| Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| 3 | /* |
| 4 | ******************************************************************************* |
| 5 | * Copyright (C) 2011-2015, International Business Machines |
| 6 | * Corporation and others. All Rights Reserved. |
| 7 | ******************************************************************************* |
| 8 | * file name: uposixdefs.h |
| 9 | * encoding: UTF-8 |
| 10 | * tab size: 8 (not used) |
| 11 | * indentation:4 |
| 12 | * |
| 13 | * created on: 2011jul25 |
| 14 | * created by: Markus W. Scherer |
| 15 | * |
| 16 | * Common definitions for implementation files working with POSIX functions. |
| 17 | * *Important*: #include this file before any other header files! |
| 18 | */ |
| 19 | |
| 20 | #ifndef __UPOSIXDEFS_H__ |
| 21 | #define __UPOSIXDEFS_H__ |
| 22 | |
| 23 | /* |
| 24 | * Define _XOPEN_SOURCE for access to POSIX functions. |
| 25 | * |
| 26 | * We cannot use U_PLATFORM from platform.h/utypes.h because |
| 27 | * "The Open Group Base Specifications" |
| 28 | * chapter "2.2 The Compilation Environment" says: |
| 29 | * "In the compilation of an application that #defines a feature test macro |
| 30 | * specified by IEEE Std 1003.1-2001, |
| 31 | * no header defined by IEEE Std 1003.1-2001 shall be included prior to |
| 32 | * the definition of the feature test macro." |
| 33 | */ |
| 34 | #ifdef _XOPEN_SOURCE |
| 35 | /* Use the predefined value. */ |
| 36 | #else |
| 37 | /* |
| 38 | * Version 6.0: |
| 39 | * The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition) |
| 40 | * also known as |
| 41 | * SUSv3 = Open Group Single UNIX Specification, Version 3 (UNIX03) |
| 42 | * |
| 43 | * Note: This definition used to be in C source code (e.g., putil.c) |
| 44 | * and define _XOPEN_SOURCE to different values depending on __STDC_VERSION__. |
| 45 | * In C++ source code (e.g., putil.cpp), __STDC_VERSION__ is not defined at all. |
| 46 | */ |
| 47 | # define _XOPEN_SOURCE 600 |
| 48 | #endif |
| 49 | |
| 50 | /* |
| 51 | * Make sure things like readlink and such functions work. |
| 52 | * Poorly upgraded Solaris machines can't have this defined. |
| 53 | * Cleanly installed Solaris can use this #define. |
| 54 | * |
| 55 | * z/OS needs this definition for timeval and to get usleep. |
| 56 | */ |
| 57 | #if !defined(_XOPEN_SOURCE_EXTENDED) && defined(__TOS_MVS__) |
| 58 | # define _XOPEN_SOURCE_EXTENDED 1 |
| 59 | #endif |
| 60 | |
| 61 | /** |
| 62 | * Solaris says: |
| 63 | * "...it is invalid to compile an XPG6 or a POSIX.1-2001 application with anything other |
| 64 | * than a c99 or later compiler." |
| 65 | * Apparently C++11 is not "or later". Work around this. |
| 66 | */ |
| 67 | #if defined(__cplusplus) && (defined(sun) || defined(__sun)) && !defined (_STDC_C99) |
| 68 | # define _STDC_C99 |
| 69 | #endif |
| 70 | |
| Victor Chang | d8aa9d5 | 2021-01-05 23:49:57 +0000 | [diff] [blame] | 71 | #if !defined _POSIX_C_SOURCE && \ |
| 72 | defined(__APPLE__) && defined(__MACH__) && !defined(__clang__) |
| 73 | // Needed to prevent EOWNERDEAD issues with GCC on Mac |
| 74 | #define _POSIX_C_SOURCE 200809L |
| 75 | #endif |
| 76 | |
| Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 77 | #endif /* __UPOSIXDEFS_H__ */ |