Initial round of changes for 2.3 beta

[openldap] / build / openldap.m4

diff --git a/build/openldap.m4 b/build/openldap.m4
index 6ca7b6a552d8ca4c8d70b79bb6b91a5ade10ca8d..c69f1246f2704574ba59fecdeadbb791b3917510 100644 (file)
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -247,6 +247,75 @@ fi
 ])
 dnl
 dnl ====================================================================
+dnl DNS resolver macros
+AC_DEFUN([OL_RESOLVER_TRY],
+[if test $ol_cv_lib_resolver = no ; then
+       AC_CACHE_CHECK([for resolver link (]ifelse($2,,default,$2)[)],[$1],
+[
+       ol_RESOLVER_LIB=ifelse($2,,,$2)
+       ol_LIBS=$LIBS
+       LIBS="$ol_RESOLVER_LIB $LIBS"
+
+       AC_TRY_LINK([
+#ifdef HAVE_SYS_TYPES_H
+#      include <sys/types.h>
+#endif
+#include <netinet/in.h>
+#ifdef HAVE_ARPA_NAMESER_H
+#      include <arpa/nameser.h>
+#endif
+#ifdef HAVE_RESOLV_H
+#      include <resolv.h>
+#endif
+],[{
+       int len, status;
+       char *request = NULL;
+       unsigned char reply[64*1024];
+       unsigned char host[64*1024];
+       unsigned char *p;
+
+#ifdef NS_HFIXEDSZ
+       /* Bind 8/9 interface */
+       len = res_query(request, ns_c_in, ns_t_srv, reply, sizeof(reply));
+#else
+       /* Bind 4 interface */
+# ifndef T_SRV
+#  define T_SRV 33
+# endif
+       len = res_query(request, C_IN, T_SRV, reply, sizeof(reply));
+#endif
+       p = reply;
+#ifdef NS_HFIXEDSZ
+       /* Bind 8/9 interface */
+       p += NS_HFIXEDSZ;
+#elif defined(HFIXEDSZ)
+       /* Bind 4 interface w/ HFIXEDSZ */
+       p += HFIXEDSZ;
+#else
+       /* Bind 4 interface w/o HFIXEDSZ */
+       p += sizeof(HEADER);
+#endif
+       status = dn_expand( reply, reply+len, p, host, sizeof(host));
+}],[$1=yes],[$1=no])
+
+       LIBS="$ol_LIBS"
+])
+
+       if test $$1 = yes ; then
+               ol_cv_lib_resolver=ifelse($2,,yes,$2)
+       fi
+fi
+])
+dnl --------------------------------------------------------------------
+dnl Try to locate appropriate library
+AC_DEFUN([OL_RESOLVER_LINK],
+[ol_cv_lib_resolver=no
+OL_RESOLVER_TRY(ol_cv_resolver_none)
+OL_RESOLVER_TRY(ol_cv_resolver_resolv,[-lresolv])
+OL_RESOLVER_TRY(ol_cv_resolver_bind,[-lbind])
+])
+dnl
+dnl ====================================================================
 dnl Berkeley DB macros
 dnl
 dnl --------------------------------------------------------------------