[tlbuild] always static libstdc++?

[Mojca Miklavec]

On Fri, 31 Aug 2018 at 20:08, Karl Berry wrote:
>
> On the other hand, I thought there might be some platforms where we do
> distribute binaries with the C++ libraries dynamically linked, for
> whatever reason, and that's ok. (So then I wouldn't make that change.)

On Mac it seems to be impossible to build it statically, at least not
out-of-the-box (maybe it works if one compiles libc++/stdlibc++ from
source and links against that one).

Mojca