Re: Annoyingly cautious make rules

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Date: Fri, 02 Dec 2011 11:14:03 -0500
> Cc: Andreas Schwab <address@hidden>, address@hidden, address@hidden
> 
> >> > The cache used to be enabled automatically.  How do you enable it now?
> >> $ ./configure --help
> >> [...]
> >> --cache-file=FILE   cache test results in FILE [disabled]
> >> -C, --config-cache      alias for `--cache-file=config.cache'
> >> [...]
> 
> > Why is the default OFF?
> 
> IIUC it's because the expectation is that it's not run very often and
> that current machines are fast enough to make it bearable, the advantage
> being that when you "aptitude upgrade" you won't waste your time
> wondering why configure does not notice that your libjpeg62 doesn't
> exist any more and how to coerce configure into doing its job
> (i.e. find out that you need to remove the config.cache that you'd
> never heard of).
> I.e. the problem of autoconf's cache is that there's no automatic way to
> discover when it's stale.

Thanks.