1 #ifndef foogccmacrohfoo 2 #define foogccmacrohfoo 3 4 /*** 5 This file is part of avahi. 6 7 avahi is free software; you can redistribute it and/or modify it 8 under the terms of the GNU Lesser General Public License as 9 published by the Free Software Foundation; either version 2.1 of the 10 License, or (at your option) any later version. 11 12 avahi is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General 15 Public License for more details. 16 17 You should have received a copy of the GNU Lesser General Public 18 License along with avahi; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 20 USA. 21 ***/ 22 23 /** \file gccmacro.h Defines some macros for GCC extensions */ 24 25 #include <avahi-common/cdecl.h> 26 27 AVAHI_C_DECL_BEGIN 28 29 #if defined(__GNUC__) && (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3) 30 #define AVAHI_GCC_ALLOC_SIZE(x) __attribute__ ((__alloc_size__(x))) 31 #define AVAHI_GCC_ALLOC_SIZE2(x,y) __attribute__ ((__alloc_size__(x,y))) 32 #else 33 /** Macro for usage of GCC's alloc_size attribute */ 34 #define AVAHI_GCC_ALLOC_SIZE(x) 35 #define AVAHI_GCC_ALLOC_SIZE2(x,y) 36 #endif 37 38 #if defined(__GNUC__) && (__GNUC__ >= 4) 39 #define AVAHI_GCC_SENTINEL __attribute__ ((sentinel)) 40 #else 41 /** Macro for usage of GCC's sentinel compilation warnings */ 42 #define AVAHI_GCC_SENTINEL 43 #endif 44 45 #ifdef __GNUC__ 46 #define AVAHI_GCC_PRINTF_ATTR(a,b) __attribute__ ((format (printf, a, b))) 47 #else 48 /** Macro for usage of GCC's printf compilation warnings */ 49 #define AVAHI_GCC_PRINTF_ATTR(a,b) 50 #endif 51 52 /** Same as AVAHI_GCC_PRINTF_ATTR but hard coded to arguments 1 and 2 */ 53 #define AVAHI_GCC_PRINTF_ATTR12 AVAHI_GCC_PRINTF_ATTR(1,2) 54 55 /** Same as AVAHI_GCC_PRINTF_ATTR but hard coded to arguments 2 and 3 */ 56 #define AVAHI_GCC_PRINTF_ATTR23 AVAHI_GCC_PRINTF_ATTR(2,3) 57 58 #ifdef __GNUC__ 59 #define AVAHI_GCC_NORETURN __attribute__((noreturn)) 60 #else 61 /** Macro for no-return functions */ 62 #define AVAHI_GCC_NORETURN 63 #endif 64 65 #ifdef __GNUC__ 66 #define AVAHI_GCC_UNUSED __attribute__ ((unused)) 67 #else 68 /** Macro for not used parameter */ 69 #define AVAHI_GCC_UNUSED 70 #endif 71 72 AVAHI_C_DECL_END 73 74 #endif 75