diff -rupN --no-dereference netgen-6.2.2009/libsrc/include/meshing.hpp netgen-6.2.2009-new/libsrc/include/meshing.hpp
--- netgen-6.2.2009/libsrc/include/meshing.hpp	2020-11-11 17:40:06.000000000 +0100
+++ netgen-6.2.2009-new/libsrc/include/meshing.hpp	2020-11-12 15:24:29.094268845 +0100
@@ -1 +1 @@
-#include <../meshing/meshing.hpp>
+#include "../meshing/meshing.hpp"
diff -rupN --no-dereference netgen-6.2.2009/libsrc/include/myadt.hpp netgen-6.2.2009-new/libsrc/include/myadt.hpp
--- netgen-6.2.2009/libsrc/include/myadt.hpp	2020-11-11 17:40:06.000000000 +0100
+++ netgen-6.2.2009-new/libsrc/include/myadt.hpp	2020-11-12 15:24:29.095268844 +0100
@@ -1 +1 @@
-#include <../general/myadt.hpp>
+#include "../general/myadt.hpp"
diff -rupN --no-dereference netgen-6.2.2009/libsrc/include/stlgeom.hpp netgen-6.2.2009-new/libsrc/include/stlgeom.hpp
--- netgen-6.2.2009/libsrc/include/stlgeom.hpp	2020-11-11 17:40:06.000000000 +0100
+++ netgen-6.2.2009-new/libsrc/include/stlgeom.hpp	2020-11-12 15:24:29.095268844 +0100
@@ -1 +1 @@
-#include <../stlgeom/stlgeom.hpp>
+#include "../stlgeom/stlgeom.hpp"