[Ada] Bootstrapping mainline GNAT fails

[Florian Weimer]

Andreas Schwab <schwab@suse.de> writes:

> Florian Weimer <fw@deneb.enyo.de> writes:
>
> |> On GNU/Linux, matters are even worse because recent GNU libc versions
> |> do not support gcc 2.8.1 anymore, IIRC.
>
> This is not true.  Everything past and including 2.8.1 is supported.

Yes, mixed this with the GNU libc build requirements.

While we are at it, how severe are the 2.7/2.8 floating point issues
mentioned in the GNU libc INSTALL document? Do we have to care about
these when building GCC?