Migrating off libstdc++4.6?

[Daniel Cheng]

libstdc++4.6 seems to be missing quite a few things. Among others:

- Many things in <type_traits>, such as is_copy_constructible and is_move_constructible

- std::map::emplace

- ???

Is this something we'll get for free once we drop support for Debian 7/Ubuntu 12.04/etc [1]?

Daniel

[1] https://chrome.blogspot.com/2015/11/updates-to-chrome-platform-support.html

[Nico Weber]

I think so, but it'll take a while.

We could also consider statically linking chrome to libc++ like we do on OS X -- I don't think we depend on any C++ system libraries (?)

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