Swarm on OS X 10.9

[Joshua Root]

> On Feb 6, 2014, at 00:48, Degang Wu wrote:
> 
>> Is there any progress in "porting" swarm to OS X 10.9? What prevents it to build on 10.9? I tried to build it from the source, but have encountered errors after errors.
> 
> I don’t know why the port is disabled on Mavericks.

I would guess because it doesn't build with clang and contains C++.
Because llvm-g++-4.2 always uses libstdc++, it's only safe to build C++
with it on Mavericks when none of the dependencies and dependents
contain any C++ code, or all of them also link with libstdc++.

- Josh