On Apr 8, 2014, at 03:06, Chris Jones <jon...@hep.phy.cam.ac.uk> wrote:

> 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 ?

Using latest gcc (currently gcc48) might be a way to support C++11 on OS X < 
10.9, but otherwise, with clang, C++11 requires 10.9+.

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