--- src/cal3d/hardwaremodel.cpp
+++ src/cal3d/hardwaremodel.cpp
@@ -24,6 +24,7 @@
 #include "cal3d/coreskeleton.h"
 #include "cal3d/skeleton.h"
 
+#include <string.h>
 
  /*****************************************************************************/
 /** Constructs the hardware model instance.
--- src/cal3d/platform.cpp
+++ src/cal3d/platform.cpp
@@ -18,6 +18,8 @@
 
 #include "cal3d/platform.h"
 
+#include <string.h>
+
  /*****************************************************************************/
 /** Constructs the platform instance.
   *
--- src/cal3d/renderer.cpp
+++ src/cal3d/renderer.cpp
@@ -29,6 +29,8 @@
 #include "cal3d/coresubmesh.h"
 #include "cal3d/physique.h"
 
+#include <string.h>
+
  /*****************************************************************************/
 /** Constructs the renderer instance.
   *
--- src/cal3d/submesh.cpp
+++ src/cal3d/submesh.cpp
@@ -16,6 +16,7 @@
 #include "cal3d/error.h"
 #include "cal3d/coresubmesh.h"
 
+#include <string.h>
 
 CalSubmesh::CalSubmesh(CalCoreSubmesh* coreSubmesh)
 {
--- src/cal3d_converter.cpp
+++ src/cal3d_converter.cpp
@@ -11,6 +11,8 @@
 
 #include "cal3d/cal3d.h"
 
+#include <strings.h>
+
 #define SKELETON 0
 #define MESH 1
 #define ANIMATION 2