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Diffstat (limited to 'includes/cdefs.h')
| -rw-r--r-- | includes/cdefs.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/includes/cdefs.h b/includes/cdefs.h new file mode 100644 index 0000000..eab1c4b --- /dev/null +++ b/includes/cdefs.h @@ -0,0 +1,70 @@ +/* cdefs.h + + Standard C definitions... */ + +/* + * Copyright (c) 2012 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 2004,2009,2011 by Internet Systems Consortium, Inc. ("ISC") + * Copyright (c) 1996-2003 by Internet Software Consortium + * Copyright (c) 1995 RadioMail Corporation. All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT + * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Internet Systems Consortium, Inc. + * 950 Charter Street + * Redwood City, CA 94063 + * <info@isc.org> + * https://www.isc.org/ + * + * This software was written for RadioMail Corporation by Ted Lemon + * under a contract with Vixie Enterprises. Further modifications have + * been made for Internet Systems Consortium under a contract + * with Vixie Laboratories. + */ + +#if !defined (__ISC_DHCP_CDEFS_H__) +#define __ISC_DHCP_CDEFS_H__ +/* Delete attributes if not gcc or not the right version of gcc. */ +#if !defined(__GNUC__) || __GNUC__ < 2 || \ + (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || defined (darwin) +#define __attribute__(x) +#endif + +/* The following macro handles the case of unwanted return values. In + * GCC one can specify an attribute for a function to generate a warning + * if the return value of the function is ignored and one can't dispose of + * the warning by the use of void. In conjunction with the use of -Werror + * these warnings prohibit the compilation of the package. This macro + * allows us to assign the return value to a variable and then ignore it. + * + * __attribute__((unused)) is added for avoiding another warning about set, + * but unused variable. This is produced by unused-but-set-variable switch + * that is enabled by default in gcc 4.6. + */ +#if !defined(__GNUC__) || (__GNUC__ < 4) +#define IGNORE_RET(x) (void) x +#else +#define IGNORE_RET(x) \ + do { \ + int __attribute__((unused)) ignore_return ;\ + ignore_return = x; \ + } while (0) +#endif + +/* This macro is defined to avoid unused-but-set-variable warning + * that is enabled in gcc 4.6 + */ + +#define IGNORE_UNUSED(x) { x = x; } + +#endif /* __ISC_DHCP_CDEFS_H__ */ |