
       This  is  free  software;  see  the  source  for  copying conditions.  There is NO warranty; not even for
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

       Update the TEMPLATE-FILE... if given, or `configure.ac' if present, or else `configure.in', to the syntax
       of the current version of Autoconf.  The original files are backed up.

   Operationmodes:-h, --help
              print this help, then exit

       -V, --version
              print version number, then exit

       -v, --verbose
              verbosely report processing

       -d, --debug
              don't remove temporary files

   Librarydirectories:-A, --autoconf-dir=ACDIR
              Autoconf's macro files location (rarely needed)

       -l, --localdir=DIR
              location of `aclocal.m4'

   Environmentvariables:
       M4     GNU M4 1.4 or above

       AUTOCONF
              autoconf 2.52.20240618

       autoupdate - Update a configure.in to a newer Autoconf

       Report bugs to <dickey@invisible-island.net>.

autoconf(1), autoreconf(1), autoupdate(1), autoheader(1),  autoscan(1),  config.guess(1),  config.sub(1),
       ifnames(1), libtool(1).

       The  full  documentation  for  autoupdate  is maintained as a Texinfo manual.  If the info and autoupdate
       programs are properly installed at your site, the command

              infoautoupdate

       should give you access to the complete manual.

GNU Autoconf 2.52.20240618                          June 2024                                      AUTOUPDATE(1)

autoupdate [OPTION] ...  [TEMPLATE-FILE...]