1 /* Features part to handle 64-bit time_t support. 2 Copyright (C) 2021 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 38