--- protocol/hp_ipp.c.orig	2015-04-14 11:53:09.000000000 +0200
+++ protocol/hp_ipp.c	2015-05-19 13:12:47.000000000 +0200
@@ -18,6 +18,9 @@ Boston, MA 02110-1301, USA.
 
 \******************************************************************************/
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
 
 #include <cups/cups.h>
 #include <cups/language.h>
--- scan/sane/sclpml.c.orig	2015-04-14 11:53:17.000000000 +0200
+++ scan/sane/sclpml.c	2015-05-19 13:45:44.000000000 +0200
@@ -25,11 +25,16 @@
 
 \************************************************************************************/
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <string.h>
+#include <sys/time.h>
 #include "sane.h"
 #include "saneopts.h"
 #include "common.h"
--- scan/sane/bb_ledm.c.orig	2015-05-19 13:47:53.000000000 +0200
+++ scan/sane/bb_ledm.c	2015-05-19 13:48:42.000000000 +0200
@@ -26,7 +26,7 @@
 # include "http.h"
 # include "xml.h"
 # include <stdlib.h>
-
+# include <unistd.h>
 # include <stdint.h>
 
 # define _STRINGIZE(x) #x
--- scan/sane/hpaio.c.orig	2015-04-14 11:53:17.000000000 +0200
+++ scan/sane/hpaio.c	2015-05-19 13:51:21.000000000 +0200
@@ -43,6 +43,7 @@
 #include "hpaio.h"
 # include "ledm.h"
 #include "sclpml.h"
+#include "io.h"
 
 #define DEBUG_DECLARE_ONLY
 #include "sanei_debug.h"
--- io/hpmud/jd.c.orig	2015-05-19 13:46:39.000000000 +0200
+++ io/hpmud/jd.c	2015-05-19 13:47:01.000000000 +0200
@@ -31,6 +31,7 @@
 #endif
 
 #include <signal.h>
+#include <stdlib.h>
 #include "hpmud.h"
 #include "hpmudi.h"