diff --git a/Straight_skeleton_2/examples/Straight_skeleton_2/makefile b/Straight_skeleton_2/examples/Straight_skeleton_2/makefile
deleted file mode 100644
index 8355c481d63..00000000000
--- a/Straight_skeleton_2/examples/Straight_skeleton_2/makefile
+++ /dev/null
@@ -1,85 +0,0 @@
-# Created by the script cgal_create_makefile
-# This is the makefile for compiling a CGAL application.
-
-#---------------------------------------------------------------------#
-#                    include platform specific settings
-#---------------------------------------------------------------------#
-# Choose the right include file from the <cgalroot>/make directory.
-
-# CGAL_MAKEFILE = ENTER_YOUR_INCLUDE_MAKEFILE_HERE
-include $(CGAL_MAKEFILE)
-
-#---------------------------------------------------------------------#
-#                    compiler flags
-#---------------------------------------------------------------------#
-
-CXXFLAGS = \
-           -I../../include \
-           $(TESTSUITE_CXXFLAGS) \
-           $(EXTRA_FLAGS) \
-           $(CGAL_CXXFLAGS) \
-           $(LONG_NAME_PROBLEM_CXXFLAGS)
-
-#---------------------------------------------------------------------#
-#                    linker flags
-#---------------------------------------------------------------------#
-
-LIBPATH = \
-          $(TESTSUITE_LIBPATH) \
-          $(CGAL_LIBPATH)
-
-LDFLAGS = \
-          $(TESTSUITE_LDFLAGS) \
-          $(LONG_NAME_PROBLEM_LDFLAGS) \
-          $(CGAL_LDFLAGS)
-
-#---------------------------------------------------------------------#
-#                    target entries
-#---------------------------------------------------------------------#
-
-all:            \
-	Create_straight_skeleton_2$(EXE_EXT) \
-	Create_straight_skeleton_from_polygon_with_holes_2$(EXE_EXT) \
-	Create_offset_polygons_2$(EXE_EXT) \
-	Create_skeleton_and_offset_polygons_2$(EXE_EXT) \
-	Create_skeleton_and_offset_polygons_from_polygon_with_holes_2$(EXE_EXT) \
-	Create_skeleton_and_offset_polygons_with_holes_2$(EXE_EXT) \
-	Low_level_API$(EXE_EXT) 
-
-Create_straight_skeleton_2$(EXE_EXT): Create_straight_skeleton_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_straight_skeleton_2$(EXE_EXT) Create_straight_skeleton_2$(OBJ_EXT) $(LDFLAGS)
-
-Create_straight_skeleton_from_polygon_with_holes_2$(EXE_EXT): Create_straight_skeleton_from_polygon_with_holes_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_straight_skeleton_from_polygon_with_holes_2$(EXE_EXT) Create_straight_skeleton_from_polygon_with_holes_2$(OBJ_EXT) $(LDFLAGS)
-
-Create_polygon_offset_2$(EXE_EXT): Create_polygon_offset_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_polygon_offset_2$(EXE_EXT) Create_polygon_offset_2$(OBJ_EXT) $(LDFLAGS)
-
-Create_skeleton_and_offset_polygons_2$(EXE_EXT): Create_skeleton_and_offset_polygons_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_skeleton_and_offset_polygons_2$(EXE_EXT) Create_skeleton_and_offset_polygons_2$(OBJ_EXT) $(LDFLAGS)
-
-Create_skeleton_and_offset_polygons_from_polygon_with_holes_2$(EXE_EXT): Create_skeleton_and_offset_polygons_from_polygon_with_holes_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_skeleton_and_offset_polygons_from_polygon_with_holes_2$(EXE_EXT) Create_skeleton_and_offset_polygons_from_polygon_with_holes_2$(OBJ_EXT) $(LDFLAGS)
-
-Create_skeleton_and_offset_polygons_with_holes_2$(EXE_EXT): Create_skeleton_and_offset_polygons_with_holes_2$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Create_skeleton_and_offset_polygons_with_holes_2$(EXE_EXT) Create_skeleton_and_offset_polygons_with_holes_2$(OBJ_EXT) $(LDFLAGS)
-
-Low_level_API$(EXE_EXT): Low_level_API$(OBJ_EXT)
-	$(CGAL_CXX) $(LIBPATH) $(EXE_OPT)Low_level_API$(EXE_EXT) Low_level_API$(OBJ_EXT) $(LDFLAGS)
-
-clean: \
-	Create_straight_skeleton_2.clean \
-	Create_straight_skeleton_from_polygon_with_holes_2.clean \
-	Create_offset_polygons_2.clean \
-	Create_skeleton_and_offset_polygons_2.clean \
-	Create_skeleton_and_offset_polygons_from_polygon_with_holes_2.clean \
-	Create_skeleton_and_offset_polygons_with_holes_2.clean \
-	Low_level_API.clean 
-
-#---------------------------------------------------------------------#
-#                    suffix rules
-#---------------------------------------------------------------------#
-
-.cpp$(OBJ_EXT):
-	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) $<
-