// © 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 #endif /* __UPOSIXDEFS_H__ */