1 /* 2 ******************************************************************************* 3 * Copyright (C) 2011-2012, International Business Machines 4 * Corporation and others. All Rights Reserved. 5 ******************************************************************************* 6 * file name: uposixdefs.h 7 * encoding: US-ASCII 8 * tab size: 8 (not used) 9 * indentation:4 10 * 11 * created on: 2011jul25 12 * created by: Markus W. Scherer 13 * 14 * Common definitions for implementation files working with POSIX functions. 15 * *Important*: #include this file before any other header files! 16 */ 17 18 #ifndef __UPOSIXDEFS_H__ 19 #define __UPOSIXDEFS_H__ 20 21 /* 22 * Define _XOPEN_SOURCE for access to POSIX functions. 23 * 24 * We cannot use U_PLATFORM from platform.h/utypes.h because 25 * "The Open Group Base Specifications" 26 * chapter "2.2 The Compilation Environment" says: 27 * "In the compilation of an application that #defines a feature test macro 28 * specified by IEEE Std 1003.1-2001, 29 * no header defined by IEEE Std 1003.1-2001 shall be included prior to 30 * the definition of the feature test macro." 31 */ 32 #ifdef _XOPEN_SOURCE 33 /* Use the predefined value. */ 34 #else 35 /* 36 * Version 6.0: 37 * The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition) 38 * also known as 39 * SUSv3 = Open Group Single UNIX Specification, Version 3 (UNIX03) 40 * 41 * Note: This definition used to be in C source code (e.g., putil.c) 42 * and define _XOPEN_SOURCE to different values depending on __STDC_VERSION__. 43 * In C++ source code (e.g., putil.cpp), __STDC_VERSION__ is not defined at all. 44 */ 45 # define _XOPEN_SOURCE 600 46 #endif 47 48 /* 49 * Make sure things like readlink and such functions work. 50 * Poorly upgraded Solaris machines can't have this defined. 51 * Cleanly installed Solaris can use this #define. 52 * 53 * z/OS needs this definition for timeval and to get usleep. 54 */ 55 #if !defined(_XOPEN_SOURCE_EXTENDED) 56 # define _XOPEN_SOURCE_EXTENDED 1 57 #endif 58 59 /* 60 * There is an issue with turning on _XOPEN_SOURCE_EXTENDED on certain platforms. 61 * A compatibility issue exists between turning on _XOPEN_SOURCE_EXTENDED and using 62 * standard C++ string class. As a result, standard C++ string class needs to be 63 * turned off for the follwing platforms: 64 * -AIX/VACPP 65 * -Solaris/GCC 66 */ 67 #if (U_PLATFORM == U_PF_AIX && !defined(__GNUC__)) || (U_PLATFORM == U_PF_SOLARIS && defined(__GNUC__)) 68 # if _XOPEN_SOURCE_EXTENDED && !defined(U_HAVE_STD_STRING) 69 # define U_HAVE_STD_STRING 0 70 # endif 71 #endif 72 73 #endif /* __UPOSIXDEFS_H__ */ 74
