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haiku/headers/compatibility/bsd/features.h

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Add a features.h to auto enable _DEFAULT_SOURCE Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2019-07-20 13:02:02 +03:00
/*
features.h: Clean up ISOC11 definitions. * Do not define it merely when _GNU_SOURCE is defined, that is not needed. * Scale back __cplusplus check to 201103L, just like the BSDs do.
2021-11-16 23:11:44 +03:00
* Copyright 2019-2021, Haiku, Inc. All rights reserved.
Add a features.h to auto enable _DEFAULT_SOURCE Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2019-07-20 13:02:02 +03:00
* Distributed under the terms of the MIT License.
*/
#ifndef _FEATURES_H
#define _FEATURES_H
features.h: Define _DEFAULT_SOURCE when _GNU_SOURCE is defined. As suggested by PulkoMandy. This was done before my commits yesterday, but those just reverted patches that had only been in since May, so it's not clear how much this is actually needed. Nonetheless it seems like the more correct thing to do.
2021-11-17 21:55:50 +03:00
#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE) \
Add a features.h to auto enable _DEFAULT_SOURCE Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2019-07-20 13:02:02 +03:00
|| (!defined(__STRICT_ANSI__) && !defined(_POSIX_C_SOURCE))
features.h: undef before define Change-Id: Iba98e3a8352801345acefe963917471992f70281 Reviewed-on: https://review.haiku-os.org/c/haiku/+/3606 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
2021-01-04 20:52:20 +03:00
#undef _DEFAULT_SOURCE
Add a features.h to auto enable _DEFAULT_SOURCE Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2019-07-20 13:02:02 +03:00
#define _DEFAULT_SOURCE
#endif
features.h: Clean up ISOC11 definitions. * Do not define it merely when _GNU_SOURCE is defined, that is not needed. * Scale back __cplusplus check to 201103L, just like the BSDs do.
2021-11-16 23:11:44 +03:00
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \
|| (defined(__cplusplus) && __cplusplus >= 201103L)
features.h: undef before define Change-Id: Iba98e3a8352801345acefe963917471992f70281 Reviewed-on: https://review.haiku-os.org/c/haiku/+/3606 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
2021-01-04 20:52:20 +03:00
#undef _ISOC11_SOURCE
C11: add aligned_alloc() Change-Id: If648c0e27ed946874d393e8e33a4548b70c8ecdb Reviewed-on: https://review.haiku-os.org/c/haiku/+/3377 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
2020-10-31 22:34:20 +03:00
#define _ISOC11_SOURCE
#endif
Add a features.h to auto enable _DEFAULT_SOURCE Unless __STRICT_ANSI__ is defined (as it is when running the compiler in --std=c89 or --std=c99, but not when running it without any specific args), we can enable these by default and behave like most other systems. I don't know why no one has done this yet despite suggesting it multiple times and people prefer to #define _BSD_SOURCE manually everywhere. Remove all places in our Jamfiles and sources where it had been defined. _DEFAULT_SOURCE is now enabled by default for all sources of Haiku, since we let the compiler use GNU extensions (no strict C standard specified on command line) Use _DEFAULT_SOURCE as the define name to match current versions of glibc. Enable it if _BSD_SOURCE is #defined in compiler flags, for backward compatibility. Change-Id: I6db04da5f6db437723cdfba3478f5094a69d7727 Reviewed-on: https://review.haiku-os.org/c/1633 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2019-07-20 13:02:02 +03:00
#endif // _FEATURES_H
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