macOS 10.12: libstdc++ is deprecated warning

[silverwind]

• Version: master
• Platform: macOS 10.12, Apple LLVM version 8.0.0 (clang-800.0.38)

make outputs this deprecation warning on macOS 10.12, but otherwise builds fine:

clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9

[bnoordhuis]

We'll start linking to libc++ when the upgrade to V8 5.4 lands.

[silverwind]

Ack, so that's covered.

[gibfahn]

@bnoordhuis Does this mean there's nothing we can do about this for the life of v6?

Node v7 is fine (it's on 5.4)

Edit: Related issue (includes workaround for module authors): nodejs/nan#606

[bnoordhuis]

@gibfahn That's right. We can't change standard libraries without breaking ABI.