1  /* This file should define __BYTE_ORDER as appropriate for the machine
       2     in question.  See string/endian.h for how to define it.
       3  
       4     If only the stub bits/endian.h applies to a particular configuration,
       5     bytesex.h is generated by running a program on the host machine.
       6     So if cross-compiling to a machine with a different byte order,
       7     the bits/endian.h file for that machine must exist.  */
       8  
       9  #ifndef _ENDIAN_H
      10  # error "Never use <bits/endian.h> directly; include <endian.h> instead."
      11  #endif
      12  
      13  #error Machine byte order unknown.