Use LC_COLLATE to unify the order of the packages list.

.travis.yml

@@ -9,10 +9,10 @@ env:
     - PACKAGE='AABB_tree Advancing_front_surface_reconstruction Algebraic_foundations '
     - PACKAGE='Algebraic_kernel_d Algebraic_kernel_for_circles Algebraic_kernel_for_spheres '
     - PACKAGE='Alpha_shapes_2 Alpha_shapes_3 Apollonius_graph_2 '
-    - PACKAGE='Arithmetic_kernel Arrangement_on_surface_2 Barycentric_coordinates_2 '
-    - PACKAGE='BGL Boolean_set_operations_2 Bounding_volumes '
-    - PACKAGE='Box_intersection_d Cartesian_kernel CGAL_Core '
-    - PACKAGE='CGAL_ImageIO CGAL_ipelets Circular_kernel_2 '
+    - PACKAGE='Arithmetic_kernel Arrangement_on_surface_2 BGL '
+    - PACKAGE='Barycentric_coordinates_2 Boolean_set_operations_2 Bounding_volumes '
+    - PACKAGE='Box_intersection_d CGAL_Core CGAL_ImageIO '
+    - PACKAGE='CGAL_ipelets Cartesian_kernel Circular_kernel_2 '
     - PACKAGE='Circular_kernel_3 Circulator Classification '
     - PACKAGE='Combinatorial_map Cone_spanners_2 Convex_decomposition_3 '
     - PACKAGE='Convex_hull_2 Convex_hull_3 Convex_hull_d '
@@ -38,16 +38,16 @@ env:
     - PACKAGE='Polyhedron_IO Polyline_simplification_2 Polynomial '
     - PACKAGE='Polytope_distance_d Principal_component_analysis Principal_component_analysis_LGPL '
     - PACKAGE='Profiling_tools Property_map QP_solver '
-    - PACKAGE='Random_numbers Ridges_3 Scale_space_reconstruction_3 '
-    - PACKAGE='Scripts SearchStructures Segment_Delaunay_graph_2 '
-    - PACKAGE='Segment_Delaunay_graph_Linf_2 Set_movable_separability_2 Shape_detection '
-    - PACKAGE='Skin_surface_3 Snap_rounding_2 Solver_interface '
-    - PACKAGE='Spatial_searching Spatial_sorting STL_Extension '
+    - PACKAGE='Random_numbers Ridges_3 STL_Extension '
+    - PACKAGE='Scale_space_reconstruction_3 Scripts SearchStructures '
+    - PACKAGE='Segment_Delaunay_graph_2 Segment_Delaunay_graph_Linf_2 Set_movable_separability_2 '
+    - PACKAGE='Shape_detection Skin_surface_3 Snap_rounding_2 '
+    - PACKAGE='Solver_interface Spatial_searching Spatial_sorting '
     - PACKAGE='Straight_skeleton_2 Stream_lines_2 Stream_support '
     - PACKAGE='Subdivision_method_3 Surface_mesh Surface_mesh_approximation '
-    - PACKAGE='Surface_mesh_deformation Surface_mesher Surface_mesh_parameterization '
-    - PACKAGE='Surface_mesh_segmentation Surface_mesh_shortest_path Surface_mesh_simplification '
-    - PACKAGE='Surface_mesh_skeletonization Surface_sweep_2 TDS_2 '
+    - PACKAGE='Surface_mesh_deformation Surface_mesh_parameterization Surface_mesh_segmentation '
+    - PACKAGE='Surface_mesh_shortest_path Surface_mesh_simplification Surface_mesh_skeletonization '
+    - PACKAGE='Surface_mesher Surface_sweep_2 TDS_2 '
     - PACKAGE='TDS_3 Testsuite Three '
     - PACKAGE='Triangulation Triangulation_2 Triangulation_3 '
     - PACKAGE='Union_find Visibility_2 Voronoi_diagram_2 '

.travis/generate_travis.sh

@@ -21,16 +21,20 @@ for f in *
 do
   if [ -d  "$f/package_info/$f" ]
 	then
-		PACKAGES[$INDEX]+="$f "
+  	echo "$f " >> ./tmp.txt
+	fi
+done
+  	LC_COLLATE=C sort ./tmp.txt > ./.travis/packages.txt
+  	rm ./tmp.txt
+  	while read p; do
+  	PACKAGES[$INDEX]+="$p "
 		i=$[i+1]
 		if [ $i = 3 ]
 		then
 			i=0
  			INDEX=$[INDEX+1]
 		fi
-  	echo "$f " >> ./.travis/packages.txt
-	fi
-done
+done <./.travis/packages.txt
 if [ -f ".travis.yml" ] 
 then
   #copy the current .travis.yml for later check

.travis/packages.txt

@@ -9,15 +9,15 @@ Alpha_shapes_3
 Apollonius_graph_2 
 Arithmetic_kernel 
 Arrangement_on_surface_2 
-Barycentric_coordinates_2 
 BGL 
+Barycentric_coordinates_2 
 Boolean_set_operations_2 
 Bounding_volumes 
 Box_intersection_d 
-Cartesian_kernel 
 CGAL_Core 
 CGAL_ImageIO 
 CGAL_ipelets 
+Cartesian_kernel 
 Circular_kernel_2 
 Circular_kernel_3 
 Circulator 
@@ -96,6 +96,7 @@ Property_map
 QP_solver 
 Random_numbers 
 Ridges_3 
+STL_Extension 
 Scale_space_reconstruction_3 
 Scripts 
 SearchStructures 
@@ -108,7 +109,6 @@ Snap_rounding_2
 Solver_interface 
 Spatial_searching 
 Spatial_sorting 
-STL_Extension 
 Straight_skeleton_2 
 Stream_lines_2 
 Stream_support 
@@ -116,12 +116,12 @@ Subdivision_method_3
 Surface_mesh 
 Surface_mesh_approximation 
 Surface_mesh_deformation 
-Surface_mesher 
 Surface_mesh_parameterization 
 Surface_mesh_segmentation 
 Surface_mesh_shortest_path 
 Surface_mesh_simplification 
 Surface_mesh_skeletonization 
+Surface_mesher 
 Surface_sweep_2 
 TDS_2 
 TDS_3