autoconf  2.71
About: GNU Autoconf is an extensible package of M4 macros that produce shell scripts to automatically configure software source code packages.
  Fossies Dox: autoconf-2.71.tar.xz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

autoconf Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies autoconf-2.71.tar.xz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).
-*- text -*-


Autoconf is an extensible package of M4 macros that produce shell
scripts to automatically configure software source code packages.
These scripts can adapt the packages to many kinds of UNIX-like
systems without manual user intervention.  Autoconf creates a
configuration script for a package from a template file that lists the
operating system features that the package can use, in the form of M4
macro calls.

Producing configuration scripts using Autoconf requires GNU M4 and
Perl.  You should install GNU M4 (version 1.4.6 or later is required;
1.4.14 or later is recommended) and Perl (5.006 or later) before
configuring Autoconf, so that Autoconf's configure script can find
them.  The configuration scripts produced by Autoconf are
self-contained, so their users do not need to have Autoconf (or GNU
M4, Perl, etc.).

You can get GNU M4 here:

The file INSTALL should be distributed with packages that use
Autoconf-generated configure scripts and Makefiles that conform to the
GNU coding standards.  The package's README can just give an overview
of the package, where to report bugs, and a pointer to INSTALL for
instructions on compilation and installation.  This removes the need
to maintain many similar sets of installation instructions.

Be sure to read BUGS and INSTALL.

Mail suggestions to, report bugs to, and submit patches to
All changes can be tracked at the read-only
Always include the Autoconf version number, which you can get by
running `autoconf --version'.  Archives of can be
found in <>, and
similarly for the other mailing lists.


Autoconf is released under the General Public License version 3 (GPLv3+).
Additionally, Autoconf includes a licensing exception in some of its
source files; see the respective copyright notices for how your
project is impacted by including scripts generated by Autoconf, and the
COPYING.EXCEPTION file for the exception in terms of the Additional
Permissions as described in section 7 of GPLv3.

For more licensing information, see
<> and

For any copyright year range specified as YYYY-ZZZZ in this package
note that the range specifies every single year in that closed interval.


Copyright (C) 1992-1994, 1998, 2000-2017, 2020-2021 Free Software
Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.  This file is offered as-is,
without warranty of any kind.