tr1 depreceation

Hello, running into some troubles using this in Xcode, Mac OSX 10.11 - specifically with tr1 <unsigned_map>

Managed to get it compiling by setting the C++ environment to "standard library with C++11 support", then setting build settings target to OSX 10.7+... but now running into lots of run-time errors with freeimage

Any pointers? 
