build failure, GMP not available

[Andrew Pinski]

On Mon, 2006-10-30 at 09:57 -0800, Geoffrey Keating wrote:
> Hi Kaveh,
> 
> 1. Is this intentional?

Yes, do you read any of the mailing lists?
> 
> 2. Is it supposed to apply to the host, the target, or both?

HOST.

> 
> 3. If it's intentional, what is the list of platforms that you  
> intended to prevent building, that is, platforms which GCC used to  
> support but on which GMP or MPFR does not build?

NONE, except for i686-darwin but that is not Kaveh's fault, see below.

> 
> 4. Are you aware that the GMP home page says
> 
> [2006-05-04] GMP does not build on MacInteltosh machines. No fix  
> planned for GMP 4.x.
> 
> and indeed it does not appear to build correctly when configured on  
> my MacBook Pro?

Make GMP build with the C sources only, they should have C sources and
if they don't, then it is a bug with them.

> 
> 5. Are you aware that the GMP home page says
> 
> Note that we chose not to work around all new GCC bugs in this  
> release. Never forget to do  make check  after building the library  
> to make likely it was not miscompiled!
> 
> and therefore this library needs to be part of the bootstrap, not  
> built separately?

Read the mailing list, it has already been mentioned there why.


> 6. The regression tester does actually have GMP installed, but it is,  
> not in /usr/local.  Should this code be searching for GMP and mpfr in  
> more places if it is not found?
> 
> Because of the severe nature of this problem (everything doesn't  
> build, multiple hosts affected), I'd like you to consider backing out  
> this patch until the problems are fixed.  I'll work on a patch which  
> just disables the check for Darwin.

You cannot because the build will be broken with or without the check
for GMP/MPRF because the middle-end uses it already.

Do you read the mailing list?

-- Pinski