Index: src/cal3d/platform.h
--- src/cal3d/platform.h.orig
+++ src/cal3d/platform.h
@@ -76,6 +76,7 @@ typedef int intptr_t;
 
 // standard includes
 #include <stdlib.h>
+#include <string.h>
 #include <math.h>
 
 // debug includes