diff --git a/APP_Framework/Applications/general_functions/SConscript b/APP_Framework/Applications/general_functions/SConscript
new file mode 100644
index 00000000..f307e3f7
--- /dev/null
+++ b/APP_Framework/Applications/general_functions/SConscript
@@ -0,0 +1,14 @@
+import os
+Import('RTT_ROOT')
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(path, 'SConscript'))
+
+Return('objs')
diff --git a/APP_Framework/Applications/general_functions/list/SConscript b/APP_Framework/Applications/general_functions/list/SConscript
new file mode 100644
index 00000000..e1ff73e1
--- /dev/null
+++ b/APP_Framework/Applications/general_functions/list/SConscript
@@ -0,0 +1,11 @@
+import os
+from building import * 
+Import('RTT_ROOT')
+Import('rtconfig')
+cwd = GetCurrentDir()
+DEPENDS = [""]
+
+SOURCES = ['double_list.c'] + ['single_list.c']
+path =  [cwd]
+objs = DefineGroup('list', src = SOURCES, depend = DEPENDS,CPPPATH = path) 
+Return("objs") 
\ No newline at end of file
diff --git a/APP_Framework/Applications/general_functions/list/list.h b/APP_Framework/Applications/general_functions/list/list.h
index ebc0c9c1..3eeca237 100644
--- a/APP_Framework/Applications/general_functions/list/list.h
+++ b/APP_Framework/Applications/general_functions/list/list.h
@@ -23,7 +23,7 @@
 #define __LIST_H__
 
 #include "libc.h"
-
+#include<stddef.h>
 #ifdef __cplusplus
 extern "C" {
 #endif