Re: AC_CACHE_CHECK

[Thomas Dickey]

On Sun, 5 Sep 2010, Russell Shaw wrote:

> Thomas Dickey wrote:
> > On Sun, 5 Sep 2010, Russell Shaw wrote:
> >
> > > Hi,
> > > When should AC_CACHE_CHECK be used? Whenever the user uninstalls
> > > something, wouldn't the cache become invalid?
> >
> > ...only if the user happened to uninstall something during the configure
> > process.  After that, AC_CACHE_CHECK is irrelevant.
>
> But if the user uninstalls libfoo then later re-runs ./configure,
> won't libfoo still be assumed to be installed?

sure.  That sort of thing was why (for a long time) autoconf removed
the cache on startup.  Now that you're mentioning it, I seem to recall
a recent undoing of that.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net