diff --git a/bsp/simulator/SConstruct b/bsp/simulator/SConstruct
index ae5bc8097..25ade0897 100644
--- a/bsp/simulator/SConstruct
+++ b/bsp/simulator/SConstruct
@@ -12,8 +12,8 @@ if os.getenv('RTT_RTGUI'):
 else:
     # set the rtgui root directory by hand
     # empty string means use the RTGUI in svn
-    # RTT_RTGUI = os.path.normpath(r'F:\Project\git\rt-gui\components\rtgui')
-    RTT_RTGUI =''
+    RTT_RTGUI = os.path.normpath(r'F:\Project\git\rt-gui\components\rtgui')
+    # RTT_RTGUI =''
 
 sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
 from building import *
@@ -76,7 +76,7 @@ if GetDepend('RT_USING_RTGUI'):
 				variant_dir='build/examples/gui', duplicate=0)
 
 # build program 
-env.Program(TARGET, objs)
+program = env.Program(TARGET, objs)
 
-# end building 
-EndBuilding(TARGET)
+# end building
+EndBuilding(TARGET, program)
diff --git a/bsp/simulator/drivers/SConscript b/bsp/simulator/drivers/SConscript
index e97a5018a..d131ce7f4 100644
--- a/bsp/simulator/drivers/SConscript
+++ b/bsp/simulator/drivers/SConscript
@@ -8,9 +8,9 @@ if GetDepend('RT_USING_RTGUI') == False:
     SrcRemove(src, 'sdl_fb.c')
 if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_ELMFAT') == False:
     SrcRemove(src, 'sd_sim.c')
-if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_UFFS') == False:
+if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_MTD_NAND') == False:
     SrcRemove(src, 'nand_sim.c')
-if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_JFFS2') == False:
+if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_MTD_NOR') == False:
     SrcRemove(src, 'sst25vfxx_mtd_sim.c')
 
 CPPPATH = [cwd]
diff --git a/bsp/simulator/snake/SConscript b/bsp/simulator/snake/SConscript
index e97a5018a..a5734dc40 100644
--- a/bsp/simulator/snake/SConscript
+++ b/bsp/simulator/snake/SConscript
@@ -1,20 +1,10 @@
-from building import *
-
-cwd = GetCurrentDir()
-src = Glob('*.c')
-
-# remove no need file.
-if GetDepend('RT_USING_RTGUI') == False:
-    SrcRemove(src, 'sdl_fb.c')
-if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_ELMFAT') == False:
-    SrcRemove(src, 'sd_sim.c')
-if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_UFFS') == False:
-    SrcRemove(src, 'nand_sim.c')
-if GetDepend('RT_USING_DFS') == False or GetDepend('RT_USING_DFS_JFFS2') == False:
-    SrcRemove(src, 'sst25vfxx_mtd_sim.c')
-
-CPPPATH = [cwd]
-
-group = DefineGroup('Drivers', src, depend = [''], CPPPATH = CPPPATH)
-
-Return('group')
+import rtconfig
+from building import *
+
+src = Glob('*.c') + Glob('*.cpp')
+cwd = GetCurrentDir()
+
+CPPPATH = [cwd]
+group = DefineGroup('snake', src, depend = ['RT_USING_RTGUI'], CPPPATH=CPPPATH)
+
+Return('group')