--- server/drivers/laser/lms400_cola.cc
+++ server/drivers/laser/lms400_cola.cc
@@ -5,6 +5,7 @@
  CVS: $Id: lms400_cola.cc 6499 2008-06-10 01:13:51Z thjc $
 */
 #include <sys/socket.h>
+#include <unistd.h>
 #include <netdb.h>
 #include <libplayercore/playercore.h>
 
--- server/drivers/mixed/mricp/src/geometry2D.cpp
+++ server/drivers/mixed/mricp/src/geometry2D.cpp
@@ -5,6 +5,7 @@
 #include "geometry2D.h"
 #include <cmath>
 #include <cassert>
+#include <stdio.h>
 
 using namespace std;
 
--- server/drivers/mixed/mricp/src/map.cpp
+++ server/drivers/mixed/mricp/src/map.cpp
@@ -21,6 +21,7 @@
 #include <math.h>
 #include <cassert>
 #include <iostream>
+#include <stdlib.h>
 using namespace std;