Autoconf-2.69 as minimum requirement
Autoconf-2.69 was released April 2012 - over ten years ago. There's no point in trying to support older autoconf versions for building freeciv-3.3 (or later).
This affects only autotools based builds.
New patch version with update to configure.ac (autocon's internal version check)
Autoconf-2.69 was released April 2012 - over ten years ago. There's no point in trying to support older autoconf versions for building freeciv-3.3 (or later).
This affects only autotools based builds.