Re: why are all prerequisites timestamps checked, even after one is found to be newer than target??

[Eli Zaretskii]

> From: Paul Smith <address@hidden>
> Date: Mon, 14 Dec 2009 14:08:32 -0500
> Cc: "address@hidden" <address@hidden>
> 
> On Mon, 2009-12-14 at 10:32 -0800, Mark Galeck (CW) wrote:
> > I see.  I grepped $? and it seems to me there is no way to prevent
> > that variable from being populated, so all the timestamps will always
> > be checked, nothing I can do about, right?
> 
> There is no way to disable the population of any of the automatic
> variables, no: they are automatically populated for every target before
> the target recipe is evaluated.
> 
> I guess maybe Windows is different

Is it?  Mark, can you show a simple Makefile where this behavior is
painful, and provide some timings on your machine?