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, and MAKE are honored.
This is free software: you are free to change and redistribute it. 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.