1//===----------------------------------------------------------------------===//
 2//
 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 4// See https://llvm.org/LICENSE.txt for license information.
 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 6//
 7//===----------------------------------------------------------------------===//
 8
 9#ifndef _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H
10#define _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H
11
12#if defined(__APPLE__)
13
14#  if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
15#    if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500
16#      define _LIBCPP_USE_ULOCK
17#    endif
18#  elif defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
19#    if __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000
20#      define _LIBCPP_USE_ULOCK
21#    endif
22#  elif defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__)
23#    if __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 130000
24#      define _LIBCPP_USE_ULOCK
25#    endif
26#  elif defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__)
27#    if __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000
28#      define _LIBCPP_USE_ULOCK
29#    endif
30#  endif // __ENVIRONMENT_.*_VERSION_MIN_REQUIRED__
31
32#endif // __APPLE__
33
34#endif // _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H