about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/features-time64.h
blob: af9d84daa7dfe4174e9f977b2c76c5c0df1ce47b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
/* Features part to handle 64-bit time_t support.
   Copyright (C) 2021-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* We need to know the word size in order to check the time size.  */
#include <bits/wordsize.h>
#include <bits/timesize.h>

#if defined _TIME_BITS
# if _TIME_BITS == 64
#  if ! defined (_FILE_OFFSET_BITS) || _FILE_OFFSET_BITS != 64
#   error "_TIME_BITS=64 is allowed only with _FILE_OFFSET_BITS=64"
#  elif __TIMESIZE == 32
#   define __USE_TIME_BITS64	1
#  endif
# elif _TIME_BITS == 32
#  if __TIMESIZE > 32
#   error "_TIME_BITS=32 is not compatible with __TIMESIZE > 32"
#  endif
# else
#  error Invalid _TIME_BITS value (can only be 32 or 64-bit)
# endif
#endif