Trouble building latest svn head

[Dhruv Matani]

Hello Ian,

On Wed, Jul 25, 2012 at 5:09 PM, Ian Lance Taylor <iant@google.com> wrote:

> This appears to be a problem with your C library.  On your system
> /usr/include/features.h does #include <bits/predefs.h>, but
> bits/predefs.h does not exist.  There isn't much GCC can do to help
> there.
>
> If you look at /usr/include/features.h you may find some other ideas.

It seems that predefs.h does exist, but it resides at:
/usr/include/i386-linux-gnu/bits/ and not /usr/include/bits/

Is there some hack that I can do (set some env. vars. maybe) to let
gcc search that path as well for includes?