title: Xcode Error - Use of undeclared identifier 'CFByteOrder' inside 'NSByteOrder' file
body: <p>I want to build a project on iPhone simulator </p>
  
  <p>This a simple project that does not have much code, however, I am receiving an error of "Use of undeclared identifier 'CFByteOrderUnknown'"</p>
  
  <p>in file:
  Xcode10_2.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.2.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSByteOrder.h:9:27</p>