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(autoconf.info)autoreconf Invocation

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Using `autoreconf' to Update `configure' Scripts
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   Installing the various components of the GNU Build System can be
tedious: running `gettextize', `automake' etc. in each directory.  It
may be needed either because some tools such as `automake' have been
updated on your system, or because some of the sources such as
`configure.ac' have been updated, or finally, simply in order to
install the GNU Build System in a fresh tree.

   It runs `autoconf', `autoheader', `aclocal', `automake',
`libtoolize', and `gettextize' (when appropriate) repeatedly to update
the GNU Build System in specified directories, and their subdirectories
(Note: Subdirectories).  By default, it only remakes those files that
are older than their sources.

   If you install a new version of some tools, you can make
`autoreconf' remake _all_ of the files by giving it the `--force'
option.

   Note: Automatic Remaking, for `Makefile' rules to automatically
remake `configure' scripts when their source files change.  That method
handles the timestamps of configuration header templates properly, but
does not pass `--autoconf-dir=DIR' or `--localdir=DIR'.

`autoreconf' accepts the following options:

`--help'
`-h'
     Print a summary of the command line options and exit.

`--version'
`-V'
     Print the version number of Autoconf and exit.

`--verbose'
     Print the name of each directory where `autoreconf' runs
     `autoconf' (and `autoheader', if appropriate).

`--debug'
`-d'
     Don't remove the temporary files.

`--force'
`-f'
     Remake even `configure' scripts and configuration headers that are
     newer than their input files (`configure.ac' and, if present,
     `aclocal.m4').

`--install'
`-i'
     Copy missing auxiliary files.  This option is similar to the option
     `--add-missing' in `automake'.

`--symlink'
`-s'
     Instead of copying missing auxiliary files, install symbolic links.

`--include=DIR'
`-I DIR'
     Also look for input files in DIR.  Multiple invocations
     accumulate.  Directories are browsed from last to first.