Re: config.cache considered harmful

[Lars Hecking]

> Martin> I think I used `unset'.  And XEmacs' configure uses `unset'
> Martin> today, and no one I know of has hit this non-portability.
> 
> I claim that machines without Bourne shells supporting unset and
> functions are no longer to be considered.  No single guy could name me
> such a broken machine.  I'd really love that we move to functions some
> day.
 
 /bin/sh on Ultrix. Check out the list archives from April 1999. Tom Tromey
 mentioned that autoconf could adopt the "re-exec non-losing shell" approach
 by Metaconfig-generated scripts.