diff --git a/poky/bitbake/lib/bb/runqueue.py b/poky/bitbake/lib/bb/runqueue.py
index 383c183..329cda3 100644
--- a/poky/bitbake/lib/bb/runqueue.py
+++ b/poky/bitbake/lib/bb/runqueue.py
@@ -37,11 +37,12 @@
 import subprocess
 import pickle
 from multiprocessing import Process
+import shlex
 
 bblogger = logging.getLogger("BitBake")
 logger = logging.getLogger("BitBake.RunQueue")
 
-__find_md5__ = re.compile( r'(?i)(?<![a-z0-9])[a-f0-9]{32}(?![a-z0-9])' )
+__find_sha256__ = re.compile( r'(?i)(?<![a-z0-9])[a-f0-9]{64}(?![a-z0-9])' )
 
 def fn_from_tid(tid):
      return tid.rsplit(":", 1)[0]
@@ -351,6 +352,7 @@
         self.depends = set()
         self.revdeps = set()
         self.hash = None
+        self.unihash = None
         self.task = None
         self.weight = 1
 
@@ -390,6 +392,9 @@
     def get_task_hash(self, tid):
         return self.runtaskentries[tid].hash
 
+    def get_task_unihash(self, tid):
+        return self.runtaskentries[tid].unihash
+
     def get_user_idstring(self, tid, task_name_suffix = ""):
         return tid + task_name_suffix
 
@@ -1161,18 +1166,21 @@
                 if len(self.runtaskentries[tid].depends - dealtwith) == 0:
                     dealtwith.add(tid)
                     todeal.remove(tid)
-                    procdep = []
-                    for dep in self.runtaskentries[tid].depends:
-                        procdep.append(fn_from_tid(dep) + "." + taskname_from_tid(dep))
-                    (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
-                    self.runtaskentries[tid].hash = bb.parse.siggen.get_taskhash(taskfn, taskname, procdep, self.dataCaches[mc])
-                    task = self.runtaskentries[tid].task
+                    self.prepare_task_hash(tid)
 
         bb.parse.siggen.writeout_file_checksum_cache()
 
         #self.dump_data()
         return len(self.runtaskentries)
 
+    def prepare_task_hash(self, tid):
+        procdep = []
+        for dep in self.runtaskentries[tid].depends:
+            procdep.append(fn_from_tid(dep) + "." + taskname_from_tid(dep))
+        (mc, fn, taskname, taskfn) = split_tid_mcfn(tid)
+        self.runtaskentries[tid].hash = bb.parse.siggen.get_taskhash(taskfn, taskname, procdep, self.dataCaches[mc])
+        self.runtaskentries[tid].unihash = bb.parse.siggen.get_unihash(taskfn + "." + taskname)
+
     def dump_data(self):
         """
         Dump some debug information on the internal data structures
@@ -1224,28 +1232,23 @@
         if fakeroot:
             magic = magic + "beef"
             mcdata = self.cooker.databuilder.mcdata[mc]
-            fakerootcmd = mcdata.getVar("FAKEROOTCMD")
+            fakerootcmd = shlex.split(mcdata.getVar("FAKEROOTCMD"))
             fakerootenv = (mcdata.getVar("FAKEROOTBASEENV") or "").split()
             env = os.environ.copy()
             for key, value in (var.split('=') for var in fakerootenv):
                 env[key] = value
-            worker = subprocess.Popen([fakerootcmd, "bitbake-worker", magic], stdout=subprocess.PIPE, stdin=subprocess.PIPE, env=env)
+            worker = subprocess.Popen(fakerootcmd + ["bitbake-worker", magic], stdout=subprocess.PIPE, stdin=subprocess.PIPE, env=env)
         else:
             worker = subprocess.Popen(["bitbake-worker", magic], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
         bb.utils.nonblockingfd(worker.stdout)
         workerpipe = runQueuePipe(worker.stdout, None, self.cfgData, self, rqexec)
 
-        runqhash = {}
-        for tid in self.rqdata.runtaskentries:
-            runqhash[tid] = self.rqdata.runtaskentries[tid].hash
-
         workerdata = {
             "taskdeps" : self.rqdata.dataCaches[mc].task_deps,
             "fakerootenv" : self.rqdata.dataCaches[mc].fakerootenv,
             "fakerootdirs" : self.rqdata.dataCaches[mc].fakerootdirs,
             "fakerootnoenv" : self.rqdata.dataCaches[mc].fakerootnoenv,
             "sigdata" : bb.parse.siggen.get_taskdata(),
-            "runq_hash" : runqhash,
             "logdefaultdebug" : bb.msg.loggerDefaultDebugLevel,
             "logdefaultverbose" : bb.msg.loggerDefaultVerbose,
             "logdefaultverboselogs" : bb.msg.loggerVerboseLogs,
@@ -1387,6 +1390,26 @@
             cache[tid] = iscurrent
         return iscurrent
 
+    def validate_hash(self, *, sq_fn, sq_task, sq_hash, sq_hashfn, siginfo, sq_unihash, d):
+        locs = {"sq_fn" : sq_fn, "sq_task" : sq_task, "sq_hash" : sq_hash, "sq_hashfn" : sq_hashfn,
+                "sq_unihash" : sq_unihash, "siginfo" : siginfo, "d" : d}
+
+        hashvalidate_args = ("(sq_fn, sq_task, sq_hash, sq_hashfn, d, siginfo=siginfo, sq_unihash=sq_unihash)",
+                             "(sq_fn, sq_task, sq_hash, sq_hashfn, d, siginfo=siginfo)",
+                             "(sq_fn, sq_task, sq_hash, sq_hashfn, d)")
+
+        for args in hashvalidate_args[:-1]:
+            try:
+                call = self.hashvalidate + args
+                return bb.utils.better_eval(call, locs)
+            except TypeError:
+                continue
+
+        # Call the last entry without a try...catch to propagate any thrown
+        # TypeError
+        call = self.hashvalidate + hashvalidate_args[-1]
+        return bb.utils.better_eval(call, locs)
+
     def _execute_runqueue(self):
         """
         Run the tasks in a queue prepared by rqdata.prepare()
@@ -1558,6 +1581,7 @@
         valid = []
         sq_hash = []
         sq_hashfn = []
+        sq_unihash = []
         sq_fn = []
         sq_taskname = []
         sq_task = []
@@ -1576,16 +1600,13 @@
             sq_fn.append(fn)
             sq_hashfn.append(self.rqdata.dataCaches[mc].hashfn[taskfn])
             sq_hash.append(self.rqdata.runtaskentries[tid].hash)
+            sq_unihash.append(self.rqdata.runtaskentries[tid].unihash)
             sq_taskname.append(taskname)
             sq_task.append(tid)
-        locs = { "sq_fn" : sq_fn, "sq_task" : sq_taskname, "sq_hash" : sq_hash, "sq_hashfn" : sq_hashfn, "d" : self.cooker.data }
-        try:
-            call = self.hashvalidate + "(sq_fn, sq_task, sq_hash, sq_hashfn, d, siginfo=True)"
-            valid = bb.utils.better_eval(call, locs)
-        # Handle version with no siginfo parameter
-        except TypeError:
-            call = self.hashvalidate + "(sq_fn, sq_task, sq_hash, sq_hashfn, d)"
-            valid = bb.utils.better_eval(call, locs)
+
+        valid = self.validate_hash(sq_fn=sq_fn, sq_task=sq_taskname, sq_hash=sq_hash, sq_hashfn=sq_hashfn,
+                siginfo=True, sq_unihash=sq_unihash, d=self.cooker.data)
+
         for v in valid:
             valid_new.add(sq_task[v])
 
@@ -1667,7 +1688,7 @@
             matches = {k : v for k, v in iter(matches.items()) if h not in k}
             if matches:
                 latestmatch = sorted(matches.keys(), key=lambda f: matches[f])[-1]
-                prevh = __find_md5__.search(latestmatch).group(0)
+                prevh = __find_sha256__.search(latestmatch).group(0)
                 output = bb.siggen.compare_sigfiles(latestmatch, match, recursecb)
                 bb.plain("\nTask %s:%s couldn't be used from the cache because:\n  We need hash %s, closest matching task was %s\n  " % (pn, taskname, h, prevh) + '\n  '.join(output))
 
@@ -2042,6 +2063,8 @@
             taskdepdata = self.build_taskdepdata(task)
 
             taskdep = self.rqdata.dataCaches[mc].task_deps[taskfn]
+            taskhash = self.rqdata.get_task_hash(task)
+            unihash = self.rqdata.get_task_unihash(task)
             if 'fakeroot' in taskdep and taskname in taskdep['fakeroot'] and not (self.cooker.configuration.dry_run or self.rqdata.setscene_enforce):
                 if not mc in self.rq.fakeworker:
                     try:
@@ -2051,10 +2074,10 @@
                         self.rq.state = runQueueFailed
                         self.stats.taskFailed()
                         return True
-                self.rq.fakeworker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, False, self.cooker.collection.get_file_appends(taskfn), taskdepdata, self.rqdata.setscene_enforce)) + b"</runtask>")
+                self.rq.fakeworker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, taskhash, unihash, False, self.cooker.collection.get_file_appends(taskfn), taskdepdata, self.rqdata.setscene_enforce)) + b"</runtask>")
                 self.rq.fakeworker[mc].process.stdin.flush()
             else:
-                self.rq.worker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, False, self.cooker.collection.get_file_appends(taskfn), taskdepdata, self.rqdata.setscene_enforce)) + b"</runtask>")
+                self.rq.worker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, taskhash, unihash, False, self.cooker.collection.get_file_appends(taskfn), taskdepdata, self.rqdata.setscene_enforce)) + b"</runtask>")
                 self.rq.worker[mc].process.stdin.flush()
 
             self.build_stamps[task] = bb.build.stampfile(taskname, self.rqdata.dataCaches[mc], taskfn, noextra=True)
@@ -2109,8 +2132,9 @@
                 deps = self.rqdata.runtaskentries[revdep].depends
                 provides = self.rqdata.dataCaches[mc].fn_provides[taskfn]
                 taskhash = self.rqdata.runtaskentries[revdep].hash
-                taskdepdata[revdep] = [pn, taskname, fn, deps, provides, taskhash]
+                unihash = self.rqdata.runtaskentries[revdep].unihash
                 deps = self.filtermcdeps(task, deps)
+                taskdepdata[revdep] = [pn, taskname, fn, deps, provides, taskhash, unihash]
                 for revdep2 in deps:
                     if revdep2 not in taskdepdata:
                         additional.append(revdep2)
@@ -2313,6 +2337,7 @@
         if self.rq.hashvalidate:
             sq_hash = []
             sq_hashfn = []
+            sq_unihash = []
             sq_fn = []
             sq_taskname = []
             sq_task = []
@@ -2344,14 +2369,14 @@
                 sq_fn.append(fn)
                 sq_hashfn.append(self.rqdata.dataCaches[mc].hashfn[taskfn])
                 sq_hash.append(self.rqdata.runtaskentries[tid].hash)
+                sq_unihash.append(self.rqdata.runtaskentries[tid].unihash)
                 sq_taskname.append(taskname)
                 sq_task.append(tid)
 
             self.cooker.data.setVar("BB_SETSCENE_STAMPCURRENT_COUNT", len(stamppresent))
 
-            call = self.rq.hashvalidate + "(sq_fn, sq_task, sq_hash, sq_hashfn, d)"
-            locs = { "sq_fn" : sq_fn, "sq_task" : sq_taskname, "sq_hash" : sq_hash, "sq_hashfn" : sq_hashfn, "d" : self.cooker.data }
-            valid = bb.utils.better_eval(call, locs)
+            valid = self.rq.validate_hash(sq_fn=sq_fn, sq_task=sq_taskname, sq_hash=sq_hash, sq_hashfn=sq_hashfn,
+                    siginfo=False, sq_unihash=sq_unihash, d=self.cooker.data)
 
             self.cooker.data.delVar("BB_SETSCENE_STAMPCURRENT_COUNT")
 
@@ -2482,13 +2507,15 @@
             taskdepdata = self.build_taskdepdata(task)
 
             taskdep = self.rqdata.dataCaches[mc].task_deps[taskfn]
+            taskhash = self.rqdata.get_task_hash(task)
+            unihash = self.rqdata.get_task_unihash(task)
             if 'fakeroot' in taskdep and taskname in taskdep['fakeroot'] and not self.cooker.configuration.dry_run:
                 if not mc in self.rq.fakeworker:
                     self.rq.start_fakeworker(self, mc)
-                self.rq.fakeworker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, True, self.cooker.collection.get_file_appends(taskfn), taskdepdata, False)) + b"</runtask>")
+                self.rq.fakeworker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, taskhash, unihash, True, self.cooker.collection.get_file_appends(taskfn), taskdepdata, False)) + b"</runtask>")
                 self.rq.fakeworker[mc].process.stdin.flush()
             else:
-                self.rq.worker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, True, self.cooker.collection.get_file_appends(taskfn), taskdepdata, False)) + b"</runtask>")
+                self.rq.worker[mc].process.stdin.write(b"<runtask>" + pickle.dumps((taskfn, task, taskname, taskhash, unihash, True, self.cooker.collection.get_file_appends(taskfn), taskdepdata, False)) + b"</runtask>")
                 self.rq.worker[mc].process.stdin.flush()
 
             self.build_stamps[task] = bb.build.stampfile(taskname, self.rqdata.dataCaches[mc], taskfn, noextra=True)
@@ -2552,7 +2579,8 @@
                 deps = getsetscenedeps(revdep)
                 provides = self.rqdata.dataCaches[mc].fn_provides[taskfn]
                 taskhash = self.rqdata.runtaskentries[revdep].hash
-                taskdepdata[revdep] = [pn, taskname, fn, deps, provides, taskhash]
+                unihash = self.rqdata.runtaskentries[revdep].unihash
+                taskdepdata[revdep] = [pn, taskname, fn, deps, provides, taskhash, unihash]
                 for revdep2 in deps:
                     if revdep2 not in taskdepdata:
                         additional.append(revdep2)