Support Library Requirements for GCC 7.1

[carl hansen]

On Tue, May 2, 2017 at 5:02 PM, Paul Smith <paul@mad-scientist.net> wrote:
> On Tue, 2017-05-02 at 18:17 -0500, Joel Sherrill wrote:
>> With gcc 6.3.0, we have this in our build recipe:
>>
>> %define mpfr_version   2.4.2
>> %define mpc_version    0.8.1
>> %define gmp_version    4.3.2
>
> Best thing to do is look at the contrib/download_prerequisites script
> that comes with the GCC source code.
>
> The 7.1 version says:
>
>     gmp='gmp-6.1.0.tar.bz2'
>     mpfr='mpfr-3.1.4.tar.bz2'
>     mpc='mpc-1.0.3.tar.gz'
>     isl='isl-0.16.1.tar.bz2'
>
> In general, it's better to just run that script, if possible.
"it's better to just run that script"
One would think.
But 7.1 is outdated.

latest gmp is 6.1.2
latest mpfr os 3.1.5
latest isl is 0.18