building from source with libc++

[db]

On 24 Mar 2017, at 22:24, Ryan Schmidt <ryandesign at macports.org> wrote:
>> Should I expect to encounter problems when switching to building from source with libc++ for the same ports whose binaries work fine with libstdc++? 
> 
> Certainly; libc++ on 10.8 is a nonstandard configuration that most MacPorts developers have never tested; as such, you're bound to run into as-yet-undiscovered problems that will need to be diagnosed and fixed by someone.
> 
> In addition, you can run into the conflicts anyone could run into when building from source that can arise when building software on non-pristine systems. (Our binaries are produced on our buildbot system which is "pristine" because it has no third-party software installed and no MacPorts ports active when each port is built, ensuring there can be no conflicts.)

Does the buildbot system have a machine with ≤10.8.5 building from source using libc++ as PoC of https://trac.macports.org/wiki/LibcxxOnOlderSystems ?