michael@0: /*
michael@0: *******************************************************************************
michael@0: *   Copyright (C) 2011-2012, International Business Machines
michael@0: *   Corporation and others.  All Rights Reserved.
michael@0: *******************************************************************************
michael@0: *   file name:  uposixdefs.h
michael@0: *   encoding:   US-ASCII
michael@0: *   tab size:   8 (not used)
michael@0: *   indentation:4
michael@0: *
michael@0: *   created on: 2011jul25
michael@0: *   created by: Markus W. Scherer
michael@0: *
michael@0: *   Common definitions for implementation files working with POSIX functions.
michael@0: *   *Important*: #include this file before any other header files!
michael@0: */
michael@0: 
michael@0: #ifndef __UPOSIXDEFS_H__
michael@0: #define __UPOSIXDEFS_H__
michael@0: 
michael@0: /*
michael@0:  * Define _XOPEN_SOURCE for access to POSIX functions.
michael@0:  *
michael@0:  * We cannot use U_PLATFORM from platform.h/utypes.h because
michael@0:  * "The Open Group Base Specifications"
michael@0:  * chapter "2.2 The Compilation Environment" says:
michael@0:  * "In the compilation of an application that #defines a feature test macro
michael@0:  * specified by IEEE Std 1003.1-2001,
michael@0:  * no header defined by IEEE Std 1003.1-2001 shall be included prior to
michael@0:  * the definition of the feature test macro."
michael@0:  */
michael@0: #ifdef _XOPEN_SOURCE
michael@0:     /* Use the predefined value. */
michael@0: #else
michael@0:     /*
michael@0:      * Version 6.0:
michael@0:      * The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition)
michael@0:      * also known as
michael@0:      * SUSv3 = Open Group Single UNIX Specification, Version 3 (UNIX03)
michael@0:      *
michael@0:      * Note: This definition used to be in C source code (e.g., putil.c)
michael@0:      * and define _XOPEN_SOURCE to different values depending on __STDC_VERSION__.
michael@0:      * In C++ source code (e.g., putil.cpp), __STDC_VERSION__ is not defined at all.
michael@0:      */
michael@0: #   define _XOPEN_SOURCE 600
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * Make sure things like readlink and such functions work.
michael@0:  * Poorly upgraded Solaris machines can't have this defined.
michael@0:  * Cleanly installed Solaris can use this #define.
michael@0:  *
michael@0:  * z/OS needs this definition for timeval and to get usleep.
michael@0:  */
michael@0: #if !defined(_XOPEN_SOURCE_EXTENDED)
michael@0: #   define _XOPEN_SOURCE_EXTENDED 1
michael@0: #endif
michael@0: 
michael@0: /*
michael@0:  * There is an issue with turning on _XOPEN_SOURCE_EXTENDED on certain platforms.
michael@0:  * A compatibility issue exists between turning on _XOPEN_SOURCE_EXTENDED and using
michael@0:  * standard C++ string class. As a result, standard C++ string class needs to be
michael@0:  * turned off for the follwing platforms:
michael@0:  *  -AIX/VACPP
michael@0:  *  -Solaris/GCC
michael@0:  */
michael@0: #if (U_PLATFORM == U_PF_AIX && !defined(__GNUC__)) || (U_PLATFORM == U_PF_SOLARIS && defined(__GNUC__))
michael@0: #   if _XOPEN_SOURCE_EXTENDED && !defined(U_HAVE_STD_STRING)
michael@0: #   define U_HAVE_STD_STRING 0
michael@0: #   endif
michael@0: #endif
michael@0: 
michael@0: #endif  /* __UPOSIXDEFS_H__ */