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/* cdefs.h
Standard C definitions... */
/*
* Copyright (c) 2011 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 2004,2009 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.
*/
#if !defined(__GNUC__) || (__GNUC__ < 4)
#define IGNORE_RET(x) (void) x
#else
#define IGNORE_RET(x) \
do { \
int ignore_return; \
ignore_return = x; \
} while (0)
#endif
#endif /* __ISC_DHCP_CDEFS_H__ */
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