the gringo's building error while it is installing opam

[Ryan Schmidt]

On Sep 19, 2015, at 11:19 AM, Ryan Schmidt wrote:

> There are ways to get C++11 support on 10.8 and earlier but it will involve a bit of work on your part, as explained here:
> 
> https://trac.macports.org/wiki/LibcxxOnOlderSystems
> 
> And the gringo port will need changes to support that as well.

The needed changes should be in the gringo port now, if you want to try the instructions above to install it on 10.8.