$OpenBSD: patch-configure,v 1.22 2018/04/08 10:47:23 robert Exp $
Index: configure
--- configure.orig
+++ configure
@@ -6461,6 +6461,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 
 #include <stdlib.h>
 #include <sys/queue.h>
+#include <sys/select.h>
 #include <sys/sensors.h>
 int
 main ()
@@ -9355,7 +9356,7 @@ $as_echo "yes" >&6; }
 
 			 JABBER_INCDIR="$IKSEMEL_CPPFLAGS"
 			 JABBER_LIBDIR="$IKSEMEL_LDFLAGS"
-			 JABBER_LIBS="-liksemel"
+			 JABBER_LIBS="-liksemel -lpthread"
 
 fi
        else
@@ -9365,7 +9366,7 @@ $as_echo_n "checking for iksemel support... " >&6; }
                if test -f $_libiksemel_with/include/iksemel.h; then
                        JABBER_INCDIR="-I$_libiksemel_with/include"
                        JABBER_LIBDIR="-L$_libiksemel_with/lib"
-                       JABBER_LIBS="-liksemel"
+                       JABBER_LIBS="-liksemel -lpthread"
 		       { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
                else
