Hi Pedro,
  Thanks for your comment.

  I hope this attribute can silent Wunused in GCC build.

  Because it will be nice to declaim GLOBAL_REMOVE_IF_UNREFERENCED before unusd variable than #ifdef

 example1:

#ifdef (UNUSED_CONDITION)

  static Boolean samplvariable;  // which will be triggered the Wunused warning message in GCC

#endif

example2:

  GLOBAL_REMOVE_IF_UNREFERENCED  static Boolean samplvariable; // which will be triggered the Wunused warning message in GCC

  I think example2 will be better than example1.

Best Regards,

Joe Lu