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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2011-2015, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: uposixdefs.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2011jul25
* created by: Markus W. Scherer
*
* Common definitions for implementation files working with POSIX functions.
* *Important*: #include this file before any other header files!
*/
#ifndef __UPOSIXDEFS_H__
#define __UPOSIXDEFS_H__
/*
* Define _XOPEN_SOURCE for access to POSIX functions.
*
* We cannot use U_PLATFORM from platform.h/utypes.h because
* "The Open Group Base Specifications"
* chapter "2.2 The Compilation Environment" says:
* "In the compilation of an application that #defines a feature test macro
* specified by IEEE Std 1003.1-2001,
* no header defined by IEEE Std 1003.1-2001 shall be included prior to
* the definition of the feature test macro."
*/
#ifdef _XOPEN_SOURCE
/* Use the predefined value. */
#else
/*
* Version 6.0:
* The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition)
* also known as
* SUSv3 = Open Group Single UNIX Specification, Version 3 (UNIX03)
*
* Note: This definition used to be in C source code (e.g., putil.c)
* and define _XOPEN_SOURCE to different values depending on __STDC_VERSION__.
* In C++ source code (e.g., putil.cpp), __STDC_VERSION__ is not defined at all.
*/
# define _XOPEN_SOURCE 600
#endif
/*
* Make sure things like readlink and such functions work.
* Poorly upgraded Solaris machines can't have this defined.
* Cleanly installed Solaris can use this #define.
*
* z/OS needs this definition for timeval and to get usleep.
*/
#if !defined(_XOPEN_SOURCE_EXTENDED) && defined(__TOS_MVS__)
# define _XOPEN_SOURCE_EXTENDED 1
#endif
/**
* Solaris says:
* "...it is invalid to compile an XPG6 or a POSIX.1-2001 application with anything other
* than a c99 or later compiler."
* Apparently C++11 is not "or later". Work around this.
*/
#if defined(__cplusplus) && (defined(sun) || defined(__sun)) && !defined (_STDC_C99)
# define _STDC_C99
#endif
#if !defined _POSIX_C_SOURCE && \
defined(__APPLE__) && defined(__MACH__) && !defined(__clang__)
// Needed to prevent EOWNERDEAD issues with GCC on Mac
#define _POSIX_C_SOURCE 200809L
#endif
#endif /* __UPOSIXDEFS_H__ */
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