By default, it only remakes those files that are older than their sources. If you install new versions of the GNU Build System, you can make `autoreconf' remake all of the files by giving it the `--force' option.
-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
-i, --install copy missing auxiliary files
--no-recursive don't rebuild sub-packages
-s, --symlink with -i, install symbolic links instead of copies
-m, --make when applicable, re-run ./configure && make
-W, --warnings=CATEGORY report the warnings falling in CATEGORY [syntax]
`cross' cross compilation issues
`gnu' GNU coding standards (default in gnu and gnits modes)
`obsolete' obsolete features or constructions
`override' user redefinitions of Automake rules or variables
`portability' portability issues (default in gnu and gnits modes)
`syntax' dubious syntactic constructs (default)
`unsupported' unsupported or incomplete features (default)
`all' all the warnings
`no-CATEGORY' turn off warnings in CATEGORY
`none' turn off all the warnings
`error' treat warnings as errors
The environment variable `WARNINGS' is honored. Some subtools might support other warning types, using `all' is encouraged.
-B, --prepend-include=DIR prepend directory DIR to search path
-I, --include=DIR append directory DIR to search path
The environment variables AUTOCONF, AUTOHEADER, AUTOMAKE, ACLOCAL, AUTOPOINT, LIBTOOLIZE, M4 are honored.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.
The full documentation for autoreconf is maintained as a Texinfo manual. If the info and autoreconf programs are properly installed at your site, the command
info autoreconfshould give you access to the complete manual.