On 2018-03-08, at 4:27 PM, Ryan Schmidt wrote:

> How will users upgrade from libstdc++ to libc++? What subset of the 
> instructions on the LibcxxOnOlderSystems page would they have to follow? What 
> if they don't do that and stay on libstdc++?

We do have to ponder the bootstrap toolchain process carefully. There is a 
clang-3.4 build that is against libstdc++ as a stepping stone, and some ld64 
bootstrapping. 

Probably need to walk it through on a VM to make sure it all jives. I can help 
with that, as I'm sure others can.

Ken



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