17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 52b6e762cSahl * Common Development and Distribution License (the "License"). 62b6e762cSahl * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 212b6e762cSahl 227c478bd9Sstevel@tonic-gate /* 23ba3594baSGarrett D'Amore * Copyright 2013 Garrett D'Amore <garrett@damore.org> 24fc2512cfSRobert Mustacchi * Copyright 2016 Joyent, Inc. 25*df5cd018SRobert Mustacchi * Copyright 2022 Oxide Computer Company 26ba3594baSGarrett D'Amore * 272b6e762cSahl * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 287c478bd9Sstevel@tonic-gate * Use is subject to license terms. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #ifndef _SYS_FEATURE_TESTS_H 327c478bd9Sstevel@tonic-gate #define _SYS_FEATURE_TESTS_H 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #include <sys/ccompile.h> 357c478bd9Sstevel@tonic-gate #include <sys/isa_defs.h> 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate #ifdef __cplusplus 387c478bd9Sstevel@tonic-gate extern "C" { 397c478bd9Sstevel@tonic-gate #endif 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate /* 427c478bd9Sstevel@tonic-gate * Values of _POSIX_C_SOURCE 437c478bd9Sstevel@tonic-gate * 447c478bd9Sstevel@tonic-gate * undefined not a POSIX compilation 457c478bd9Sstevel@tonic-gate * 1 POSIX.1-1990 compilation 467c478bd9Sstevel@tonic-gate * 2 POSIX.2-1992 compilation 477c478bd9Sstevel@tonic-gate * 199309L POSIX.1b-1993 compilation (Real Time) 487c478bd9Sstevel@tonic-gate * 199506L POSIX.1c-1995 compilation (POSIX Threads) 497c478bd9Sstevel@tonic-gate * 200112L POSIX.1-2001 compilation (Austin Group Revision) 502d08521bSGarrett D'Amore * 200809L POSIX.1-2008 compilation 517c478bd9Sstevel@tonic-gate */ 527c478bd9Sstevel@tonic-gate #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) 537c478bd9Sstevel@tonic-gate #define _POSIX_C_SOURCE 1 547c478bd9Sstevel@tonic-gate #endif 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate /* 572d08521bSGarrett D'Amore * The feature test macros __XOPEN_OR_POSIX, _STRICT_STDC, _STRICT_SYMBOLS, 582d08521bSGarrett D'Amore * and _STDC_C99 are Sun implementation specific macros created in order to 592d08521bSGarrett D'Amore * compress common standards specified feature test macros for easier reading. 607c478bd9Sstevel@tonic-gate * These macros should not be used by the application developer as 617c478bd9Sstevel@tonic-gate * unexpected results may occur. Instead, the user should reference 62bbf21555SRichard Lowe * standards(7) for correct usage of the standards feature test macros. 637c478bd9Sstevel@tonic-gate * 647c478bd9Sstevel@tonic-gate * __XOPEN_OR_POSIX Used in cases where a symbol is defined by both 657c478bd9Sstevel@tonic-gate * X/Open or POSIX or in the negative, when neither 667c478bd9Sstevel@tonic-gate * X/Open or POSIX defines a symbol. 677c478bd9Sstevel@tonic-gate * 687c478bd9Sstevel@tonic-gate * _STRICT_STDC __STDC__ is specified by the C Standards and defined 697c478bd9Sstevel@tonic-gate * by the compiler. For Sun compilers the value of 707c478bd9Sstevel@tonic-gate * __STDC__ is either 1, 0, or not defined based on the 717c478bd9Sstevel@tonic-gate * compilation mode (see cc(1)). When the value of 727c478bd9Sstevel@tonic-gate * __STDC__ is 1 and in the absence of any other feature 737c478bd9Sstevel@tonic-gate * test macros, the namespace available to the application 747c478bd9Sstevel@tonic-gate * is limited to only those symbols defined by the C 757c478bd9Sstevel@tonic-gate * Standard. _STRICT_STDC provides a more readable means 767c478bd9Sstevel@tonic-gate * of identifying symbols defined by the standard, or in 777c478bd9Sstevel@tonic-gate * the negative, symbols that are extensions to the C 787c478bd9Sstevel@tonic-gate * Standard. See additional comments for GNU C differences. 797c478bd9Sstevel@tonic-gate * 807c478bd9Sstevel@tonic-gate * _STDC_C99 __STDC_VERSION__ is specified by the C standards and 817c478bd9Sstevel@tonic-gate * defined by the compiler and indicates the version of 827c478bd9Sstevel@tonic-gate * the C standard. A value of 199901L indicates a 837c478bd9Sstevel@tonic-gate * compiler that complies with ISO/IEC 9899:1999, other- 847c478bd9Sstevel@tonic-gate * wise known as the C99 standard. 852d08521bSGarrett D'Amore * 86fc2512cfSRobert Mustacchi * _STDC_C11 Like _STDC_C99 except that the value of __STDC_VERSION__ 87fc2512cfSRobert Mustacchi * is 201112L indicating a compiler that compiles with 8800efb5e1SYuri Pankov * ISO/IEC 9899:2011, otherwise known as the C11 standard. 89fc2512cfSRobert Mustacchi * 902d08521bSGarrett D'Amore * _STRICT_SYMBOLS Used in cases where symbol visibility is restricted 912d08521bSGarrett D'Amore * by the standards, and the user has not explicitly 922d08521bSGarrett D'Amore * relaxed the strictness via __EXTENSIONS__. 937c478bd9Sstevel@tonic-gate */ 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate #if defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) 967c478bd9Sstevel@tonic-gate #define __XOPEN_OR_POSIX 977c478bd9Sstevel@tonic-gate #endif 987c478bd9Sstevel@tonic-gate 997c478bd9Sstevel@tonic-gate /* 100fc2512cfSRobert Mustacchi * ISO/IEC 9899:1990 and it's revisions, ISO/IEC 9899:1999 and ISO/IEC 101fc2512cfSRobert Mustacchi * 99899:2011 specify the following predefined macro name: 1027c478bd9Sstevel@tonic-gate * 1037c478bd9Sstevel@tonic-gate * __STDC__ The integer constant 1, intended to indicate a conforming 1047c478bd9Sstevel@tonic-gate * implementation. 1057c478bd9Sstevel@tonic-gate * 1067c478bd9Sstevel@tonic-gate * Furthermore, a strictly conforming program shall use only those features 1077c478bd9Sstevel@tonic-gate * of the language and library specified in these standards. A conforming 1087c478bd9Sstevel@tonic-gate * implementation shall accept any strictly conforming program. 1097c478bd9Sstevel@tonic-gate * 1107c478bd9Sstevel@tonic-gate * Based on these requirements, Sun's C compiler defines __STDC__ to 1 for 1117c478bd9Sstevel@tonic-gate * strictly conforming environments and __STDC__ to 0 for environments that 1127c478bd9Sstevel@tonic-gate * use ANSI C semantics but allow extensions to the C standard. For non-ANSI 1137c478bd9Sstevel@tonic-gate * C semantics, Sun's C compiler does not define __STDC__. 1147c478bd9Sstevel@tonic-gate * 1157c478bd9Sstevel@tonic-gate * The GNU C project interpretation is that __STDC__ should always be defined 1167c478bd9Sstevel@tonic-gate * to 1 for compilation modes that accept ANSI C syntax regardless of whether 1177c478bd9Sstevel@tonic-gate * or not extensions to the C standard are used. Violations of conforming 1187c478bd9Sstevel@tonic-gate * behavior are conditionally flagged as warnings via the use of the 1197c478bd9Sstevel@tonic-gate * -pedantic option. In addition to defining __STDC__ to 1, the GNU C 1207c478bd9Sstevel@tonic-gate * compiler also defines __STRICT_ANSI__ as a means of specifying strictly 1217c478bd9Sstevel@tonic-gate * conforming environments using the -ansi or -std=<standard> options. 1227c478bd9Sstevel@tonic-gate * 1237c478bd9Sstevel@tonic-gate * In the absence of any other compiler options, Sun and GNU set the value 1247c478bd9Sstevel@tonic-gate * of __STDC__ as follows when using the following options: 1257c478bd9Sstevel@tonic-gate * 1267c478bd9Sstevel@tonic-gate * Value of __STDC__ __STRICT_ANSI__ 1277c478bd9Sstevel@tonic-gate * 1287c478bd9Sstevel@tonic-gate * cc -Xa (default) 0 undefined 1297c478bd9Sstevel@tonic-gate * cc -Xt (transitional) 0 undefined 1307c478bd9Sstevel@tonic-gate * cc -Xc (strictly conforming) 1 undefined 1317c478bd9Sstevel@tonic-gate * cc -Xs (K&R C) undefined undefined 1327c478bd9Sstevel@tonic-gate * 1337c478bd9Sstevel@tonic-gate * gcc (default) 1 undefined 1347c478bd9Sstevel@tonic-gate * gcc -ansi, -std={c89, c99,...) 1 defined 1357c478bd9Sstevel@tonic-gate * gcc -traditional (K&R) undefined undefined 1367c478bd9Sstevel@tonic-gate * 1377c478bd9Sstevel@tonic-gate * The default compilation modes for Sun C compilers versus GNU C compilers 1387c478bd9Sstevel@tonic-gate * results in a differing value for __STDC__ which results in a more 1397c478bd9Sstevel@tonic-gate * restricted namespace when using Sun compilers. To allow both GNU and Sun 1407c478bd9Sstevel@tonic-gate * interpretations to peacefully co-exist, we use the following Sun 1417c478bd9Sstevel@tonic-gate * implementation _STRICT_STDC_ macro: 1427c478bd9Sstevel@tonic-gate */ 1437c478bd9Sstevel@tonic-gate 1447c478bd9Sstevel@tonic-gate #if (__STDC__ - 0 == 1 && !defined(__GNUC__)) || \ 1457c478bd9Sstevel@tonic-gate (defined(__GNUC__) && defined(__STRICT_ANSI__)) 1467c478bd9Sstevel@tonic-gate #define _STRICT_STDC 1477c478bd9Sstevel@tonic-gate #else 1487c478bd9Sstevel@tonic-gate #undef _STRICT_STDC 1497c478bd9Sstevel@tonic-gate #endif 1507c478bd9Sstevel@tonic-gate 1517c478bd9Sstevel@tonic-gate /* 152fc2512cfSRobert Mustacchi * Compiler complies with ISO/IEC 9899:1999 or ISO/IEC 9989:2011 1537c478bd9Sstevel@tonic-gate */ 1547c478bd9Sstevel@tonic-gate 155fc2512cfSRobert Mustacchi #if __STDC_VERSION__ - 0 >= 201112L 156fc2512cfSRobert Mustacchi #define _STDC_C11 157fc2512cfSRobert Mustacchi #endif 158fc2512cfSRobert Mustacchi 1597c478bd9Sstevel@tonic-gate #if __STDC_VERSION__ - 0 >= 199901L 1607c478bd9Sstevel@tonic-gate #define _STDC_C99 1617c478bd9Sstevel@tonic-gate #endif 1627c478bd9Sstevel@tonic-gate 1637c478bd9Sstevel@tonic-gate /* 1642d08521bSGarrett D'Amore * Use strict symbol visibility. 1652d08521bSGarrett D'Amore */ 1662d08521bSGarrett D'Amore #if (defined(_STRICT_STDC) || defined(__XOPEN_OR_POSIX)) && \ 1672d08521bSGarrett D'Amore !defined(__EXTENSIONS__) 1682d08521bSGarrett D'Amore #define _STRICT_SYMBOLS 1692d08521bSGarrett D'Amore #endif 1702d08521bSGarrett D'Amore 1712d08521bSGarrett D'Amore /* 172*df5cd018SRobert Mustacchi * This is a variant of _STRICT_SYMBOLS that is meant to cover headers that are 173*df5cd018SRobert Mustacchi * governed by POSIX, but have not been governed by ISO C. One can go two ways 174*df5cd018SRobert Mustacchi * on what should happen if an application actively includes (not transitively) 175*df5cd018SRobert Mustacchi * a header that isn't part of the ISO C spec, we opt to say that if someone has 176*df5cd018SRobert Mustacchi * gone out of there way then they're doing it for a reason and that is an act 177*df5cd018SRobert Mustacchi * of non-compliance and therefore it's not up to us to hide away every symbol. 178*df5cd018SRobert Mustacchi * 179*df5cd018SRobert Mustacchi * In general, prefer using _STRICT_SYMBOLS, but this is here in particular for 180*df5cd018SRobert Mustacchi * cases where in the past we have only used a POSIX related check and we don't 181*df5cd018SRobert Mustacchi * wish to make something stricter. Often applications are relying on the 182*df5cd018SRobert Mustacchi * ability to, or more realistically unwittingly, have _STRICT_STDC declared and 183*df5cd018SRobert Mustacchi * still use these interfaces. 184*df5cd018SRobert Mustacchi */ 185*df5cd018SRobert Mustacchi #if (defined(__XOPEN_OR_POSIX) && !defined(__EXTENSIONS__)) 186*df5cd018SRobert Mustacchi #define _STRICT_POSIX 187*df5cd018SRobert Mustacchi #endif 188*df5cd018SRobert Mustacchi 189*df5cd018SRobert Mustacchi /* 1907c478bd9Sstevel@tonic-gate * Large file interfaces: 1917c478bd9Sstevel@tonic-gate * 1927c478bd9Sstevel@tonic-gate * _LARGEFILE_SOURCE 1937c478bd9Sstevel@tonic-gate * 1 large file-related additions to POSIX 1947c478bd9Sstevel@tonic-gate * interfaces requested (fseeko, etc.) 1957c478bd9Sstevel@tonic-gate * _LARGEFILE64_SOURCE 1967c478bd9Sstevel@tonic-gate * 1 transitional large-file-related interfaces 1977c478bd9Sstevel@tonic-gate * requested (seek64, stat64, etc.) 1987c478bd9Sstevel@tonic-gate * 1997c478bd9Sstevel@tonic-gate * The corresponding announcement macros are respectively: 2007c478bd9Sstevel@tonic-gate * _LFS_LARGEFILE 2017c478bd9Sstevel@tonic-gate * _LFS64_LARGEFILE 2027c478bd9Sstevel@tonic-gate * (These are set in <unistd.h>.) 2037c478bd9Sstevel@tonic-gate * 2047c478bd9Sstevel@tonic-gate * Requesting _LARGEFILE64_SOURCE implies requesting _LARGEFILE_SOURCE as 2057c478bd9Sstevel@tonic-gate * well. 2067c478bd9Sstevel@tonic-gate * 2077c478bd9Sstevel@tonic-gate * The large file interfaces are made visible regardless of the initial values 2087c478bd9Sstevel@tonic-gate * of the feature test macros under certain circumstances: 2097c478bd9Sstevel@tonic-gate * - If no explicit standards-conforming environment is requested (neither 2107c478bd9Sstevel@tonic-gate * of _POSIX_SOURCE nor _XOPEN_SOURCE is defined and the value of 2117c478bd9Sstevel@tonic-gate * __STDC__ does not imply standards conformance). 2127c478bd9Sstevel@tonic-gate * - Extended system interfaces are explicitly requested (__EXTENSIONS__ 2137c478bd9Sstevel@tonic-gate * is defined). 2147c478bd9Sstevel@tonic-gate * - Access to in-kernel interfaces is requested (_KERNEL or _KMEMUSER is 2157c478bd9Sstevel@tonic-gate * defined). (Note that this dependency is an artifact of the current 2167c478bd9Sstevel@tonic-gate * kernel implementation and may change in future releases.) 2177c478bd9Sstevel@tonic-gate */ 2187c478bd9Sstevel@tonic-gate #if (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || \ 2197c478bd9Sstevel@tonic-gate defined(_KERNEL) || defined(_KMEMUSER) || \ 2207c478bd9Sstevel@tonic-gate defined(__EXTENSIONS__) 2217c478bd9Sstevel@tonic-gate #undef _LARGEFILE64_SOURCE 2227c478bd9Sstevel@tonic-gate #define _LARGEFILE64_SOURCE 1 2237c478bd9Sstevel@tonic-gate #endif 2247c478bd9Sstevel@tonic-gate #if _LARGEFILE64_SOURCE - 0 == 1 2257c478bd9Sstevel@tonic-gate #undef _LARGEFILE_SOURCE 2267c478bd9Sstevel@tonic-gate #define _LARGEFILE_SOURCE 1 2277c478bd9Sstevel@tonic-gate #endif 2287c478bd9Sstevel@tonic-gate 2297c478bd9Sstevel@tonic-gate /* 2307c478bd9Sstevel@tonic-gate * Large file compilation environment control: 2317c478bd9Sstevel@tonic-gate * 2327c478bd9Sstevel@tonic-gate * The setting of _FILE_OFFSET_BITS controls the size of various file-related 2337c478bd9Sstevel@tonic-gate * types and governs the mapping between file-related source function symbol 2347c478bd9Sstevel@tonic-gate * names and the corresponding binary entry points. 2357c478bd9Sstevel@tonic-gate * 2367c478bd9Sstevel@tonic-gate * In the 32-bit environment, the default value is 32; if not set, set it to 2377c478bd9Sstevel@tonic-gate * the default here, to simplify tests in other headers. 2387c478bd9Sstevel@tonic-gate * 2397c478bd9Sstevel@tonic-gate * In the 64-bit compilation environment, the only value allowed is 64. 2407c478bd9Sstevel@tonic-gate */ 2417c478bd9Sstevel@tonic-gate #if defined(_LP64) 2427c478bd9Sstevel@tonic-gate #ifndef _FILE_OFFSET_BITS 2437c478bd9Sstevel@tonic-gate #define _FILE_OFFSET_BITS 64 2447c478bd9Sstevel@tonic-gate #endif 2457c478bd9Sstevel@tonic-gate #if _FILE_OFFSET_BITS - 0 != 64 2467c478bd9Sstevel@tonic-gate #error "invalid _FILE_OFFSET_BITS value specified" 2477c478bd9Sstevel@tonic-gate #endif 2487c478bd9Sstevel@tonic-gate #else /* _LP64 */ 2497c478bd9Sstevel@tonic-gate #ifndef _FILE_OFFSET_BITS 2507c478bd9Sstevel@tonic-gate #define _FILE_OFFSET_BITS 32 2517c478bd9Sstevel@tonic-gate #endif 2527c478bd9Sstevel@tonic-gate #if _FILE_OFFSET_BITS - 0 != 32 && _FILE_OFFSET_BITS - 0 != 64 2537c478bd9Sstevel@tonic-gate #error "invalid _FILE_OFFSET_BITS value specified" 2547c478bd9Sstevel@tonic-gate #endif 2557c478bd9Sstevel@tonic-gate #endif /* _LP64 */ 2567c478bd9Sstevel@tonic-gate 2577c478bd9Sstevel@tonic-gate /* 2587c478bd9Sstevel@tonic-gate * Use of _XOPEN_SOURCE 2597c478bd9Sstevel@tonic-gate * 2607c478bd9Sstevel@tonic-gate * The following X/Open specifications are supported: 2617c478bd9Sstevel@tonic-gate * 2627c478bd9Sstevel@tonic-gate * X/Open Portability Guide, Issue 3 (XPG3) 2637c478bd9Sstevel@tonic-gate * X/Open CAE Specification, Issue 4 (XPG4) 2647c478bd9Sstevel@tonic-gate * X/Open CAE Specification, Issue 4, Version 2 (XPG4v2) 2657c478bd9Sstevel@tonic-gate * X/Open CAE Specification, Issue 5 (XPG5) 2667c478bd9Sstevel@tonic-gate * Open Group Technical Standard, Issue 6 (XPG6), also referred to as 2677c478bd9Sstevel@tonic-gate * IEEE Std. 1003.1-2001 and ISO/IEC 9945:2002. 2682d08521bSGarrett D'Amore * Open Group Technical Standard, Issue 7 (XPG7), also referred to as 2692d08521bSGarrett D'Amore * IEEE Std. 1003.1-2008 and ISO/IEC 9945:2009. 2707c478bd9Sstevel@tonic-gate * 2717c478bd9Sstevel@tonic-gate * XPG4v2 is also referred to as UNIX 95 (SUS or SUSv1). 2727c478bd9Sstevel@tonic-gate * XPG5 is also referred to as UNIX 98 or the Single Unix Specification, 2737c478bd9Sstevel@tonic-gate * Version 2 (SUSv2) 2747c478bd9Sstevel@tonic-gate * XPG6 is the result of a merge of the X/Open and POSIX specifications 2757c478bd9Sstevel@tonic-gate * and as such is also referred to as IEEE Std. 1003.1-2001 in 2767c478bd9Sstevel@tonic-gate * addition to UNIX 03 and SUSv3. 2772d08521bSGarrett D'Amore * XPG7 is also referred to as UNIX 08 and SUSv4. 2787c478bd9Sstevel@tonic-gate * 2797c478bd9Sstevel@tonic-gate * When writing a conforming X/Open application, as per the specification 2807c478bd9Sstevel@tonic-gate * requirements, the appropriate feature test macros must be defined at 281bbf21555SRichard Lowe * compile time. These are as follows. For more info, see standards(7). 2827c478bd9Sstevel@tonic-gate * 2837c478bd9Sstevel@tonic-gate * Feature Test Macro Specification 2847c478bd9Sstevel@tonic-gate * ------------------------------------------------ ------------- 2857c478bd9Sstevel@tonic-gate * _XOPEN_SOURCE XPG3 2867c478bd9Sstevel@tonic-gate * _XOPEN_SOURCE && _XOPEN_VERSION = 4 XPG4 2877c478bd9Sstevel@tonic-gate * _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED = 1 XPG4v2 2887c478bd9Sstevel@tonic-gate * _XOPEN_SOURCE = 500 XPG5 2897c478bd9Sstevel@tonic-gate * _XOPEN_SOURCE = 600 (or POSIX_C_SOURCE=200112L) XPG6 2902d08521bSGarrett D'Amore * _XOPEN_SOURCE = 700 (or POSIX_C_SOURCE=200809L) XPG7 2917c478bd9Sstevel@tonic-gate * 2927c478bd9Sstevel@tonic-gate * In order to simplify the guards within the headers, the following 2937c478bd9Sstevel@tonic-gate * implementation private test macros have been created. Applications 2947c478bd9Sstevel@tonic-gate * must NOT use these private test macros as unexpected results will 2957c478bd9Sstevel@tonic-gate * occur. 2967c478bd9Sstevel@tonic-gate * 2977c478bd9Sstevel@tonic-gate * Note that in general, the use of these private macros is cumulative. 2987c478bd9Sstevel@tonic-gate * For example, the use of _XPG3 with no other restrictions on the X/Open 2997c478bd9Sstevel@tonic-gate * namespace will make the symbols visible for XPG3 through XPG6 3007c478bd9Sstevel@tonic-gate * compilation environments. The use of _XPG4_2 with no other X/Open 3017c478bd9Sstevel@tonic-gate * namespace restrictions indicates that the symbols were introduced in 3027c478bd9Sstevel@tonic-gate * XPG4v2 and are therefore visible for XPG4v2 through XPG6 compilation 3037c478bd9Sstevel@tonic-gate * environments, but not for XPG3 or XPG4 compilation environments. 3047c478bd9Sstevel@tonic-gate * 3057c478bd9Sstevel@tonic-gate * _XPG3 X/Open Portability Guide, Issue 3 (XPG3) 3067c478bd9Sstevel@tonic-gate * _XPG4 X/Open CAE Specification, Issue 4 (XPG4) 3077c478bd9Sstevel@tonic-gate * _XPG4_2 X/Open CAE Specification, Issue 4, Version 2 (XPG4v2/UNIX 95/SUS) 3087c478bd9Sstevel@tonic-gate * _XPG5 X/Open CAE Specification, Issue 5 (XPG5/UNIX 98/SUSv2) 3097c478bd9Sstevel@tonic-gate * _XPG6 Open Group Technical Standard, Issue 6 (XPG6/UNIX 03/SUSv3) 3102d08521bSGarrett D'Amore * _XPG7 Open Group Technical Standard, Issue 7 (XPG7/UNIX 08/SUSv4) 3117c478bd9Sstevel@tonic-gate */ 3127c478bd9Sstevel@tonic-gate 3137c478bd9Sstevel@tonic-gate /* X/Open Portability Guide, Issue 3 */ 3147c478bd9Sstevel@tonic-gate #if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE - 0 < 500) && \ 3157c478bd9Sstevel@tonic-gate (_XOPEN_VERSION - 0 < 4) && !defined(_XOPEN_SOURCE_EXTENDED) 3167c478bd9Sstevel@tonic-gate #define _XPG3 3177c478bd9Sstevel@tonic-gate /* X/Open CAE Specification, Issue 4 */ 3187c478bd9Sstevel@tonic-gate #elif (defined(_XOPEN_SOURCE) && _XOPEN_VERSION - 0 == 4) 3197c478bd9Sstevel@tonic-gate #define _XPG4 3207c478bd9Sstevel@tonic-gate #define _XPG3 3217c478bd9Sstevel@tonic-gate /* X/Open CAE Specification, Issue 4, Version 2 */ 3227c478bd9Sstevel@tonic-gate #elif (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE_EXTENDED - 0 == 1) 3237c478bd9Sstevel@tonic-gate #define _XPG4_2 3247c478bd9Sstevel@tonic-gate #define _XPG4 3257c478bd9Sstevel@tonic-gate #define _XPG3 3267c478bd9Sstevel@tonic-gate /* X/Open CAE Specification, Issue 5 */ 3277c478bd9Sstevel@tonic-gate #elif (_XOPEN_SOURCE - 0 == 500) 3287c478bd9Sstevel@tonic-gate #define _XPG5 3297c478bd9Sstevel@tonic-gate #define _XPG4_2 3307c478bd9Sstevel@tonic-gate #define _XPG4 3317c478bd9Sstevel@tonic-gate #define _XPG3 3327c478bd9Sstevel@tonic-gate #undef _POSIX_C_SOURCE 3337c478bd9Sstevel@tonic-gate #define _POSIX_C_SOURCE 199506L 3347c478bd9Sstevel@tonic-gate /* Open Group Technical Standard , Issue 6 */ 3357c478bd9Sstevel@tonic-gate #elif (_XOPEN_SOURCE - 0 == 600) || (_POSIX_C_SOURCE - 0 == 200112L) 3367c478bd9Sstevel@tonic-gate #define _XPG6 3377c478bd9Sstevel@tonic-gate #define _XPG5 3387c478bd9Sstevel@tonic-gate #define _XPG4_2 3397c478bd9Sstevel@tonic-gate #define _XPG4 3407c478bd9Sstevel@tonic-gate #define _XPG3 3417c478bd9Sstevel@tonic-gate #undef _POSIX_C_SOURCE 3427c478bd9Sstevel@tonic-gate #define _POSIX_C_SOURCE 200112L 3437c478bd9Sstevel@tonic-gate #undef _XOPEN_SOURCE 3447c478bd9Sstevel@tonic-gate #define _XOPEN_SOURCE 600 3452d08521bSGarrett D'Amore 3462d08521bSGarrett D'Amore /* Open Group Technical Standard, Issue 7 */ 3472d08521bSGarrett D'Amore #elif (_XOPEN_SOURCE - 0 == 700) || (_POSIX_C_SOURCE - 0 == 200809L) 3482d08521bSGarrett D'Amore #define _XPG7 3492d08521bSGarrett D'Amore #define _XPG6 3502d08521bSGarrett D'Amore #define _XPG5 3512d08521bSGarrett D'Amore #define _XPG4_2 3522d08521bSGarrett D'Amore #define _XPG4 3532d08521bSGarrett D'Amore #define _XPG3 3542d08521bSGarrett D'Amore #undef _POSIX_C_SOURCE 3552d08521bSGarrett D'Amore #define _POSIX_C_SOURCE 200809L 3562d08521bSGarrett D'Amore #undef _XOPEN_SOURCE 3572d08521bSGarrett D'Amore #define _XOPEN_SOURCE 700 3587c478bd9Sstevel@tonic-gate #endif 3597c478bd9Sstevel@tonic-gate 3607c478bd9Sstevel@tonic-gate /* 3617c478bd9Sstevel@tonic-gate * _XOPEN_VERSION is defined by the X/Open specifications and is not 3627c478bd9Sstevel@tonic-gate * normally defined by the application, except in the case of an XPG4 3637c478bd9Sstevel@tonic-gate * application. On the implementation side, _XOPEN_VERSION defined with 3647c478bd9Sstevel@tonic-gate * the value of 3 indicates an XPG3 application. _XOPEN_VERSION defined 3657c478bd9Sstevel@tonic-gate * with the value of 4 indicates an XPG4 or XPG4v2 (UNIX 95) application. 3667c478bd9Sstevel@tonic-gate * _XOPEN_VERSION defined with a value of 500 indicates an XPG5 (UNIX 98) 3677c478bd9Sstevel@tonic-gate * application and with a value of 600 indicates an XPG6 (UNIX 03) 3682d08521bSGarrett D'Amore * application and with a value of 700 indicates an XPG7 (UNIX 08). 3692d08521bSGarrett D'Amore * The appropriate version is determined by the use of the 3707c478bd9Sstevel@tonic-gate * feature test macros described earlier. The value of _XOPEN_VERSION 3717c478bd9Sstevel@tonic-gate * defaults to 3 otherwise indicating support for XPG3 applications. 3727c478bd9Sstevel@tonic-gate */ 3737c478bd9Sstevel@tonic-gate #ifndef _XOPEN_VERSION 3742d08521bSGarrett D'Amore #if defined(_XPG7) 3752d08521bSGarrett D'Amore #define _XOPEN_VERSION 700 3762d08521bSGarrett D'Amore #elif defined(_XPG6) 3777c478bd9Sstevel@tonic-gate #define _XOPEN_VERSION 600 3787c478bd9Sstevel@tonic-gate #elif defined(_XPG5) 3797c478bd9Sstevel@tonic-gate #define _XOPEN_VERSION 500 3807c478bd9Sstevel@tonic-gate #elif defined(_XPG4_2) 3817c478bd9Sstevel@tonic-gate #define _XOPEN_VERSION 4 3827c478bd9Sstevel@tonic-gate #else 3837c478bd9Sstevel@tonic-gate #define _XOPEN_VERSION 3 3847c478bd9Sstevel@tonic-gate #endif 3857c478bd9Sstevel@tonic-gate #endif 3867c478bd9Sstevel@tonic-gate 3877c478bd9Sstevel@tonic-gate /* 3887c478bd9Sstevel@tonic-gate * ANSI C and ISO 9899:1990 say the type long long doesn't exist in strictly 3897c478bd9Sstevel@tonic-gate * conforming environments. ISO 9899:1999 says it does. 3907c478bd9Sstevel@tonic-gate * 3917c478bd9Sstevel@tonic-gate * The presence of _LONGLONG_TYPE says "long long exists" which is therefore 3927c478bd9Sstevel@tonic-gate * defined in all but strictly conforming environments that disallow it. 3937c478bd9Sstevel@tonic-gate */ 3947c478bd9Sstevel@tonic-gate #if !defined(_STDC_C99) && defined(_STRICT_STDC) && !defined(__GNUC__) 3957c478bd9Sstevel@tonic-gate /* 3967c478bd9Sstevel@tonic-gate * Resist attempts to force the definition of long long in this case. 3977c478bd9Sstevel@tonic-gate */ 3987c478bd9Sstevel@tonic-gate #if defined(_LONGLONG_TYPE) 3997c478bd9Sstevel@tonic-gate #error "No long long in strictly conforming ANSI C & 1990 ISO C environments" 4007c478bd9Sstevel@tonic-gate #endif 4017c478bd9Sstevel@tonic-gate #else 4027c478bd9Sstevel@tonic-gate #if !defined(_LONGLONG_TYPE) 4037c478bd9Sstevel@tonic-gate #define _LONGLONG_TYPE 4047c478bd9Sstevel@tonic-gate #endif 4057c478bd9Sstevel@tonic-gate #endif 4067c478bd9Sstevel@tonic-gate 4077c478bd9Sstevel@tonic-gate /* 4087c478bd9Sstevel@tonic-gate * The following macro defines a value for the ISO C99 restrict 4097c478bd9Sstevel@tonic-gate * keyword so that _RESTRICT_KYWD resolves to "restrict" if 41010a6478aSRichard PALO * an ISO C99 compiler is used, "__restrict" for c++ and "" (null string) 41110a6478aSRichard PALO * if any other compiler is used. This allows for the use of single 41210a6478aSRichard PALO * prototype declarations regardless of compiler version. 4137c478bd9Sstevel@tonic-gate */ 41410a6478aSRichard PALO #if (defined(__STDC__) && defined(_STDC_C99)) 41510a6478aSRichard PALO #ifdef __cplusplus 41610a6478aSRichard PALO #define _RESTRICT_KYWD __restrict 41710a6478aSRichard PALO #else 41810a6478aSRichard PALO /* 41910a6478aSRichard PALO * NOTE: The whitespace between the '#' and 'define' is significant. 42010a6478aSRichard PALO * It foils gcc's fixincludes from defining a redundant 'restrict'. 42110a6478aSRichard PALO */ 42210a6478aSRichard PALO /* CSTYLED */ 4237c478bd9Sstevel@tonic-gate # define _RESTRICT_KYWD restrict 42410a6478aSRichard PALO #endif 4257c478bd9Sstevel@tonic-gate #else 4267c478bd9Sstevel@tonic-gate #define _RESTRICT_KYWD 4277c478bd9Sstevel@tonic-gate #endif 4287c478bd9Sstevel@tonic-gate 4297c478bd9Sstevel@tonic-gate /* 430fc2512cfSRobert Mustacchi * The following macro defines a value for the ISO C11 _Noreturn 431fc2512cfSRobert Mustacchi * keyword so that _NORETURN_KYWD resolves to "_Noreturn" if 432fc2512cfSRobert Mustacchi * an ISO C11 compiler is used and "" (null string) if any other 433fc2512cfSRobert Mustacchi * compiler is used. This allows for the use of single prototype 434fc2512cfSRobert Mustacchi * declarations regardless of compiler version. 435fc2512cfSRobert Mustacchi */ 436fc2512cfSRobert Mustacchi #if (defined(__STDC__) && defined(_STDC_C11)) && !defined(__cplusplus) 437fc2512cfSRobert Mustacchi #define _NORETURN_KYWD _Noreturn 438fc2512cfSRobert Mustacchi #else 439fc2512cfSRobert Mustacchi #define _NORETURN_KYWD 440fc2512cfSRobert Mustacchi #endif 441fc2512cfSRobert Mustacchi 44200efb5e1SYuri Pankov /* ISO/IEC 9899:2011 Annex K */ 44300efb5e1SYuri Pankov #if defined(__STDC_WANT_LIB_EXT1__) 44400efb5e1SYuri Pankov #if __STDC_WANT_LIB_EXT1__ 44500efb5e1SYuri Pankov #define __EXT1_VISIBLE 1 44600efb5e1SYuri Pankov #else 44700efb5e1SYuri Pankov #define __EXT1_VISIBLE 0 44800efb5e1SYuri Pankov #endif 449acab0a4fSYuri Pankov #else 450acab0a4fSYuri Pankov #define __EXT1_VISIBLE 0 45100efb5e1SYuri Pankov #endif /* __STDC_WANT_LIB_EXT1__ */ 452fc2512cfSRobert Mustacchi 453fc2512cfSRobert Mustacchi /* 4547c478bd9Sstevel@tonic-gate * The following macro indicates header support for the ANSI C++ 4557c478bd9Sstevel@tonic-gate * standard. The ISO/IEC designation for this is ISO/IEC FDIS 14882. 4567c478bd9Sstevel@tonic-gate */ 4577c478bd9Sstevel@tonic-gate #define _ISO_CPP_14882_1998 4587c478bd9Sstevel@tonic-gate 4597c478bd9Sstevel@tonic-gate /* 4607c478bd9Sstevel@tonic-gate * The following macro indicates header support for the C99 standard, 4617c478bd9Sstevel@tonic-gate * ISO/IEC 9899:1999, Programming Languages - C. 4627c478bd9Sstevel@tonic-gate */ 4637c478bd9Sstevel@tonic-gate #define _ISO_C_9899_1999 4647c478bd9Sstevel@tonic-gate 4652b6e762cSahl /* 46600efb5e1SYuri Pankov * The following macro indicates header support for the C11 standard, 467fc2512cfSRobert Mustacchi * ISO/IEC 9899:2011, Programming Languages - C. 468fc2512cfSRobert Mustacchi */ 469fc2512cfSRobert Mustacchi #define _ISO_C_9899_2011 470fc2512cfSRobert Mustacchi 471fc2512cfSRobert Mustacchi /* 47200efb5e1SYuri Pankov * The following macro indicates header support for the C11 standard, 47300efb5e1SYuri Pankov * ISO/IEC 9899:2011 Annex K, Programming Languages - C. 47400efb5e1SYuri Pankov */ 47500efb5e1SYuri Pankov #undef __STDC_LIB_EXT1__ 47600efb5e1SYuri Pankov 47700efb5e1SYuri Pankov /* 4782b6e762cSahl * The following macro indicates header support for DTrace. The value is an 4792b6e762cSahl * integer that corresponds to the major version number for DTrace. 4802b6e762cSahl */ 4812b6e762cSahl #define _DTRACE_VERSION 1 4822b6e762cSahl 4837c478bd9Sstevel@tonic-gate #ifdef __cplusplus 4847c478bd9Sstevel@tonic-gate } 4857c478bd9Sstevel@tonic-gate #endif 4867c478bd9Sstevel@tonic-gate 4877c478bd9Sstevel@tonic-gate #endif /* _SYS_FEATURE_TESTS_H */ 488