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d7837182 TL |
1 | /* cdefs.h |
2 | ||
3 | Standard C definitions... */ | |
4 | ||
5 | /* | |
6 | * Copyright (c) 1995 RadioMail Corporation. All rights reserved. | |
fb30f3fc | 7 | * Copyright (c) 2011 by Internet Systems Consortium, Inc. ("ISC") |
ae566556 | 8 | * Copyright (c) 2004,2009 by Internet Systems Consortium, Inc. ("ISC") |
98311e4b | 9 | * Copyright (c) 1996-2003 by Internet Software Consortium |
d7837182 | 10 | * |
98311e4b DH |
11 | * Permission to use, copy, modify, and distribute this software for any |
12 | * purpose with or without fee is hereby granted, provided that the above | |
13 | * copyright notice and this permission notice appear in all copies. | |
d7837182 | 14 | * |
98311e4b DH |
15 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
16 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
17 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR | |
18 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
19 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
20 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
21 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
d7837182 | 22 | * |
98311e4b DH |
23 | * Internet Systems Consortium, Inc. |
24 | * 950 Charter Street | |
25 | * Redwood City, CA 94063 | |
26 | * <info@isc.org> | |
2c85ac9b | 27 | * https://www.isc.org/ |
d7837182 TL |
28 | * |
29 | * This software was written for RadioMail Corporation by Ted Lemon | |
86461900 | 30 | * under a contract with Vixie Enterprises. Further modifications have |
98311e4b | 31 | * been made for Internet Systems Consortium under a contract |
86461900 | 32 | * with Vixie Laboratories. |
d7837182 TL |
33 | */ |
34 | ||
bfc3d448 TL |
35 | #if !defined (__ISC_DHCP_CDEFS_H__) |
36 | #define __ISC_DHCP_CDEFS_H__ | |
ab58ff49 TL |
37 | /* Delete attributes if not gcc or not the right version of gcc. */ |
38 | #if !defined(__GNUC__) || __GNUC__ < 2 || \ | |
d758ad8c | 39 | (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || defined (darwin) |
ab58ff49 TL |
40 | #define __attribute__(x) |
41 | #endif | |
42 | ||
ae566556 SR |
43 | /* The following macro handles the case of unwanted return values. In |
44 | * GCC one can specify an attribute for a function to generate a warning | |
45 | * if the return value of the function is ignored and one can't dispose of | |
46 | * the warning by the use of void. In conjunction with the use of -Werror | |
47 | * these warnings prohibit the compilation of the package. This macro | |
48 | * allows us to assign the return value to a variable and then ignore it. | |
49 | */ | |
fb30f3fc | 50 | #if !defined(__GNUC__) || (__GNUC__ < 4) |
ae566556 SR |
51 | #define IGNORE_RET(x) (void) x |
52 | #else | |
53 | #define IGNORE_RET(x) \ | |
54 | do { \ | |
55 | int ignore_return; \ | |
56 | ignore_return = x; \ | |
57 | } while (0) | |
58 | #endif | |
59 | ||
bfc3d448 | 60 | #endif /* __ISC_DHCP_CDEFS_H__ */ |