Building clang/cling 3.5 for ROOT on Lion

[Chris Jones]

On 08/04/14 01:48, Ryan Schmidt wrote:
>
> On Apr 7, 2014, at 18:09, Christopher Jones wrote:
>
>> p.s. whats the most recent MacPorts clang compiler you can install on OSX10.7 ?
>
> clang 3.4 and earlier should build fine on 10.7.

Indeed. They aren't quite the same thing though in the end, as on OSX 
10.8 and newer it supports c++11, whereas on 10.7 it doesn't, because of 
the underlying system support. So the same clang34 compiler now builds 
root6 fine on OSX10.9, but fails on 10.7.

My recollection of all the previous times c++11 has been discussed, can 
be summarised as there is no obvious way to support it cleanly on older 
OSX releases. So if an upstream package, as ROOT6 has, is actively only 
targetting c++11 supporting compilers, then effectively these ports 
cannot be used on older OSX releases now. Is that correct, or am I being 
overly pessimistic here ?

cheers Chris