I'm trying to compile mongo-cxx-driver on OS X (AppleClang). I've got errors like this:

error: implicit instantiation of undefined template 'std::__1::basic_string<char,

Full output is here: https://gist.github.com/messa/00892e97f0a22b99f2a2

I've fixed it by adding #include <string> to a few files, see here:

https://github.com/messa/mongo-cxx-driver/commit/9d526e76952415e0b8936513b1cc8c2a326348c9

Now it compiles successfully. Please consider to add these #includes to upstream