-#include <sys/wait.h>
-#include <pwd.h>
-#include <errno.h>
-#include <netdb.h>
-#include <signal.h>
-#include <fcntl.h> // for O_WRONLY and friends
-
-#include <glib.h>
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
-#include <gtk/gtkfeatures.h>
-#include <gdk/gdkx.h>
-
-#ifdef __HPUX__
- // under HP-UX XKBlib.h defines structures with field named "explicit" -
- // which is, of course, an error for a C++ compiler
+
+#include "glib.h"
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"
+#include "gtk/gtkfeatures.h"
+#include "gdk/gdkx.h"
+
+#ifdef HAVE_X11_XKBLIB_H
+ #ifdef __HPUX__
+ /* under HP-UX XKBlib.h defines structures with field named "explicit" -
+ * which is, of course, an error for a C++ compiler */