autoconf: Autoconf-2.56
autoconf: 
autoconf: Autoconf is an extensible package of M4 macros that produce shell
autoconf: scripts to automatically configure software source code packages.
autoconf: These scripts can adapt the packages to many kinds of UNIX-like
autoconf: systems without manual user intervention.  Autoconf creates a
autoconf: configuration script for a package from a template file that lists the
autoconf: operating system features that the package can use, in the form of M4
autoconf: macro calls.
autoconf: