diff --git a/bsp/simulator/SConstruct b/bsp/simulator/SConstruct
index 875bef1e3a14473a0e4f91874338750435e3c1c1..6f35921ba9e66a2d34c016433b0bbad819d26bb0 100755
--- a/bsp/simulator/SConstruct
+++ b/bsp/simulator/SConstruct
@@ -106,8 +106,45 @@ if GetDepend('RT_USING_RTGUI'):
 if GetDepend('RT_USING_TC'):
     objs = objs + SConscript(RTT_ROOT + '/examples/kernel/SConscript', variant_dir = 'build/tc/kernel', duplicate=0)
 
-# build program 
-program = env.Program(TARGET, objs)
+def ObjRemove(objs, remove):
+    for item in objs:
+        # print type(item), os.path.basename(str(item))
+        if os.path.basename(str(item)) in remove:
+             objs.remove(item)
+    return
+
+# build program  -shared
+if GetDepend('RT_USING_MODULE'):
+    # Remove module.c in $RTT_ROOT/src
+    ObjRemove(objs, ['module.obj', 'module.o'])
+
+    AddOption('--def',
+      dest='def',
+      nargs=1, type='string',
+      action='store',
+      metavar='DIR',
+      help='installation prefix')
+    res = GetOption('def')
+    if res is None:
+        program = env.Program(TARGET, objs)
+    elif res == 'update':
+        env['LINKFLAGS'] = rtconfig.DEFFILE_LFLAGS
+        env.SharedLibrary("rtthread.dll", objs)
+        program = ''
+    elif res == 'yes':
+        if rtconfig.PLATFORM == 'cl':
+            objs += ['rtthread.def']
+        env.SharedLibrary("rtthread.dll", objs)
+        program = env.Program(TARGET, 'dummy.c', LIBS='rtthread', LIBPATH='.')
+    else:
+        print "bad arguments, you can use the following command:"
+        print "\t --def=update to create .def"
+        print "\t --def=yes to create final exe"
+        exit()
+
+else:
+    # env.SharedLibrary("rtthread.dll", objs)
+    program = env.Program(TARGET, objs)
 
 # end building
 EndBuilding(TARGET, program)
diff --git a/bsp/simulator/applications/SConscript b/bsp/simulator/applications/SConscript
index 828b49f77f9592fe37e67b2e40016d20e64062bf..6dbd985812698abb936ebfcb0f686a868e348e2d 100644
--- a/bsp/simulator/applications/SConscript
+++ b/bsp/simulator/applications/SConscript
@@ -6,6 +6,8 @@ src	= Glob('*.c')
 # remove no need file.
 if GetDepend('RT_USING_DFS_WINSHAREDIR') == False:
     SrcRemove(src, 'dfs_win32.c')
+if GetDepend('RT_USING_MODULE') == False:
+    SrcRemove(src, ['module_win32.c'])
 CPPPATH = [cwd, str(Dir('#'))]
 
 group = DefineGroup('Applications', src, depend = [''], CPPPATH = CPPPATH)
diff --git a/bsp/simulator/applications/dfs_win32.c b/bsp/simulator/applications/dfs_win32.c
index acc8a3cb0ab95b80ba360a075fe24f09bdd25f7a..8601df7239cbde0156e21dbdeba8737f0a2f0670 100644
--- a/bsp/simulator/applications/dfs_win32.c
+++ b/bsp/simulator/applications/dfs_win32.c
@@ -148,6 +148,14 @@ static char *winpath_dirdup(char *des, const char *src)
     return path;
 }
 
+/* This function can convert the path in rt-thread/dfs to the path in windows */
+char * dfs_win32_dirdup(char * path)
+{
+    char * file_path;
+    file_path = winpath_dirdup(WIN32_DIRDISK_ROOT, path);
+    return file_path;
+}
+
 static int dfs_win32_open(struct dfs_fd *file)
 {
     int fd;
diff --git a/bsp/simulator/dummy.c b/bsp/simulator/dummy.c
new file mode 100644
index 0000000000000000000000000000000000000000..67a38866cbc00b536b45ba5e872df995fffac966
--- /dev/null
+++ b/bsp/simulator/dummy.c
@@ -0,0 +1,4 @@
+int dummy_main()
+{
+	return 0;
+}
diff --git a/bsp/simulator/rtconfig.h b/bsp/simulator/rtconfig.h
index d37e3877b88eccd2cf0addf6f9459975bc3c0b5e..5e0f9ead12fa8d3a5d26f75de135a426d90f36e3 100755
--- a/bsp/simulator/rtconfig.h
+++ b/bsp/simulator/rtconfig.h
@@ -99,6 +99,9 @@
 /* SECTION: component options */
 #define RT_USING_COMPONENTS_INIT
 
+/* SECTION: APP MODULE  */
+#define RT_USING_MODULE
+
 /* SECTION: MTD interface options */
 /* using mtd nand flash */
 #define RT_USING_MTD_NAND
diff --git a/bsp/simulator/rtconfig.py b/bsp/simulator/rtconfig.py
index 3d0c641ef653624ee0ee62b829deb36279e0b815..2b396c5455f3eb3b9ceaeceb755de0bb3bc6926c 100755
--- a/bsp/simulator/rtconfig.py
+++ b/bsp/simulator/rtconfig.py
@@ -71,10 +71,10 @@ elif PLATFORM == 'mingw':
 
     DEVICE = ' -ffunction-sections -fdata-sections'
     DEVICE = '  '
-    CFLAGS = ' -Wl,--output-def '
+    CFLAGS = DEVICE
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
-    #LFLAGS = DEVICE + ' -Wl,-Map=rtthread-win32.map -T mingw.ld'
-    LFLAGS = DEVICE + ' -Wl,-Map=rtthread-win32.map --gc-sections,--whole-archive -T mingw.ld '
+    DEFFILE_LFLAGS = DEVICE + ' -Wl,-Map=rtthread-win32.map,--output-def,rtthread.def -T mingw.ld '
+    LFLAGS = DEVICE + ' -Wl,-Map=rtthread-win32.map -T mingw.ld '
     CPATH = ''
     LPATH = ''
 
diff --git a/include/rtm.h b/include/rtm.h
index 92ba6a381ab77635817432abe9cf69ce2a646d6d..4bf7951a90b9dfc5e48dbc2a76dec723eb9b4faa 100644
--- a/include/rtm.h
+++ b/include/rtm.h
@@ -21,6 +21,9 @@ struct rt_module_symtab
     const char *name;
 };
 
+#if defined(_MSC_VER) || defined(__MINGW32__)
+#define RTM_EXPORT(symbol)
+#else
 #define RTM_EXPORT(symbol)                                            \
 const char __rtmsym_##symbol##_name[] = #symbol;                      \
 const struct rt_module_symtab __rtmsym_##symbol SECTION("RTMSymTab")= \
@@ -28,6 +31,8 @@ const struct rt_module_symtab __rtmsym_##symbol SECTION("RTMSymTab")= \
     (void *)&symbol,                                                  \
     __rtmsym_##symbol##_name                                          \
 };
+#endif
+
 #else
 #define RTM_EXPORT(symbol)
 #endif