If you had a month to improve gcc build parallelization, where would you begin?

[NightStrike]

On Tue, Apr 9, 2013 at 9:50 PM, David Brown <david@westcontrol.com> wrote:
> And of course if someone figures out how to speed up ./configure with
> gcc, the same technique could probably be used on thousands of other
> programs.

Is gcc already using a new enough autoconf (2.64+) to take advantage
of shell functions?  That has been a big speedup in general with
configure.  I know it's more of an evolutionary rather than
revolutionary change, but every bit helps.