diff -p -up openldap-2.4.13/servers/slapd/slap.h.cldap openldap-2.4.13/servers/slapd/slap.h
--- openldap-2.4.13/servers/slapd/slap.h.cldap	2008-11-11 21:51:53.000000000 +0100
+++ openldap-2.4.13/servers/slapd/slap.h	2008-12-13 12:02:21.000000000 +0100
@@ -33,6 +33,7 @@
 #include <ac/stdlib.h>
 
 #include <sys/types.h>
+#include <sys/socket.h>
 #include <ac/syslog.h>
 #include <ac/regex.h>
 #include <ac/signal.h>