diff --git a/tools/building.py b/tools/building.py
index e9a59a9a4e..c56ac97491 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -782,6 +782,7 @@ def DoBuilding(target, objects):
 
         return False
 
+    PreBuilding()
     objects = one_list(objects)
 
     program = None