Re: POSIX ruling on up-to-date vs. identical timestamps

[Bob Friesenhahn]

On Thu, 21 Aug 2014, Eric Blake wrote:
> The POSIX recommendation was therefore that GNU should change its
> behavior to act like HP-UX, and consider identical timestamps as
> out-of-date, because the standard will be fixed to allow HP-UX behavior.

A change like this may result in some builds which never complete (or 
take much longer) because the timestamp rules require that something 
be rebuilt (tail chasing).  This is particularly a problem for 
recursive builds which may enter the same directories multiple times.

Bob
--
Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/