+diff -Naur netgen-4.9.13_orig/libsrc/occ/Partition_Inter3d.cxx netgen-4.9.13_new/libsrc/occ/Partition_Inter3d.cxx
+--- netgen-4.9.13_orig/libsrc/occ/Partition_Inter3d.cxx 2009-08-24 06:12:24.000000000 +0400
++++ netgen-4.9.13_new/libsrc/occ/Partition_Inter3d.cxx 2011-08-10 16:57:40.000000000 +0400
+@@ -86,6 +86,9 @@
+ #include <TopOpeBRepTool_OutCurveType.hxx>
+ #include <TopOpeBRep_DSFiller.hxx>
+ #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
++
++#include <Standard_Version.hxx>
++
+ #include <stdio.h>
+
+ //=======================================================================
+@@ -243,7 +246,12 @@
+ Standard_Integer i, nbExt = anExtPS.NbExt();
+ Extrema_POnSurf aPOnSurf;
+ for (i = 1; i <= nbExt; ++i )
++#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060400
++// porting to OCCT6.5.1
++ if (anExtPS.SquareDistance( i ) <= TolE * TolE) {
++#else
+ if (anExtPS.Value( i ) <= TolE) {
++#endif
+ aPOnSurf = anExtPS.Point( i );
+ break;
+ }
+diff -Naur netgen-4.9.13_orig/libsrc/occ/Partition_Loop2d.cxx netgen-4.9.13_new/libsrc/occ/Partition_Loop2d.cxx
+--- netgen-4.9.13_orig/libsrc/occ/Partition_Loop2d.cxx 2009-08-24 06:12:24.000000000 +0400
++++ netgen-4.9.13_new/libsrc/occ/Partition_Loop2d.cxx 2011-08-10 16:57:40.000000000 +0400
+@@ -22,7 +22,6 @@
+ #include <BRepAdaptor_Surface.hxx>
+ #include <BRepAlgo_AsDes.hxx>
+ #include <BRepAlgo_FaceRestrictor.hxx>
+-#include <BRepOffset_DataMapOfShapeReal.hxx>
+ #include <BRepTopAdaptor_FClass2d.hxx>
+ #include <BRep_Builder.hxx>
+ #include <BRep_Tool.hxx>
+@@ -51,6 +50,15 @@
+ #include <gp_Pnt.hxx>
+ #include <gp_Pnt2d.hxx>
+
++#include <Standard_Version.hxx>
++
++#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060400
++// porting to OCCT6.5.1
++#include <TopTools_DataMapOfShapeReal.hxx>
++#else
++#include <BRepOffset_DataMapOfShapeReal.hxx>
++#endif
++
+ //=======================================================================
+ //function : Partition_Loop2d
+ //purpose :
+@@ -519,7 +527,12 @@
+ DC.Initialize( DegEdge, F );
+
+ // avoid intersecting twice the same edge
++#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060400
++// porting to OCCT6.5.1
++ TopTools_DataMapOfShapeReal EUMap ( EdgesList.Extent() );
++#else
+ BRepOffset_DataMapOfShapeReal EUMap ( EdgesList.Extent() );
++#endif
+
+ Standard_Real U, f, l;
+ BRep_Tool::Range (DegEdge, f, l);
+diff -Naur netgen-4.9.13_orig/libsrc/occ/Partition_Spliter.cxx netgen-4.9.13_new/libsrc/occ/Partition_Spliter.cxx
+--- netgen-4.9.13_orig/libsrc/occ/Partition_Spliter.cxx 2009-08-24 06:12:24.000000000 +0400
++++ netgen-4.9.13_new/libsrc/occ/Partition_Spliter.cxx 2011-08-10 16:57:40.000000000 +0400
+@@ -79,6 +79,8 @@
+ #include <GeomAdaptor_Curve.hxx>
+ #include <TopOpeBRepTool_CurveTool.hxx>
+
++#include <Standard_Version.hxx>
++
+ #ifdef DEB
+ //# define PART_PERF
+ #endif
+@@ -1169,7 +1171,12 @@
+ for (; j<=nbj && ok; ++j) {
+ if (Extrema.IsMin(j)) {
+ hasMin = Standard_True;
++#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060400
++// porting to OCCT6.5.1
++ ok = Extrema.SquareDistance(j) <= tol * tol;
++#else
+ ok = Extrema.Value(j) <= tol;
++#endif
+ }
+ }
+ }