title: Can't choose libc++ or libstdc++ in XCode
body: <p>I am trying to build a project in XCode which uses both Cinder and OpenSubdiv.</p>
  
  <p>They conflict in many ways and I have solved most problems but the last one is giving me a headache.</p>
  
  <p>I have a linker error: </p>
  
  <p>"Undefined symbols for architecture x86_64: "std::__throw_length_error(char const*)", referenced from: blah blah</p>
  
  <p>After a bit of research I found that I should change "C++ Standard Library" from libc++ to libstdc++.</p>
  
  <p>However, Cinder complains and tells me that it <em>requires</em> libc++. So I am stuck.</p>
  
  <p>I managed to get Cinder and OpenSubdiv working together on windows, but on mac it is really difficult. Is there any possible way of solving this? </p>