78 lines
2.6 KiB
C++
78 lines
2.6 KiB
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: 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__ */
|