# phpman > info > autoupdate

[AUTOUPDATE(1)](https://www.chedong.com/phpMan.php/man/AUTOUPDATE/1/markdown)                    User Commands                   [AUTOUPDATE(1)](https://www.chedong.com/phpMan.php/man/AUTOUPDATE/1/markdown)

NAME
       autoupdate - Update a configure.ac to a newer Autoconf

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

DESCRIPTION
       Update  each  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.

   Operation modes:
       -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

       -f, --force
              consider all files obsolete

   Library directories:
       -B, --prepend-include=DIR
              prepend directory DIR to search path

       -I, --include=DIR
              append directory DIR to search path

AUTHOR
       Written by David J. MacKenzie and Akim Demaille.

REPORTING BUGS
       Report bugs to <<bug-autoconf@gnu.org>>.
       GNU Autoconf home page: <<https://www.gnu.org/software/autoconf/>>.
       General help using GNU software: <<https://www.gnu.org/gethelp/>>.

COPYRIGHT
       Copyright (C) 2021 Free Software Foundation, Inc.  License GPLv3+/Auto-
       conf: GNU GPL version 3 or  later  <<https://gnu.org/licenses/gpl.html>>,
       <<https://gnu.org/licenses/exceptions.html>>
       This  is  free  software:  you  are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       [autoconf(1)](https://www.chedong.com/phpMan.php/man/autoconf/1/markdown), [automake(1)](https://www.chedong.com/phpMan.php/man/automake/1/markdown), [autoreconf(1)](https://www.chedong.com/phpMan.php/man/autoreconf/1/markdown), [autoupdate(1)](https://www.chedong.com/phpMan.php/man/autoupdate/1/markdown),  [autoheader(1)](https://www.chedong.com/phpMan.php/man/autoheader/1/markdown),
       [autoscan(1)](https://www.chedong.com/phpMan.php/man/autoscan/1/markdown), [config.guess(1)](https://www.chedong.com/phpMan.php/man/config.guess/1/markdown), [config.sub(1)](https://www.chedong.com/phpMan.php/man/config.sub/1/markdown), [ifnames(1)](https://www.chedong.com/phpMan.php/man/ifnames/1/markdown), [libtool(1)](https://www.chedong.com/phpMan.php/man/libtool/1/markdown).

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

              info autoupdate

       should give you access to the complete manual.

GNU Autoconf 2.71                 August 2021                    [AUTOUPDATE(1)](https://www.chedong.com/phpMan.php/man/AUTOUPDATE/1/markdown)