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#ifndef _LIBCPP_CERRNO
11#define _LIBCPP_CERRNO
12
13/*
14    cerrno synopsis
15
16Macros:
17
18    EDOM
19    EILSEQ  // C99
20    ERANGE
21    errno
22
23*/
24
25#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
26#  include <__cxx03/cerrno>
27#else
28#  include <__config>
29
30#  include <errno.h>
31
32#  ifndef _LIBCPP_ERRNO_H
33#   error <cerrno> tried including <errno.h> but didn't find libc++'s <errno.h> header. \
34          This usually means that your header search paths are not configured properly. \
35          The header search paths should contain the C++ Standard Library headers before \
36          any C Standard Library, and you are probably using compiler flags that make that \
37          not be the case.
38#  endif
39
40#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
41#    pragma GCC system_header
42#  endif
43
44// LWG3869 Deprecate std::errc constants related to UNIX STREAMS
45//
46// This LWG issue deprecates the POSIX macros ENODATA, ENOSR, ENOSTR, and ETIME. These were
47// deprecated in libc++ in https://github.com/llvm/llvm-project/pull/80542.
48// Based on the post commit feedback the macro are no longer deprecated.
49// Instead libc++ leaves the deprecation to the provider of errno.h.
50#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
51
52#endif // _LIBCPP_CERRNO