@techee isn't it a bug on the clang wrapper if it doesn't switch to a working stdlib when invoked with `-std=c++11` (or otherwise advertises C++11 features)?
Anyway, there are a few options: * use a custom `CXXFLAGS` on your build or build scripts. This is a good workaround, but not a solution if it's a real problem. * add a configure check like I did on the keybidings PR, and possibly checking also whether GCC likes the flag (similar to what we have in GP for checking `CFLAGS`). I might try writing the test if it's useful (and you could try it as I don't have an OSX to build on ^^)