title: Xcode: Two frameworks that needs two different c++ Standard Library
body: <p>I'm working on an app where I need to use two c++ based frameworks and I can't find how to configure build settings so they both build.</p>
  
  <p>One of them works with C++ Standard Library libc++, the other one, with libstdc++.</p>
  
  <p>Is there a way to specify a c++ library by framework? Or at least, a main c++ library and an exception for the other?</p>
  
  <p>Thanks.</p>