sysdeps/generic/bits/endian.h

   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.