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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
/*
* Copyright 2019 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _FEATURES_H
#define _FEATURES_H
#if defined(_BSD_SOURCE) \
|| (!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: enable ISOC11 definitions for _GNU_SOURCE and C++17 this is needed for GCC to build after the aligned_alloc introduction Change-Id: Ieae32a050cc000561107c4a07cf10c912a196152 Reviewed-on: https://review.haiku-os.org/c/haiku/+/3896 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2021-05-02 14:07:42 +03:00
#if defined(_GNU_SOURCE)
#undef _ISOC11_SOURCE
#define _ISOC11_SOURCE
#undef _DEFAULT_SOURCE
#define _DEFAULT_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
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
#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
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
features.h: enable ISOC11 definitions for _GNU_SOURCE and C++17 this is needed for GCC to build after the aligned_alloc introduction Change-Id: Ieae32a050cc000561107c4a07cf10c912a196152 Reviewed-on: https://review.haiku-os.org/c/haiku/+/3896 Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2021-05-02 14:07:42 +03:00
#if defined(__cplusplus) && __cplusplus >= 201703L
#undef _ISOC11_SOURCE
#define _ISOC11_SOURCE
#endif
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
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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