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// Copyright (C) 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: US-ASCII
* 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) && (U_PLATFORM != U_PF_SOLARIS)
# define _XOPEN_SOURCE_EXTENDED 1
#endif
/*
* There is an issue with turning on _XOPEN_SOURCE_EXTENDED on certain platforms.
* A compatibility issue exists between turning on _XOPEN_SOURCE_EXTENDED and using
* standard C++ string class. As a result, standard C++ string class needs to be
* turned off for the follwing platforms:
* -AIX/VACPP
* -Solaris/GCC
*/
#if (U_PLATFORM == U_PF_AIX && !defined(__GNUC__)) || (U_PLATFORM == U_PF_SOLARIS && defined(__GNUC__))
# if _XOPEN_SOURCE_EXTENDED && !defined(U_HAVE_STD_STRING)
# define U_HAVE_STD_STRING 0
# endif
#endif
#endif /* __UPOSIXDEFS_H__ */
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