third_party/resolv_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 import os
   4 from waflib import Logs
   5
   6 VERSION="1.1.8"
   7
   8 def configure(conf):
   9     if conf.CHECK_RESOLV_WRAPPER():
  10         conf.DEFINE('USING_SYSTEM_RESOLV_WRAPPER', 1)
  11         libresolv_wrapper_so_path = 'libresolv_wrapper.so'
  12     else:
  13
  14         if conf.CONFIG_SET("HAVE___THREAD"):
  15             conf.DEFINE("HAVE_GCC_THREAD_LOCAL_STORAGE", 1)
  16
  17         # check HAVE_ATTRIBUTE_PRINTF_FORMAT
  18         conf.CHECK_CODE('''
  19             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  20
  21             int main(void) {
  22                 return 0;
  23             }
  24             ''',
  25             'HAVE_ATTRIBUTE_PRINTF_FORMAT',
  26             addmain=False,
  27             strict=True,
  28             msg='Checking for printf format validation support')
  29
  30         conf.CHECK_HEADERS('resolv.h')
  31
  32         conf.CHECK_STRUCTURE_MEMBER('struct __res_state',
  33                                     '_u._ext.nsaddrs',
  34                                     headers='sys/socket.h netinet/in.h resolv.h',
  35                                     define='HAVE_RES_STATE_U_EXT_NSADDRS')
  36         conf.CHECK_STRUCTURE_MEMBER('union res_sockaddr_union',
  37                                     'sin',
  38                                     headers='sys/socket.h netinet/in.h resolv.h',
  39                                     define='HAVE_RES_SOCKADDR_UNION_SIN')
  40         conf.CHECK_STRUCTURE_MEMBER('union res_sockaddr_union',
  41                                     'sin6',
  42                                     headers='sys/socket.h netinet/in.h resolv.h',
  43                                     define='HAVE_RES_SOCKADDR_UNION_SIN6')
  44
  45         conf.CHECK_FUNCS_IN('res_ninit', 'resolv')
  46         if conf.CONFIG_SET('HAVE_RES_NINIT'):
  47             conf.DEFINE('HAVE_RES_NINIT_IN_LIBRESOLV', 1)
  48
  49         conf.CHECK_FUNCS_IN('res_nclose', 'resolv')
  50         if conf.CONFIG_SET('HAVE_RES_NCLOSE'):
  51             conf.DEFINE('HAVE_RES_NCLOSE_IN_LIBRESOLV', 1)
  52
  53         # If we find res_nquery in libc, we can't do resolv.conf redirect
  54         conf.CHECK_FUNCS('res_nquery __res_nquery')
  55         if (conf.CONFIG_SET('HAVE_RES_NQUERY')
  56                 or conf.CONFIG_SET('HAVE___RES_NQUERY')):
  57             Logs.warn("Detection for resolv_wrapper: "
  58                       "Only dns faking will be available")
  59         else:
  60             if conf.CHECK_FUNCS('res_nquery', lib='resolv'):
  61                 conf.DEFINE('HAVE_RESOLV_CONF_SUPPORT', 1)
  62             if conf.CHECK_FUNCS('__res_nquery', lib='resolv'):
  63                 conf.DEFINE('HAVE_RESOLV_CONF_SUPPORT', 1)
  64
  65         conf.CHECK_FUNCS_IN('res_init __res_init', 'resolv', checklibc=True)
  66         conf.CHECK_FUNCS_IN('res_ninit __res_ninit', 'resolv', checklibc=True)
  67         conf.CHECK_FUNCS_IN('res_close __res_close', 'resolv', checklibc=True)
  68         conf.CHECK_FUNCS_IN('res_nclose __res_nclose', 'resolv', checklibc=True)
  69         conf.CHECK_FUNCS_IN('res_query __res_query', 'resolv', checklibc=True)
  70         conf.CHECK_FUNCS_IN('res_nquery __res_nquery', 'resolv', checklibc=True)
  71         conf.CHECK_FUNCS_IN('res_search __res_search', 'resolv', checklibc=True)
  72         conf.CHECK_FUNCS_IN('res_nsearch __res_nsearch', 'resolv', checklibc=True)
  73
  74         conf.CHECK_DECLS('ns_name_compress', headers='sys/types.h arpa/nameser.h')
  75         if (conf.CONFIG_SET("HAVE_DECL_NS_NAME_COMPRESS")):
  76             conf.DEFINE("HAVE_NS_NAME_COMPRESS", 1)
  77
  78         # Create full path to resolv_wrapper
  79         blddir = os.path.realpath(conf.bldnode.abspath())
  80         libresolv_wrapper_so_path = blddir + '/default/third_party/resolv_wrapper/libresolv-wrapper.so'
  81
  82     conf.DEFINE('LIBRESOLV_WRAPPER_SO_PATH', libresolv_wrapper_so_path)
  83     conf.DEFINE('RESOLV_WRAPPER', 1)
  84
  85 def build(bld):
  86     if bld.CONFIG_SET("HAVE_RESOLV_H") and not bld.CONFIG_SET("USING_SYSTEM_RESOLV_WRAPPER"):
  87         # We need to do it this way or the library wont work.
  88         # We need force_unversioned=True as symbol versioning
  89         # breaks preloading!
  90         bld.SAMBA_LIBRARY('resolv_wrapper',
  91                           source='resolv_wrapper.c',
  92                           deps='dl resolv',
  93                           install=False,
  94                           force_unversioned=True,
  95                           realname='libresolv-wrapper.so')