1 /* @(#)ccomdefs.h 1.12 11/07/21 Copyright 2000-2011 J. Schilling */ 2 /* 3 * Various compiler dependant macros. 4 * 5 * Copyright (c) 2000-2011 J. Schilling 6 */ 7 /* 8 * The contents of this file are subject to the terms of the 9 * Common Development and Distribution License, Version 1.0 only 10 * (the "License"). You may not use this file except in compliance 11 * with the License. 12 * 13 * See the file CDDL.Schily.txt in this distribution for details. 14 * 15 * When distributing Covered Code, include this CDDL HEADER in each 16 * file and include the License file CDDL.Schily.txt from this distribution. 17 */ 18 19 #ifndef _SCHILY_CCOMDEFS_H 20 #define _SCHILY_CCOMDEFS_H 21 22 #ifndef _SCHILY_MCONFIG_H 23 #include <schily/mconfig.h> 24 #endif 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif 29 30 /* 31 * Compiler-dependent macros to declare that functions take printf-like 32 * or scanf-like arguments. They are defined to nothing for versions of gcc 33 * that are not known to support the features properly (old versions of gcc-2 34 * didn't permit keeping the keywords out of the application namespace). 35 */ 36 #if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || \ 37 defined(NO_PRINTFLIKE) 38 39 #define __printflike__(fmtarg, firstvararg) 40 #define __printf0like__(fmtarg, firstvararg) 41 #define __scanflike__(fmtarg, firstvararg) 42 43 #else /* We found GCC that supports __attribute__ */ 44 45 #define __printflike__(fmtarg, firstvararg) \ 46 __attribute__((__format__(__printf__, fmtarg, firstvararg))) 47 #define __printf0like__(fmtarg, firstvararg) \ 48 __attribute__((__format__(__printf0__, fmtarg, firstvararg))) 49 50 /* 51 * FreeBSD GCC implements printf0 that allows the format string to 52 * be a NULL pointer. 53 */ 54 #if __FreeBSD_cc_version < 300001 55 #undef __printf0like__ 56 #define __printf0like__ __printflike__ 57 #endif 58 59 #define __scanflike__(fmtarg, firstvararg) \ 60 __attribute__((__format__(__scanf__, fmtarg, firstvararg))) 61 62 #endif /* GNUC */ 63 64 #if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 2 65 /* GCC-3.3 or more */ 66 67 /* CSTYLED */ 68 #define UConst __attribute__ ((__used__)) const 69 70 #else /* less than GNUC 3.3 */ 71 72 #define UConst const 73 74 #endif /* less than GNUC 3.3 */ 75 76 #ifdef __PCC__ 77 /* 78 * Hack until pcc supports __attribute__ ((__used__)) 79 */ 80 #ifdef UConst 81 #undef UConst 82 #define UConst const 83 #endif 84 #endif 85 86 #ifdef __cplusplus 87 } 88 #endif 89 90 #endif /* _SCHILY_CCOMDEFS_H */ 91