C++11 on Mountain Lion and lower?

[Chris Jones]

Hi,


> - The only C++ runtime that Apple provides on all systems since 10.5(?)
>    is the one delivered with gcc 4.2.1. I really doubt that Apple
>    will change that to a recent libc++

You are wrong on this point. Apple have been abandoning gcc in favour of 
clang/LLVM over the last few OSX releases, and finished this in 10.9 
which does *not* have a 'gcc' compiler at all. OSX also does have 
libc++. In fact, its the only C++ runtime in 10.9.

On OSX Macports explicitly links using the libc++ runtime, where as on 
older releases it

This is exactly why c++11 code is fine on OSX10.9, as the default 
compiler libc++ used there supports it, but not on older OSC releases. 
This is why the c++ issue and OSX versions are mixed up here.

Chris