2 files changed, 7 insertions, 4 deletions

diff --git a/bitbake/lib/bb/cookerdata.py b/bitbake/lib/bb/cookerdata.py
index 6200b0ebac..b9b9e16675 100644
--- a/bitbake/lib/bb/cookerdata.py
+++ b/bitbake/lib/bb/cookerdata.py
@@ -124,7 +124,7 @@ class CookerConfiguration(object):
         self.profile = False
         self.nosetscene = False
         self.invalidate_stamp = False
-        self.dump_signatures = False
+        self.dump_signatures = []
         self.dry_run = False
         self.tracking = False
         self.interface = []
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 90fe40b880..423b03c181 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -1036,10 +1036,13 @@ class RunQueue:
                     bb.event.fire(bb.event.DepTreeGenerated(depgraph), self.cooker.data)
 
         if self.state is runQueueSceneInit:
-            if self.cooker.configuration.dump_signatures:
-                invalidtasks = self.print_diffscenetasks()
+            dump = self.cooker.configuration.dump_signatures
+            if dump:
+                if 'printdiff' in dump:
+                    invalidtasks = self.print_diffscenetasks()
                 self.dump_signatures()
-                self.write_diffscenetasks(invalidtasks)
+                if 'printdiff' in dump:
+                    self.write_diffscenetasks(invalidtasks)
                 self.state = runQueueComplete
             else:
                 self.start_worker()