--- configure.in.orig	Thu Nov  6 20:31:56 2003
+++ configure.in	Thu Nov 13 11:45:26 2003
@@ -510,6 +510,19 @@
 	AC_DEFINE(HAVE_POSIX_THREADS)
     ;;
 
+  FREEBSD)
+    dnl the AC_CHECK_TYPES for socklen_t doesn't include sys/socket.h
+    dnl so test for socklen_t with sys/socket.h included
+    AC_MSG_CHECKING(if sys/socket.h defines socklen_t)
+    AC_TRY_COMPILE([#include <sys/types.h>
+       #include <sys/socket.h>],
+    [socklen_t s;],
+    [AC_DEFINE(HAVE_SOCKLEN_T) AC_MSG_RESULT(yes)],
+    [AC_MSG_RESULT(no)])
+    dnl define HAVE_POSIX_THREADS for FreeBSD 4.x support
+    AC_DEFINE(HAVE_POSIX_THREADS)
+    ;;
+
   SOLARIS|solx86)
     dnl kkuznetsov: Solaris always check for -lnsl
     AC_CHECK_LIB(nsl, gethostname, XE_APPEND(-lnsl,LIBS))