1 /* 2 * Copyright (c) 2015 Dmitry V. Levin <ldv (at) altlinux.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef GCC_COMPAT_H_ 29 #define GCC_COMPAT_H_ 30 31 #if defined __GNUC__ && defined __GNUC_MINOR__ 32 # define GNUC_PREREQ(maj, min) \ 33 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 34 #else 35 # define __attribute__(x) /* empty */ 36 # define GNUC_PREREQ(maj, min) 0 37 #endif 38 39 #if GNUC_PREREQ(2, 5) 40 # define ATTRIBUTE_NORETURN __attribute__((__noreturn__)) 41 #else 42 # define ATTRIBUTE_NORETURN /* empty */ 43 #endif 44 45 #if GNUC_PREREQ(2, 7) 46 # define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args)) 47 # define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg))) 48 # define ATTRIBUTE_PACKED __attribute__((__packed__)) 49 #else 50 # define ATTRIBUTE_FORMAT(args) /* empty */ 51 # define ATTRIBUTE_ALIGNED(arg) /* empty */ 52 # define ATTRIBUTE_PACKED /* empty */ 53 #endif 54 55 #if GNUC_PREREQ(3, 0) 56 # define ATTRIBUTE_MALLOC __attribute__((__malloc__)) 57 #else 58 # define ATTRIBUTE_MALLOC /* empty */ 59 #endif 60 61 #if GNUC_PREREQ(3, 1) 62 # define ATTRIBUTE_NOINLINE __attribute__((__noinline__)) 63 #else 64 # define ATTRIBUTE_NOINLINE /* empty */ 65 #endif 66 67 #if GNUC_PREREQ(4, 3) 68 # define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args)) 69 #else 70 # define ATTRIBUTE_ALLOC_SIZE(args) /* empty */ 71 #endif 72 73 #endif 74
