RE: updating target at the end of recipe, after updating prerequisites, might not work?

[Mark Galeck (CW)]

>Of course.  Setting and storing the mod time on a file is up to the
filesystem.  Some filesystems support timestamps with granularity of 1


Yes Paul, but that is not my main problem.  My main problem is that, on a 
single filesystem that supports sub-second timestamps, some utilities make use 
of sub-second timestamps, and some don't.  If a utility that supports them is 
used in prerequisite recipes, and a utility that rounds to the nearest second, 
happens to be used in the target recipe, but a utility that supports sub-second 
timestamp is used in recipes for that target's prerequisites,  you see we have 
a problem!  Next rebuild may well think prerequisites are newer than the 
target, and will rebuild unnecessarily.  


How do you propose to deal with that?  Am I the first one that has this 
problem?  I can't believe that...