diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Image/Gui/GLImageBox.cpp FreeCAD-0.12.5284/src/Mod/Image/Gui/GLImageBox.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Image/Gui/GLImageBox.cpp	2012-01-04 21:20:01.762755107 +0100
+++ FreeCAD-0.12.5284/src/Mod/Image/Gui/GLImageBox.cpp	2012-01-04 21:23:57.808143007 +0100
@@ -25,6 +25,16 @@
 #if defined(__MINGW32__)
 # include <GL/gl.h>
 # include <GL/glext.h>
+#elif defined (FC_OS_MACOSX)
+# include <OpenGL/gl.h>
+# include <OpenGL/glu.h>
+#elif defined (FC_OS_WIN32)
+# include <Windows.h>
+# include <GL/gl.h>
+# include <GL/glu.h>
+#else
+# include <GL/gl.h>
+# include <GL/glu.h>
 #endif
 
 #include "GLImageBox.h"
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/AppPartPy.cpp FreeCAD-0.12.5284/src/Mod/Part/App/AppPartPy.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/AppPartPy.cpp	2012-01-04 21:20:01.919420925 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/AppPartPy.cpp	2012-01-04 21:27:16.473733409 +0100
@@ -492,7 +492,7 @@
             d.SetCoord(vec.x, vec.y, vec.z);
         }
         Handle_Geom_Plane aPlane = new Geom_Plane(p, d);
-        BRepBuilderAPI_MakeFace Face(aPlane, 0.0, length, 0.0, width);
+        BRepBuilderAPI_MakeFace Face(aPlane, 0.0, length, 0.0, width, Precision::Confusion());
         return new TopoShapeFacePy(new TopoShape((Face.Face()))); 
     }
     catch (Standard_DomainError) {
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/Geometry.cpp FreeCAD-0.12.5284/src/Mod/Part/App/Geometry.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/Geometry.cpp	2012-01-04 21:20:01.916087610 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/Geometry.cpp	2012-01-04 21:28:01.363490221 +0100
@@ -1252,7 +1252,7 @@
     Handle_Geom_Surface s = Handle_Geom_Surface::DownCast(handle());
     Standard_Real u1,u2,v1,v2;
     s->Bounds(u1,u2,v1,v2);
-    BRepBuilderAPI_MakeFace mkBuilder(s, u1, u2, v1, v2);
+    BRepBuilderAPI_MakeFace mkBuilder(s, u1, u2, v1, v2, Precision::Confusion());
     return mkBuilder.Shape();
 }
 
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/GeometrySurfacePyImp.cpp FreeCAD-0.12.5284/src/Mod/Part/App/GeometrySurfacePyImp.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/GeometrySurfacePyImp.cpp	2012-01-04 21:20:01.919420925 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/GeometrySurfacePyImp.cpp	2012-01-04 21:29:16.406417012 +0100
@@ -79,7 +79,7 @@
             s->Bounds(u1,u2,v1,v2);
             if (!PyArg_ParseTuple(args, "|dddd", &u1,&u2,&v1,&v2))
                 return 0;
-            BRepBuilderAPI_MakeFace mkBuilder(s, u1, u2, v1, v2);
+            BRepBuilderAPI_MakeFace mkBuilder(s, u1, u2, v1, v2, Precision::Confusion());
             TopoDS_Shape sh = mkBuilder.Shape();
             return new TopoShapeFacePy(new TopoShape(sh));
         }
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/PrimitiveFeature.cpp FreeCAD-0.12.5284/src/Mod/Part/App/PrimitiveFeature.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/PrimitiveFeature.cpp	2012-01-04 21:20:01.916087610 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/PrimitiveFeature.cpp	2012-01-04 21:30:26.759369209 +0100
@@ -191,7 +191,7 @@
     gp_Pnt pnt(0.0,0.0,0.0);
     gp_Dir dir(0.0,0.0,1.0);
     Handle_Geom_Plane aPlane = new Geom_Plane(pnt, dir);
-    BRepBuilderAPI_MakeFace mkFace(aPlane, 0.0, L, 0.0, W);
+    BRepBuilderAPI_MakeFace mkFace(aPlane, 0.0, L, 0.0, W, Precision::Confusion());
 
     const char *error=0;
     switch (mkFace.Error())
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/TopoShape.cpp FreeCAD-0.12.5284/src/Mod/Part/App/TopoShape.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/TopoShape.cpp	2012-01-04 21:20:01.922754240 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/TopoShape.cpp	2012-01-05 00:54:08.116493768 +0100
@@ -1335,7 +1335,7 @@
     double u1,u2,v1,v2;
     surf->Bounds(u1,u2,v1,v2);
 
-    BRepBuilderAPI_MakeFace mkBuilder(surf, umin, umax, v1, v2);
+    BRepBuilderAPI_MakeFace mkBuilder(surf, umin, umax, v1, v2, Precision::Confusion());
     return mkBuilder.Face();
 }
 
@@ -1388,7 +1388,7 @@
 
         Standard_Real u1,u2,v1,v2;
         mySurface->Bounds(u1,u2,v1,v2);
-        BRepBuilderAPI_MakeFace mkBuilder(mySurface, u1, u2, v1, v2);
+        BRepBuilderAPI_MakeFace mkBuilder(mySurface, u1, u2, v1, v2, Precision::Confusion());
         return mkBuilder.Shape();
     }
 
@@ -1440,7 +1440,7 @@
     mkSweep.Perform(tol, Standard_False, GeomAbs_C1, BSplCLib::MaxDegree(), 1000);
 
     const Handle_Geom_Surface& surf = mkSweep.Surface();
-    BRepBuilderAPI_MakeFace mkBuilder(surf, umin, umax, vmin, vmax);
+    BRepBuilderAPI_MakeFace mkBuilder(surf, umin, umax, vmin, vmax, Precision::Confusion());
     return mkBuilder.Face();
 }
 
diff -Naur FreeCAD-0.12.5284.orig/src/Mod/Part/App/TopoShapeFacePyImp.cpp FreeCAD-0.12.5284/src/Mod/Part/App/TopoShapeFacePyImp.cpp
--- FreeCAD-0.12.5284.orig/src/Mod/Part/App/TopoShapeFacePyImp.cpp	2012-01-04 21:20:01.919420925 +0100
+++ FreeCAD-0.12.5284/src/Mod/Part/App/TopoShapeFacePyImp.cpp	2012-01-04 21:33:14.611793209 +0100
@@ -135,7 +135,7 @@
                 return -1;
             }
 
-            BRepBuilderAPI_MakeFace mkFace(S);
+	      BRepBuilderAPI_MakeFace mkFace(S, Precision::Confusion());
             if (bound) {
                 Py::List list(bound);
                 for (Py::List::iterator it = list.begin(); it != list.end(); ++it) {