[PATCH]: bump minimum MPFR version, (includes some fortranbits)

[Tobias Schlüter]

Markus Milleder wrote:
> Adrian Bunk schrieb am 13.10.2008 17:41:15:
>> E.g. the next stable release of Debian will likely ship with 2.3.1 .
>> So in this specific case fulfilling a 2.3.1 requirement would be easy,
>> while a 2.3.2 requirement would make it much harder to build gcc 4.4 .
>>
> Much harder ?
> 
> I don't think anybody who tries to build GCC from source will have any
> problem building MPFR first.

They don't even need to do this, as mpfr can be built in-tree.  It then 
also won't interfere with a system-wide mpfr.

> I can see how a distribution will probably want to have at least the
> MPFR version GCC demands, which would force an MPFR upgrade to
> accompany a GCC 4.4 package.
> 
>> And upgrading from 2.3.1 to let's say 3.0.0 might be a bad choice if
>> the new version contains regressions.

This is moot because for the reason given above, these hypothetical 
regressions are restricted to gcc if the person building gcc is careful.

Cheers,
- Tobi