added autoconf check for sa_len

acconfig.h

@@ -26,3 +26,6 @@
 
 /* define if you need AF_INET6 */
 #undef NEED_AF_INET6
+
+/* define if your struct sockaddr has a sa_len member */
+#undef HAVE_SA_LEN

config.h.in

@@ -27,6 +27,9 @@
 /* define if you need AF_INET6 */
 #undef NEED_AF_INET6
 
+/* define if your struct sockaddr has a sa_len member */
+#undef HAVE_SA_LEN
+
 /* Define if you have the <fcntl.h> header file.  */
 #undef HAVE_FCNTL_H
 

configure

@@ -1722,6 +1722,29 @@ EOF
 		;;
 esac
 
+echo $ac_n "checking for sa_len in struct sockaddr""... $ac_c" 1>&6
+echo "configure:1727: checking for sa_len in struct sockaddr" >&5
+cat > conftest.$ac_ext <<EOF
+#line 1729 "configure"
+#include "confdefs.h"
+#include <sys/socket.h>
+EOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  egrep "sa_len" >/dev/null 2>&1; then
+  rm -rf conftest*
+  echo "$ac_t""yes" 1>&6
+	cat >> confdefs.h <<\EOF
+#define HAVE_SA_LEN 1
+EOF
+
+else
+  rm -rf conftest*
+  echo "$ac_t""no" 1>&6
+fi
+rm -f conftest*
+
+
+
 
 BIND9_TOP_BUILDDIR=`pwd`
 

configure.in

@@ -13,7 +13,7 @@ dnl PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 dnl ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 dnl SOFTWARE.
 
-AC_REVISION($Revision: 1.21 $)
+AC_REVISION($Revision: 1.22 $)
 
 AC_INIT(lib/dns/name.c)
 AC_CONFIG_HEADER(config.h)
@@ -144,6 +144,12 @@ case "$host" in
 		;;
 esac
 
+AC_MSG_CHECKING(for sa_len in struct sockaddr)
+AC_EGREP_HEADER(sa_len, sys/socket.h,
+	[AC_MSG_RESULT(yes)
+	AC_DEFINE(HAVE_SA_LEN)],
+	[AC_MSG_RESULT(no)])
+
 AC_SUBST(BIND9_TOP_BUILDDIR)
 BIND9_TOP_BUILDDIR=`pwd`