imported gcc.h from mpd

gcc.h contains a useful set of macros for setting attributes.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/gcc.h b/src/gcc.h
new file mode 100644
index 000000000..7492e6cad
--- /dev/null
+++ b/src/gcc.h
@@ -0,0 +1,69 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef MPD_GCC_H
+#define MPD_GCC_H
+
+/* this allows us to take advantage of special gcc features while still
+ * allowing other compilers to compile:
+ *
+ * example taken from: http://rlove.org/log/2005102601
+ */
+
+#if defined(__GNUC__) && (__GNUC__ >= 3)
+#  define mpd_const		__attribute__ ((const))
+#  define mpd_deprecated	__attribute__ ((deprecated))
+#  define mpd_malloc		__attribute__ ((malloc))
+#  define mpd_must_check	__attribute__ ((warn_unused_result))
+#  define mpd_noreturn		__attribute__ ((noreturn))
+#  define mpd_packed		__attribute__ ((packed))
+/* these are very useful for type checking */
+#  define mpd_printf		__attribute__ ((format(printf,1,2)))
+#  define mpd_fprintf		__attribute__ ((format(printf,2,3)))
+#  define mpd_fprintf_		__attribute__ ((format(printf,3,4)))
+#  define mpd_fprintf__		__attribute__ ((format(printf,4,5)))
+#  define mpd_pure		__attribute__ ((pure))
+#  define mpd_scanf		__attribute__ ((format(scanf,1,2)))
+#  define mpd_unused		__attribute__ ((unused))
+#  define mpd_used		__attribute__ ((used))
+/* #  define inline	inline __attribute__ ((always_inline)) */
+#  define mpd_noinline		__attribute__ ((noinline))
+#  define mpd_likely(x)		__builtin_expect (!!(x), 1)
+#  define mpd_unlikely(x)	__builtin_expect (!!(x), 0)
+#else
+#  define mpd_const
+#  define mpd_deprecated
+#  define mpd_malloc
+#  define mpd_must_check
+#  define mpd_noreturn
+#  define mpd_packed
+#  define mpd_printf
+#  define mpd_fprintf
+#  define mpd_fprintf_
+#  define mpd_fprintf__
+#  define mpd_pure
+#  define mpd_scanf
+#  define mpd_unused
+#  define mpd_used
+/* #  define inline */
+#  define mpd_noinline
+#  define mpd_likely(x)		(x)
+#  define mpd_unlikely(x)	(x)
+#endif
+
+#endif /* MPD_GCC_H */