sysdeps/unix/sysv/linux/features-time64.h

   1 /* Features part to handle 64-bit time_t support.
   2    Copyright (C) 2021-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* We need to know the word size in order to check the time size.  */
  20 #include <bits/wordsize.h>
  21 #include <bits/timesize.h>
  22
  23 #if defined _TIME_BITS
  24 # if _TIME_BITS == 64
  25 #  if ! defined (_FILE_OFFSET_BITS) || _FILE_OFFSET_BITS != 64
  26 #   error "_TIME_BITS=64 is allowed only with _FILE_OFFSET_BITS=64"
  27 #  elif __TIMESIZE == 32
  28 #   define __USE_TIME_BITS64    1
  29 #  endif
  30 # elif _TIME_BITS == 32
  31 #  if __TIMESIZE > 32
  32 #   error "_TIME_BITS=32 is not compatible with __TIMESIZE > 32"
  33 #  endif
  34 # else
  35 #  error Invalid _TIME_BITS value (can only be 32 or 64-bit)
  36 # endif
  37 #endif