Index: pglogical_apply_spi.c
--- pglogical_apply_spi.c.orig	2018-10-23 16:35:17.000000000 +0200
+++ pglogical_apply_spi.c	2018-10-25 22:40:34.519933000 +0200
@@ -16,6 +16,8 @@
  */
 #include <stdio.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <netinet/in.h>
 
 #include "postgres.h"
 
Index: pglogical_fe.c
--- pglogical_fe.c.orig	2018-10-23 16:35:17.000000000 +0200
+++ pglogical_fe.c	2018-10-25 22:39:02.895783000 +0200
@@ -10,6 +10,9 @@
  *
  *-------------------------------------------------------------------------
  */
+
+#include <sys/types.h>
+#include <sys/wait.h>
 #include "postgres_fe.h"
 
 #include "pglogical_fe.h"