lib/resolv_wrapper/wscript

   1 #!/usr/bin/env python
   2
   3 import os
   4
   5 VERSION="1.1.3"
   6
   7 def configure(conf):
   8     if conf.CHECK_BUNDLED_SYSTEM('resolv_wrapper', minversion=VERSION, set_target=False):
   9         conf.DEFINE('USING_SYSTEM_RESOLV_WRAPPER', 1)
  10         libresolv_wrapper_so_path = 'libresolv_wrapper.so'
  11     else:
  12         # check HAVE_GCC_THREAD_LOCAL_STORAGE
  13         conf.CHECK_CODE('''
  14             __thread int tls;
  15
  16             int main(void) {
  17                 return 0;
  18             }
  19             ''',
  20             'HAVE_GCC_THREAD_LOCAL_STORAGE',
  21             addmain=False,
  22             msg='Checking for thread local storage')
  23
  24         # check HAVE_DESTRUCTOR_ATTRIBUTE
  25         conf.CHECK_CODE('''
  26             void test_destructor_attribute(void) __attribute__ ((destructor));
  27
  28             void test_destructor_attribute(void)
  29             {
  30                 return;
  31             }
  32
  33             int main(void) {
  34                 return 0;
  35             }
  36             ''',
  37             'HAVE_DESTRUCTOR_ATTRIBUTE',
  38             addmain=False,
  39             msg='Checking for library destructor support')
  40
  41         # check HAVE_FUNCTION_ATTRIBUTE_FORMAT
  42         conf.CHECK_CODE('''
  43             void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
  44
  45             int main(void) {
  46                 return 0;
  47             }
  48             ''',
  49             'HAVE_FUNCTION_ATTRIBUTE_FORMAT',
  50             addmain=False,
  51             msg='Checking for printf format validation support')
  52
  53         conf.CHECK_HEADERS('resolv.h')
  54
  55         conf.CHECK_STRUCTURE_MEMBER('struct _res_state',
  56                                     '_u._ext.nsaddrs',
  57                                     headers='resolv.h',
  58                                     define='HAVE_RESOLV_IPV6_NSADDRS')
  59
  60         conf.CHECK_FUNCS_IN('res_ninit', 'resolv')
  61         if conf.CONFIG_SET('HAVE_RES_NINIT'):
  62             conf.DEFINE('HAVE_RES_NINIT_IN_LIBRESOLV', 1)
  63
  64         conf.CHECK_FUNCS_IN('res_nclose', 'resolv')
  65         if conf.CONFIG_SET('HAVE_RES_NCLOSE'):
  66             conf.DEFINE('HAVE_RES_NCLOSE_IN_LIBRESOLV', 1)
  67
  68         conf.CHECK_FUNCS_IN('res_init __res_init', 'resolv', checklibc=True)
  69         conf.CHECK_FUNCS_IN('res_ninit __res_ninit', 'resolv', checklibc=True)
  70         conf.CHECK_FUNCS_IN('res_close __res_close', 'resolv', checklibc=True)
  71         conf.CHECK_FUNCS_IN('res_nclose __res_nclose', 'resolv', checklibc=True)
  72         conf.CHECK_FUNCS_IN('res_query __res_query', 'resolv', checklibc=True)
  73         conf.CHECK_FUNCS_IN('res_nquery __res_nquery', 'resolv', checklibc=True)
  74         conf.CHECK_FUNCS_IN('res_search __res_search', 'resolv', checklibc=True)
  75         conf.CHECK_FUNCS_IN('res_nsearch __res_nsearch', 'resolv', checklibc=True)
  76
  77         conf.CHECK_DECLS('ns_name_compress', headers='sys/types.h arpa/nameser.h')
  78         if (conf.CONFIG_SET("HAVE_DECL_NS_NAME_COMPRESS")):
  79             conf.DEFINE("HAVE_NS_NAME_COMPRESS", 1)
  80
  81         # Create full path to resolv_wrapper
  82         srcdir = os.path.realpath(conf.srcdir)
  83         libresolv_wrapper_so_path = srcdir + '/bin/default/lib/resolv_wrapper/libresolv-wrapper.so'
  84
  85     conf.DEFINE('LIBRESOLV_WRAPPER_SO_PATH', libresolv_wrapper_so_path)
  86     conf.DEFINE('RESOLV_WRAPPER', 1)
  87
  88 def build(bld):
  89     if bld.CONFIG_SET("HAVE_RESOLV_H") and not bld.CONFIG_SET("USING_SYSTEM_RESOLV_WRAPPER"):
  90         # We need to do it this way or the library wont work.
  91         # Using private_library=True will add symbol version which
  92         # breaks preloading!
  93         bld.SAMBA_LIBRARY('resolv_wrapper',
  94                           source='resolv_wrapper.c',
  95                           deps='dl resolv',
  96                           install=False,
  97                           realname='libresolv-wrapper.so')