2 files changed, 21 insertions, 2 deletions

diff --git a/bitbake/bin/bitbake b/bitbake/bin/bitbake
index 478ac06124..f23673fdf8 100755
--- a/bitbake/bin/bitbake
+++ b/bitbake/bin/bitbake
@@ -118,6 +118,9 @@ Default BBFILES are the .bb files in the current directory.""")
     parser.add_option("-c", "--cmd", help = "Specify task to execute. Note that this only executes the specified task for the providee and the packages it depends on, i.e. 'compile' does not implicitly call stage for the dependencies (IOW: use only if you know what you are doing). Depending on the base.bbclass a listtasks tasks is defined and will show available tasks",
                action = "store", dest = "cmd")
 
+    parser.add_option("-C", "--clear-stamp", help = "Invalidate the specified stamp for a task such as 'compile' and run the default task for the specified target(s)",
+                action = "store", dest = "invalidate_stamp")
+
     parser.add_option("-r", "--read", help = "read the specified file before bitbake.conf",
                action = "append", dest = "prefile", default = [])
 
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 28eb072bee..608aff8ad7 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -705,11 +705,27 @@ class RunQueueData:
                 continue
             self.runq_setscene.append(task)
 
+        def invalidate_task(fn, taskname, error_nostamp):
+            taskdep = self.dataCache.task_deps[fn]
+            if 'nostamp' in taskdep and taskname in taskdep['nostamp']:
+                if error_nostamp:
+                    bb.fatal("Task %s is marked nostamp, cannot invalidate this task" % taskname)
+                else:
+                    bb.debug(1, "Task %s is marked nostamp, cannot invalidate this task" % taskname)
+            else:
+                logger.verbose("Invalidate task %s, %s", taskname, fn)
+                bb.parse.siggen.invalidate_task(taskname, self.dataCache, fn)
+
         # Invalidate task if force mode active
         if self.cooker.configuration.force:
             for (fn, target) in self.target_pairs:
-                logger.verbose("Invalidate task %s, %s", target, fn)
-                bb.parse.siggen.invalidate_task(target, self.dataCache, fn)
+                invalidate_task(fn, target, False)
+
+        # Invalidate task if invalidate mode active
+        if self.cooker.configuration.invalidate_stamp:
+            for (fn, target) in self.target_pairs:
+                for st in self.cooker.configuration.invalidate_stamp.split(','):
+                    invalidate_task(fn, "do_%s" % st, True)
 
         # Interate over the task list and call into the siggen code
         dealtwith = set()