Package autoconf

A GNU tool for automatically configuring source code

http://www.gnu.org/software/autoconf/

GNU's Autoconf is a tool for configuring source code and Makefiles.
Using Autoconf, programmers can create portable and configurable
packages, since the person building the package is allowed to
specify various configuration options.

You should install Autoconf if you are developing software and
would like to create shell scripts that configure your source code
packages. If you are installing Autoconf, you will also need to
install the GNU m4 package.

Note that the Autoconf package is not required for the end-user who
may be configuring software with an Autoconf-generated script;
Autoconf is only required for the generation of the scripts, not
their use.

General Commands
Command Description
autoconf Generate configuration scripts
autoheader Create a template header for configure
autom4te Generate files and scripts thanks to M4
autoreconf Update generated configuration files
autoscan Generate a preliminary configure.in
autoupdate Update a configure.in to a newer Autoconf
config.guess guess the build system triplet
config.sub validate and canonicalize a configuration triplet
ifnames Extract CPP conditionals from a set of files