autoconf: autoupdate Invocation

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1 18.3 Using `autoupdate' to Modernize `configure.ac'
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1 
1 The `autoupdate' program updates a `configure.ac' file that calls
1 Autoconf macros by their old names to use the current macro names.  In
1 version 2 of Autoconf, most of the macros were renamed to use a more
1 uniform and descriptive naming scheme.  ⇒Macro Names, for a
1 description of the new scheme.  Although the old names still work
1 (⇒Obsolete Macros, for a list of the old macros and the
1 corresponding new names), you can make your `configure.ac' files more
1 readable and make it easier to use the current Autoconf documentation
1 if you update them to use the new macro names.
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1    If given no arguments, `autoupdate' updates `configure.ac', backing
1 up the original version with the suffix `~' (or the value of the
1 environment variable `SIMPLE_BACKUP_SUFFIX', if that is set).  If you
1 give `autoupdate' an argument, it reads that file instead of
1 `configure.ac' and writes the updated file to the standard output.
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1 `autoupdate' accepts the following options:
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1 `--help'
1 `-h'
1      Print a summary of the command line options and exit.
1 
1 `--version'
1 `-V'
1      Print the version number of Autoconf and exit.
1 
1 `--verbose'
1 `-v'
1      Report processing steps.
1 
1 `--debug'
1 `-d'
1      Don't remove the temporary files.
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1 `--force'
1 `-f'
1      Force the update even if the file has not changed.  Disregard the
1      cache.
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1 `--include=DIR'
1 `-I DIR'
1      Also look for input files in DIR.  Multiple invocations accumulate.
1      Directories are browsed from last to first.
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1 `--prepend-include=DIR'
1 `-B DIR'
1      Prepend directory DIR to the search path.  This is used to include
1      the language-specific files before any third-party macros.
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