1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 // For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html 11 12 #ifndef _LIBCPP___CHRONO_TZDB_H 13 #define _LIBCPP___CHRONO_TZDB_H 14 15 #include <version> 16 // Enable the contents of the header only when libc++ was built with experimental features enabled. 17 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) 18 19 # include <string> 20 21 # if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 22 # pragma GCC system_header 23 # endif 24 25 _LIBCPP_BEGIN_NAMESPACE_STD 26 27 # if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) && \ 28 !defined(_LIBCPP_HAS_NO_LOCALIZATION) 29 30 namespace chrono { 31 32 struct _LIBCPP_AVAILABILITY_TZDB tzdb { 33 string version; 34 }; 35 36 } // namespace chrono 37 38 # endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_TIME_ZONE_DATABASE) && !defined(_LIBCPP_HAS_NO_FILESYSTEM) 39 // && !defined(_LIBCPP_HAS_NO_LOCALIZATION) 40 41 _LIBCPP_END_NAMESPACE_STD 42 43 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_TZDB) 44 45 #endif // _LIBCPP___CHRONO_TZDB_H 46