1  #ifndef __A_OUT_GNU_H__
       2  # error "Never use <bits/a.out.h> directly; include <a.out.h> instead."
       3  #endif
       4  
       5  #include <bits/wordsize.h>
       6  
       7  #if __WORDSIZE == 64
       8  
       9  /* Signal to users of this header that this architecture really doesn't
      10     support a.out binary format.  */
      11  #define __NO_A_OUT_SUPPORT 1
      12  
      13  #endif