How to define a preprocessor symbol in Xcode

by

Go to your Target or Project settings, click the Gear icon at the bottom left, and select “Add User-Defined Setting”. The new setting name should be GCC_PREPROCESSOR_DEFINITIONS, and you can type your definitions in the right-hand field.

Per Steph’s comments, the full syntax is:

constant_1=VALUE constant_2=VALUE

Note that you don’t need the ‘=’s if you just want to #define a symbol, rather than giving it a value (for #ifdef statements)

More Related Contents:

  1. Xcode Preprocessor Output
  2. How do I turn an int into a float? [closed]
  3. Xcode build failure “Undefined symbols for architecture x86_64”
  4. presentViewController: crash on iOS
  5. applications expected to have a root view controller console
  6. Private Methods in Objective-C, in Xcode 4.3 I no longer need to declare them in my implementation file ?
  7. Xcode 4 “Clean” vs. “Clean Build Folder”
  8. [__NSCFDictionary objectAtIndex:]: unrecognized selector sent to instance
  9. Retain Cycle in ARC
  10. Xcode/LLDB: How to get information about an exception that was just thrown?
  11. When converting a project to use ARC what does “switch case is in protected scope” mean?
  12. Xcode throws an exception in Main() in iOS 8 with ‘all exceptions’ breakpoint
  13. Question about @synthesize
  14. Xcode 5: Code signing entitlement errors
  15. Xcode 6 Swift code completion not working
  16. ‘+entityForName: nil is not a legal NSManagedObjectContext parameter – Core Data
  17. Support different orientation for only one view iOS 6
  18. iOS Screenshot part of the screen
  19. Objective-C #import loop
  20. Play Audio iOS Objective-C
  21. Animate infinite scrolling of an image in a seamless loop
  22. Create a thumbnail or image of an AVPlayer at current time
  23. disable autorotate on a single UIViewController in iOS6
  24. Front most window using CGWindowListCopyWindowInfo
  25. How can I get rid of an “unused variable” warning in Xcode?
  26. Apple Mach-O linker and multiple “undefined symbols” error using OpenCV
  27. how to remove subviews from scrollview?
  28. “Initializer element is not a compile-time constant” why?
  29. applicationWillTerminate not getting called on force quit of iOS app
  30. Xcode linker error: file too small for architecture x86_64

Leave a Comment