--- a/layer1/Basis.orig.h	2021-05-10 20:38:37.000000000 +0200
+++ b/layer1/Basis.h	2021-10-05 20:07:14.567410004 +0200
@@ -38,6 +38,10 @@
 
 */
 
+#ifdef None
+#undef None
+#endif
+
 enum class cCylCap {
   None = 0,
   Flat = 1,