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_CONFIG_ELAST 10 #define _LIBCPP_CONFIG_ELAST 11 12 #include <__config> 13 14 #if defined(_LIBCPP_MSVCRT_LIKE) 15 # include <stdlib.h> 16 #else 17 # include <errno.h> 18 #endif 19 20 // Note: _LIBCPP_ELAST needs to be defined only on platforms 21 // where strerror/strerror_r can't handle out-of-range errno values. 22 #if defined(ELAST) 23 # define _LIBCPP_ELAST ELAST 24 #elif defined(_NEWLIB_VERSION) 25 # define _LIBCPP_ELAST __ELASTERROR 26 #elif defined(__NuttX__) 27 // No _LIBCPP_ELAST needed on NuttX 28 #elif defined(__Fuchsia__) 29 // No _LIBCPP_ELAST needed on Fuchsia 30 #elif defined(__wasi__) 31 // No _LIBCPP_ELAST needed on WASI 32 #elif defined(__EMSCRIPTEN__) 33 // No _LIBCPP_ELAST needed on Emscripten 34 #elif defined(__linux__) || defined(_LIBCPP_HAS_MUSL_LIBC) 35 # define _LIBCPP_ELAST 4095 36 #elif defined(__APPLE__) 37 // No _LIBCPP_ELAST needed on Apple 38 #elif defined(__MVS__) 39 # define _LIBCPP_ELAST 1160 40 #elif defined(_LIBCPP_MSVCRT_LIKE) 41 # define _LIBCPP_ELAST (_sys_nerr - 1) 42 #elif defined(_AIX) 43 # define _LIBCPP_ELAST 127 44 #else 45 // Warn here so that the person doing the libcxx port has an easier time: 46 # warning ELAST for this platform not yet implemented 47 #endif 48 49 #endif // _LIBCPP_CONFIG_ELAST 50