This was added to support compilation on macOS 10.10, our minimum required macOS is now 10.15. macOS has also supported it since 10.11. See https://github.com/bitcoin/bitcoin/pull/9063.
This was added to support compilation on macOS 10.10, our minimum required macOS is now 10.15. macOS has also supported it since 10.11. See https://github.com/bitcoin/bitcoin/pull/9063.