build failure, GMP not available

[Andrew Pinski]

> 
> > So, now if I tell you that despite all reports that it 'works fine',  
> > I'm getting
> > 
> > > FAIL: gcc.dg/torture/builtin-sin-mpfr-1.c  -O0  (test for excess  
> > > errors)
> > 
> > do you think this is likely to be:
> > 1. some problem in gmp or mpfr,
> > 2. some problem in my build of gmp and/or mpfr, that wouldn't occur  
> > if I'd built it in some other (unspecified) way,
> > 3. some problem in my existing system configuration, maybe I already  
> > have a gmp installed that is somehow conflicting, or
> > 4. a well-known but not serious bug in GCC's Darwin port?
> > 
> > It turns out the answer is 4, at least I think it is.
> 
> Actually it is a bug in mpfr which is fixed in the cumulative patch.

http://gcc.gnu.org/ml/gcc-patches/2006-10/msg01175.html

Note thata testcase has the following comment:
/* Version 2.2.0 of MPFR had bugs in sin rounding.  This test checks
   to see if that buggy version was installed.  The problem is fixed
   in the MPFR cumulative patch http://www.mpfr.org/mpfr-current and
   presumably later MPFR versions.

   Origin: Kaveh R. Ghazi 10/23/2006.  */

So ...

-- Pinski