change libcxx +emultated_tls to installing a binary please on < 10.7...

[Ken Cunningham]

On 2020-12-01 10:01 a.m., Ryan Schmidt wrote:
>
> apple-gcc42's +bootstrap variant is not suitable for the buildbot either because of that manual step.


Just so I understand the equipment -- is the buildbot system at all 
manually controllable?


ie is it even technically possible to do this on it:

sudo port install clang-5.0

sudo port upgrade --enforce-variants libcxx -bootstrap


Ken