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Sortix cross-volatile manual

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ACLOCAL(1)

User Commands

ACLOCAL(1)

NAME

aclocal - Generate aclocal.m4 by scanning configure.ac

SYNOPSIS

aclocal [ ,OPTION/]...

DESCRIPTION

Generate 'aclocal.m4' by scanning 'configure.ac' or 'configure.in'

OPTIONS

--automake-acdir=,DIR/: directory holding automake-provided m4 files

--aclocal-path=,PATH/: colon-separated list of directories to search for third-party local files

--system-acdir=,DIR/: directory holding third-party system-wide files

--diff[=,COMMAND/]: run COMMAND [diff -u] on M4 files that would be changed (implies --install and --dry-run)

--dry-run: pretend to, but do not actually update any file

--force: always update output file

--help: print this help, then exit

-I DIR: add directory to search list for .m4 files

--install: copy third-party files to the first -I directory

--output=,FILE/: put output in FILE (default aclocal.m4)

--print-ac-dir: print name of directory holding system-wide third-party m4 files, then exit

--verbose: don't be silent

--version: print version number, then exit

-W, --warnings=,CATEGORY/: report the warnings falling in CATEGORY, defaults to $WARNINGS

Warning categories are:

cross: cross compilation issues

gnu: GNU coding standards (default in gnu and gnits modes)

obsolete: obsolete features or constructions (default)

override: user redefinitions of Automake rules or variables

portability: portability issues (default in gnu and gnits modes)

portability-recursive: nested Make variables (default with -Wportability)

extra-portability: extra portability issues related to obscure tools

syntax: dubious syntactic constructs (default)

unsupported: unsupported or incomplete features (default)

-W also understands:

all: turn on all the warnings

none: turn off all the warnings

no-CATEGORY: turn off warnings in CATEGORY

error: treat all enabled warnings as errors

AUTHOR

Written by Tom Tromey <tromey@redhat.com>

: and Alexandre Duret-Lutz <adl@gnu.org>.

REPORTING BUGS

Report bugs to <bug-automake@gnu.org>.

GNU Automake home page: <https://www.gnu.org/software/automake/>.

General help using GNU software: <https://www.gnu.org/gethelp/>.

COPYRIGHT

Copyright © 2025 Free Software Foundation, Inc. License GPLv2+: GNU GPL version 2 or later <https://gnu.org/licenses/gpl-2.0.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

The full documentation for aclocal is maintained as a Texinfo manual. If the info and aclocal programs are properly installed at your site, the command

: info automake

should give you access to the complete manual.

January 2026

GNU automake 1.18.1