lib/libldns/ldns/common.h

   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         1
  23 #define LDNS_BUILD_CONFIG_HAVE_INTTYPES_H  1
  24 #define LDNS_BUILD_CONFIG_HAVE_ATTR_FORMAT 1
  25 #define LDNS_BUILD_CONFIG_HAVE_ATTR_UNUSED 1
  26 #define LDNS_BUILD_CONFIG_HAVE_SOCKLEN_T   1
  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
  42 typedef 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
  70 typedef int socklen_t;
  71 #endif
  72
  73 #endif /* LDNS_COMMON_H */