--- a/include/sane/sanei_udp.h
+++ b/include/sane/sanei_udp.h
-@@ -27,6 +27,7 @@
+@@ -27,6 +27,9 @@
#include <netinet/in.h>
#include <netdb.h>
#endif
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
extern SANE_Status sanei_udp_open(const char *host, int port, int *fdp);
extern SANE_Status sanei_udp_open_broadcast(int *fdp);
--- a/backend/kvs20xx_cmd.h
+++ b/backend/kvs20xx_cmd.h
-@@ -9,6 +9,8 @@
+@@ -9,6 +9,10 @@
Panasonic KV-S20xx USB-SCSI scanners.
*/
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
+
#define COMMAND_BLOCK 1
#define DATA_BLOCK 2
#define RESPONSE_BLOCK 3
--- a/backend/kvs40xx.h
+++ b/backend/kvs40xx.h
-@@ -10,6 +10,7 @@
+@@ -10,6 +10,9 @@
#include "../include/sane/config.h"
#include <semaphore.h>
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
#undef BACKEND_NAME
#define BACKEND_NAME kvs40xx
--- a/backend/hp5400.c
+++ b/backend/hp5400.c
-@@ -67,6 +67,7 @@
+@@ -67,6 +67,9 @@
#include <stdlib.h> /* malloc, free */
#include <string.h> /* memcpy */
#include <stdio.h>
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
#define HP5400_CONFIG_FILE "hp5400.conf"
--- a/backend/hp5590.c
+++ b/backend/hp5590.c
-@@ -48,6 +48,7 @@
+@@ -48,6 +48,9 @@
#include <stdio.h>
#include <string.h>
#include <unistd.h>
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
#include "../include/sane/sane.h"
#define BACKEND_NAME hp5590
--- a/backend/epsonds-io.c
+++ b/backend/epsonds-io.c
-@@ -16,6 +16,7 @@
+@@ -16,6 +16,9 @@
#include "sane/config.h"
#include <ctype.h>
#include <unistd.h> /* sleep */
++#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
++#endif
#include "epsonds.h"
#include "epsonds-io.h"