DESCRIPTION: GNU Autoconf is an extensible package for localizing software installations.

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.  You should
install GNU M4 (at least version 1.4.6, although 1.4.13 or later is
recommended) before configuring Autoconf, so that Autoconf's configure
script can find it.  The configuration scripts produced by Autoconf are
self-contained, so their users do not need to have Autoconf (or GNU M4).