diff -Nru wpa_supplicant-1.0.orig/wpa_supplicant/wpa_gui-qt4/wpagui.cpp wpa_supplicant-1.0/wpa_supplicant/wpa_gui-qt4/wpagui.cpp
--- wpa_supplicant-1.0.orig/wpa_supplicant/wpa_gui-qt4/wpagui.cpp	2012-10-31 02:08:40.425423875 +0100
+++ wpa_supplicant-1.0/wpa_supplicant/wpa_gui-qt4/wpagui.cpp	2012-10-31 04:01:09.808546838 +0100
@@ -23,6 +23,7 @@
 #include <QCloseEvent>
 #include <QImageReader>
 #include <QSettings>
+#include <unistd.h>
 
 #include "wpagui.h"
 #include "dirent.h"