building from source with libc++

[db]

On 19 Apr 2017, at 10:13, Mojca Miklavec <mojca.miklavec.lists at gmail.com> wrote:
> https://trac.macports.org/wiki/XcodeVersionInfo

That doesn't tell me anything different from the output I posted. I still don't exactly know which clang version I have.

> You would run into problems if you installed/built existing ports against libstdc++ and want to build everything against libc++ from now on. In that case you should start from scratch and follow migration instructions.

I already reinstalled everything from scratch with libc++.