diff -burN sources/glprintf.cpp sources-linux/glprintf.cpp
--- sources/glprintf.cpp	2002-10-26 00:17:00.000000000 +0200
+++ sources-linux/glprintf.cpp	2005-06-18 18:22:54.000000000 +0200
@@ -3,6 +3,7 @@
 #endif
 #include "GL/gl.h"
 
+#include "string.h"
 #include "stdio.h"
 #include "stdarg.h"
 #include "GL/gl.h"
diff -burN sources/list.h sources-linux/list.h
--- sources/list.h	2002-10-27 12:17:00.000000000 +0100
+++ sources-linux/list.h	2005-06-18 18:21:34.000000000 +0200
@@ -1,6 +1,9 @@
 #ifndef GENERIC_LIST
 #define GENERIC_LIST
 
+
+#include "stdlib.h"
+
 /* 
 Funciones para LISTAS: 
 
diff -burN sources/maps.cpp sources-linux/maps.cpp
--- sources/maps.cpp	2005-05-05 23:42:00.000000000 +0200
+++ sources-linux/maps.cpp	2005-06-18 18:23:05.000000000 +0200
@@ -3,6 +3,7 @@
 #endif
 
 #include "stdio.h"
+#include "string.h"
 
 #include "GL/gl.h"
 #include "GL/glu.h"
diff -burN sources/myglutaux.cpp sources-linux/myglutaux.cpp
--- sources/myglutaux.cpp	2002-10-26 00:17:00.000000000 +0200
+++ sources-linux/myglutaux.cpp	2005-06-18 18:23:29.000000000 +0200
@@ -5,6 +5,8 @@
 #include <GL/gl.h>
 #include "GL/glut.h"
 
+#include "string.h"
+#include "stdlib.h"
 #include "stdio.h"
 #include "math.h"
 #include "vector.h"