2009-03-13 18:43:16 +01:00
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/*
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2011-01-29 10:13:54 +01:00
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* Copyright (C) 2003-2011 The Music Player Daemon Project
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2009-03-13 18:43:16 +01:00
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* http://www.musicpd.org
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2006-07-31 05:37:34 +02:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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2009-03-13 18:43:16 +01:00
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2006-07-31 05:37:34 +02:00
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*/
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2006-07-30 05:43:38 +02:00
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#ifndef MPD_GCC_H
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#define MPD_GCC_H
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2011-09-15 09:22:48 +02:00
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#define GCC_CHECK_VERSION(major, minor) \
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(defined(__GNUC__) && \
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(__GNUC__ > (major) || \
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(__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
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2006-07-30 05:43:38 +02:00
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/* this allows us to take advantage of special gcc features while still
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* allowing other compilers to compile:
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*
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* example taken from: http://rlove.org/log/2005102601
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*/
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2011-09-15 09:22:48 +02:00
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#if GCC_CHECK_VERSION(3,0)
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2012-08-02 18:15:49 +02:00
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# define gcc_const __attribute__((const))
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# define gcc_pure __attribute__((pure))
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# define gcc_malloc __attribute__((malloc))
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2011-09-13 21:37:33 +02:00
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# define gcc_must_check __attribute__ ((warn_unused_result))
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# define gcc_packed __attribute__ ((packed))
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2006-07-30 05:43:38 +02:00
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/* these are very useful for type checking */
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2011-09-13 21:37:33 +02:00
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# define gcc_printf __attribute__ ((format(printf,1,2)))
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# define gcc_fprintf __attribute__ ((format(printf,2,3)))
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# define gcc_fprintf_ __attribute__ ((format(printf,3,4)))
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# define gcc_fprintf__ __attribute__ ((format(printf,4,5)))
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# define gcc_scanf __attribute__ ((format(scanf,1,2)))
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# define gcc_used __attribute__ ((used))
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2012-08-02 18:15:49 +02:00
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# define gcc_unused __attribute__((unused))
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# define gcc_warn_unused_result __attribute__((warn_unused_result))
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2006-07-30 05:43:38 +02:00
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/* # define inline inline __attribute__ ((always_inline)) */
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2011-09-13 21:37:33 +02:00
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# define gcc_noinline __attribute__ ((noinline))
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2011-09-13 21:33:34 +02:00
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# define gcc_nonnull(...) __attribute__((nonnull(__VA_ARGS__)))
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# define gcc_nonnull_all __attribute__((nonnull))
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2012-08-02 18:15:49 +02:00
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# define gcc_likely(x) __builtin_expect (!!(x), 1)
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# define gcc_unlikely(x) __builtin_expect (!!(x), 0)
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2006-07-30 05:43:38 +02:00
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#else
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2012-08-02 18:15:49 +02:00
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# define gcc_unused
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# define gcc_const
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# define gcc_pure
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# define gcc_malloc
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2011-09-13 21:37:33 +02:00
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# define gcc_must_check
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# define gcc_packed
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# define gcc_printf
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# define gcc_fprintf
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# define gcc_fprintf_
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# define gcc_fprintf__
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# define gcc_scanf
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# define gcc_used
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2012-08-02 18:15:49 +02:00
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# define gcc_unused
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# define gcc_warn_unused_result
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2006-07-30 05:43:38 +02:00
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/* # define inline */
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2011-09-13 21:37:33 +02:00
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# define gcc_noinline
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2011-09-13 21:33:34 +02:00
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# define gcc_nonnull(...)
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# define gcc_nonnull_all
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2012-08-02 18:15:49 +02:00
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# define gcc_likely(x) (x)
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# define gcc_unlikely(x) (x)
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2006-07-30 05:43:38 +02:00
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#endif
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2012-08-01 09:41:26 +02:00
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#ifdef __cplusplus
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2012-08-01 09:44:45 +02:00
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#if !defined(__clang__) && defined(__GNUC__) && !GCC_CHECK_VERSION(4,5)
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#error Your gcc version is too old. MPD requires gcc 4.5 or newer.
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#endif
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2012-08-01 09:41:26 +02:00
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/* support for C++11 "override" was added in gcc 4.7 */
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#if !defined(__clang__) && defined(__GNUC__) && !GCC_CHECK_VERSION(4,7)
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#define override
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#endif
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#endif
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2006-07-30 05:43:38 +02:00
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#endif /* MPD_GCC_H */
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