Ian Kelly wrote:
Generally speaking, the way configure checks for features is by writing a short program that uses the feature and trying to compile it.
And it uses that approach because it's designed to cope with the unix world, where things are nowhere near as neat and tidy as being able to just look at the version number of your OS and conclude that a certain set of features are available. -- Greg -- https://mail.python.org/mailman/listinfo/python-list