break;
case CONTROL_CUTTHROUGH_DELIVERY:
+#ifndef DISABLE_PRDR
if (prdr_requested)
+#else
+ if (0)
+#endif
/* Too hard to think about for now. We might in future cutthrough
the case where both sides handle prdr and this-node prdr acl
is "accept" */
if (smtp_out != NULL && !disable_delay_flush)
mac_smtp_fflush();
-#if !defined(NO_POLL_H) && defined (_GNU_SOURCE)
+#if !defined(NO_POLL_H) && defined (POLLRDHUP)
{
struct pollfd p;
nfds_t n = 0;