diff --git a/tools/building.py b/tools/building.py
index 026e61afb846b0139a4a95d790d515539365b147..01ca5b12407a8e26c5db3c965668f1ec48af9dd2 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -344,6 +344,8 @@ def DefineGroup(name, src, depend, **parameters):
         Env.Append(LINKFLAGS = group['LINKFLAGS'])
 
     objs = Env.Object(group['src'])
+    objs = Env.Library(name, objs)
+    
     return objs
 
 def EndBuilding(target):