1/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software
14 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
15
16/*
17 Helper macros used for setting different __attributes__
18 on functions in a portable fashion
19*/
20
21#ifndef _my_attribute_h
22#define _my_attribute_h
23
24#if defined(__GNUC__)
25# ifndef GCC_VERSION
26# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
27# endif
28#endif
29
30/*
31 Disable __attribute__() on gcc < 2.7, g++ < 3.4, and non-gcc compilers.
32 Some forms of __attribute__ are actually supported in earlier versions of
33 g++, but we just disable them all because we only use them to generate
34 compilation warnings.
35*/
36#ifndef __attribute__
37# if !defined(__GNUC__) && !defined(__clang__)
38# define __attribute__(A)
39# elif defined(__GNUC__)
40# ifndef GCC_VERSION
41# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
42# endif
43# if GCC_VERSION < 2008
44# define __attribute__(A)
45# elif defined(__cplusplus) && GCC_VERSION < 3004
46# define __attribute__(A)
47# endif
48# endif
49#endif
50
51/*
52 __attribute__((format(...))) is only supported in gcc >= 2.8 and g++ >= 3.4
53 But that's already covered by the __attribute__ tests above, so this is
54 just a convenience macro.
55*/
56#ifndef ATTRIBUTE_FORMAT
57# define ATTRIBUTE_FORMAT(style, m, n) __attribute__((format(style, m, n)))
58#endif
59
60/*
61
62 __attribute__((format(...))) on a function pointer is not supported
63 until gcc 3.1
64*/
65#ifndef ATTRIBUTE_FORMAT_FPTR
66# if (GCC_VERSION >= 3001)
67# define ATTRIBUTE_FORMAT_FPTR(style, m, n) ATTRIBUTE_FORMAT(style, m, n)
68# else
69# define ATTRIBUTE_FORMAT_FPTR(style, m, n)
70# endif /* GNUC >= 3.1 */
71#endif
72
73
74#endif
75