diff --git a/tools/building.py b/tools/building.py
index f59d856bd4d947c0a6f99303206007b6aadfbbf8..247cf0c9ff88040150f3bab5e0b53db69e249547 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -136,6 +136,13 @@ def PrepareModuleBuilding(env, root_directory):
     # add program path
     env.PrependENVPath('PATH', rtconfig.EXEC_PATH)
 
+def GetConfigValue(name):
+    assert type(name) == str, 'GetConfigValue: only string parameter is valid'
+    try:
+        return BuildOptions[name]
+    except:
+        return ''
+
 def GetDepend(depend):
     building = True
     if type(depend) == type('str'):