A bootstrap-ultralean patch

[H.J. Lu]

> 
> > I made this patch to allow
> > 
> > # make bootstrap-ultralean
> > 
> > which only builds the C compiler for stage 1. It saves both CPU
> > time and disk space.
> 
> The problem with this is that the resulting binary will differ from

I think "will" is a strong word. ultralean still compares the
C part. Someone like me is willing to take the risk of not
comparing the C++, Objc and Fortran parts.

> the binary produced by a normal bootstrap.  It would be particularly
> troublesome if you (or anyone else) were ever to distribute a
> binary release of a gcc produced by this method, resulting possibly
> in bug reports that cannot be duplicated.
> 
> At least do stage 2 (the only purpose for stage 3 is the check).


-- 
H.J. Lu (hjl@gnu.org)