[cfe-dev] libstdc++ deprecation warning

[Tim Northover via cfe-dev]

Hi James,

On 5 July 2017 at 15:11, James Walker via cfe-dev
<cfe-dev at lists.llvm.org> wrote:
> I'm just wondering, why does it specify a deployment target of 10.9?  As far
> as I know, libc++ should be able to go back to 10.7.

libc++ existed but the shared library from older versions of macOS had
compatibility issues with the headers included in a modern XCode. You
might be lucky deploying to 10.7, but it's an unsupported
configuration.

Cheers.

Tim.