common.h.in revision 246854 
1/**
2 * \file common.h
3 *
4 * Common definitions for LDNS
5 */
6
7/**
8 * a Net::DNS like library for C
9 *
10 * (c) NLnet Labs, 2004-2006
11 *
12 * See the file LICENSE for the license
13 */
14
15#ifndef LDNS_COMMON_H
16#define LDNS_COMMON_H
17
18/*
19 * The build configuration that is used in the distributed headers,
20 * as detected and determined by the auto configure script.
21 */
22#define LDNS_BUILD_CONFIG_HAVE_SSL         @ldns_build_config_have_ssl@
23#define LDNS_BUILD_CONFIG_HAVE_INTTYPES_H  @ldns_build_config_have_inttypes_h@
24#define LDNS_BUILD_CONFIG_HAVE_ATTR_FORMAT @ldns_build_config_have_attr_format@
25#define LDNS_BUILD_CONFIG_HAVE_ATTR_UNUSED @ldns_build_config_have_attr_unused@
26#define LDNS_BUILD_CONFIG_HAVE_SOCKLEN_T   @ldns_build_config_have_socklen_t@
27
28/*
29 * HAVE_STDBOOL_H is not available when distributed as a library, but no build 
30 * configuration variables may be used (like those above) because the header
31 * is sometimes only available when using special compiler flags to enable the
32 * c99 environment. Because we cannot force the usage of this flag, we have to
33 * provide a default type. Below what is suggested by the autoconf manual.
34 */
35/*@ignore@*/
36/* splint barfs on this construct */
37#ifdef HAVE_STDBOOL_H
38# include <stdbool.h>
39#else
40# ifndef HAVE__BOOL
41#  ifdef __cplusplus
42typedef bool _Bool;
43#  else
44#   define _Bool signed char
45#  endif
46# endif
47# define bool _Bool
48# define false 0
49# define true 1
50# define __bool_true_false_are_defined 1
51#endif
52/*@end@*/
53
54#if LDNS_BUILD_CONFIG_HAVE_ATTR_FORMAT
55#define ATTR_FORMAT(archetype, string_index, first_to_check) \
56    __attribute__ ((format (archetype, string_index, first_to_check)))
57#else /* !LDNS_BUILD_CONFIG_HAVE_ATTR_FORMAT */
58#define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
59#endif /* !LDNS_BUILD_CONFIG_HAVE_ATTR_FORMAT */
60
61#if defined(__cplusplus)
62#define ATTR_UNUSED(x)
63#elif LDNS_BUILD_CONFIG_HAVE_ATTR_UNUSED
64#define ATTR_UNUSED(x)  x __attribute__((unused))
65#else /* !LDNS_BUILD_CONFIG_HAVE_ATTR_UNUSED */
66#define ATTR_UNUSED(x)  x
67#endif /* !LDNS_BUILD_CONFIG_HAVE_ATTR_UNUSED */
68
69#if !LDNS_BUILD_CONFIG_HAVE_SOCKLEN_T
70typedef int socklen_t;
71#endif
72
73#endif /* LDNS_COMMON_H */
74