Binary package “autoconf” in ubuntu zesty

automatic configure script builder

 The standard for FSF source packages. This is only useful if you
 write your own programs or if you extensively modify other people's
 programs.
 .
 For an extensive library of additional Autoconf macros, install the
 `autoconf-archive' package.
 .
 This version of autoconf is not compatible with scripts meant for
 Autoconf 2.13 or earlier.