95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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features.h
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Detects the appropriate standard that this translation unit uses.
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*******************************************************************************/
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#ifndef INCLUDE_FEATURES_H
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#define INCLUDE_FEATURES_H
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#define __sortix_libc__ 1
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/* Detect whether we are a core system library. */
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#if defined(__is_sortix_libc) || \
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defined(__is_sortix_libm) || \
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defined(__is_sortix_libpthread)
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#if !defined(__is_sortix_system_library)
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#define __is_sortix_system_library
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#endif
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#endif
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/* Detect whether we are a core system component. */
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#if defined(__is_sortix_kernel) || defined(__is_sortix_system_library)
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#if !defined(__is_sortix_system_component)
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#define __is_sortix_system_component
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#endif
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#endif
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/* Support macro to ease testing the compiler version. */
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#define __GCC_PREREQ(gcc_major, gcc_minor) \
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(((gcc_major) == __GNUC__ && (gcc_minor) >= __GNUC_MINOR__) || \
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((gcc_major) < __GNUC__))
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/* Sortix system components implicitly use the native API. */
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#if defined(__is_sortix_system_component)
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#define _SORTIX_SOURCE 1
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#endif
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/* By default, assume the source is compiled using the native API. */
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#if !defined(_SORTIX_SOURCE) && \
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!defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) && \
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!defined(_BSD_SOURCE) && \
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!defined(_SVID_SOURCE) && \
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!defined(_XOPEN_SOURCE) && !defined(_XOPEN_SOURCE_EXTENDED) && \
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!defined(_GNU_SOURCE) && \
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1
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#define _SORTIX_SOURCE 1
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#endif
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/* Whether to override some "standard" functions with Sortix alternatives. */
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#if !defined(__SORTIX_STDLIB_REDIRECTS)
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#if defined(_SORTIX_SOURCE)
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#define __SORTIX_STDLIB_REDIRECTS 1
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#else
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#define __SORTIX_STDLIB_REDIRECTS 0
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#endif
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#endif
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/* Provide the restrict keyword when building system components. */
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#if defined(__is_sortix_system_component) && !defined(__want_restrict)
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#define __want_restrict 1
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#endif
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/* Detect whether the restrict keyword is available. */
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#if __STDC_VERSION__ >= 199901L
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#define __HAS_RESTRICT 1
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#endif
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/* Provide the full <stdint.h> in all system components. */
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#if defined(__is_sortix_system_component)
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#undef __STDC_CONSTANT_MACROS
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#undef __STDC_LIMIT_MACROS
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#define __STDC_CONSTANT_MACROS
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#define __STDC_LIMIT_MACROS
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#endif
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#endif
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