ACLOCAL(1) User Commands ACLOCAL(1)

aclocal - manual page for aclocal 1.16.5

aclocal [OPTION]...

Generate 'aclocal.m4' by scanning '' or ''

directory holding automake-provided m4 files
directory holding third-party system-wide files
run COMMAND [diff -u] on M4 files that would be changed (implies --install and --dry-run)
pretend to, but do not actually update any file
always update output file
print this help, then exit
add directory to search list for .m4 files
copy third-party files to the first -I directory
put output in FILE (default aclocal.m4)
print name of directory holding system-wide third-party m4 files, then exit
don't be silent
print version number, then exit
report the warnings falling in CATEGORY

cross compilation issues
GNU coding standards (default in gnu and gnits modes)
obsolete features or constructions (default)
user redefinitions of Automake rules or variables
portability issues (default in gnu and gnits modes)
nested Make variables (default with -Wportability)
extra portability issues related to obscure tools
dubious syntactic constructs (default)
unsupported or incomplete features (default)
all the warnings
turn off warnings in CATEGORY
turn off all the warnings
treat warnings as errors

Written by Tom Tromey <>

and Alexandre Duret-Lutz <>.

Report bugs to <>.
GNU Automake home page:
General help using GNU software:

Copyright © 2021 Free Software Foundation, Inc. License GPLv2+: GNU GPL version 2 or later
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 aclocal is maintained as a Texinfo manual. If the info and aclocal programs are properly installed at your site, the command

info aclocal

should give you access to the complete manual.

March 2023 GNU automake 1.16.5