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6c5987811c
This patch provides a new implementation of the optional API support defined in asterisk/optional_api.h; this new version provides solves compatibility issues with the use of linker version scripts for suppressing global symbols. In addition, there is now a functional (and tested!) implementation for Mac OS/X, so module writers no longer need to use special tests before calling optional API functions. All future implementations must provide these same semantics, so that module writers can rely on them. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@200519 65c4cc65-6c06-0410-ace0-fbb531ad65f3
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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* \brief Compiler-specific macros and other items
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*/
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#ifndef _ASTERISK_COMPILER_H
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#define _ASTERISK_COMPILER_H
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#ifdef HAVE_ATTRIBUTE_always_inline
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#define force_inline __attribute__((always_inline)) inline
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#else
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#define force_inline inline
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#endif
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#ifdef HAVE_ATTRIBUTE_pure
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#define attribute_pure __attribute__((pure))
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#else
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#define attribute_pure
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#endif
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#ifdef HAVE_ATTRIBUTE_const
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#define attribute_const __attribute__((const))
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#else
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#define attribute_const
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#endif
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#ifdef HAVE_ATTRIBUTE_unused
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#define attribute_unused __attribute__((unused))
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#else
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#define attribute_unused
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#endif
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#ifdef HAVE_ATTRIBUTE_malloc
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#define attribute_malloc __attribute__((malloc))
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#else
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#define attribute_malloc
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#endif
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#ifdef HAVE_ATTRIBUTE_sentinel
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#define attribute_sentinel __attribute__((sentinel))
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#else
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#define attribute_sentinel
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#endif
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#ifdef HAVE_ATTRIBUTE_warn_unused_result
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#define attribute_warn_unused_result __attribute__((warn_unused_result))
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#else
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#define attribute_warn_unused_result
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#endif
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/* Some older version of GNU gcc (3.3.5 on OpenBSD 4.3 for example) dont like 'NULL' as sentinel */
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#define SENTINEL ((char *)NULL)
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#endif /* _ASTERISK_COMPILER_H */
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