diff --git a/poky/bitbake/lib/bb/checksum.py b/poky/bitbake/lib/bb/checksum.py
index 5bc8a8f..1d50a26 100644
--- a/poky/bitbake/lib/bb/checksum.py
+++ b/poky/bitbake/lib/bb/checksum.py
@@ -9,7 +9,6 @@
 import operator
 import os
 import stat
-import pickle
 import bb.utils
 import logging
 from bb.cache import MultiProcessCache
@@ -74,7 +73,7 @@
             else:
                 dest[0][h] = source[0][h]
 
-    def get_checksums(self, filelist, pn):
+    def get_checksums(self, filelist, pn, localdirsexclude):
         """Get checksums for a list of files"""
 
         def checksum_file(f):
@@ -90,7 +89,8 @@
             if pth == "/":
                 bb.fatal("Refusing to checksum /")
             dirchecksums = []
-            for root, dirs, files in os.walk(pth):
+            for root, dirs, files in os.walk(pth, topdown=True):
+                [dirs.remove(d) for d in list(dirs) if d in localdirsexclude]
                 for name in files:
                     fullpth = os.path.join(root, name)
                     checksum = checksum_file(fullpth)