diff --git a/meta/lib/buildstats.py b/meta/lib/buildstats.py
index fe801a28..1ffe6798 100644
--- a/meta/lib/buildstats.py
+++ b/meta/lib/buildstats.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
@@ -212,4 +212,4 @@ class SystemStats:
                      b'\n')
             self.last_disk_monitor = now
             retval = True
-        return retval
+        return retval
\ No newline at end of file
diff --git a/meta/lib/oe/classutils.py b/meta/lib/oe/classutils.py
index d879191d..ec3f6ad7 100644
--- a/meta/lib/oe/classutils.py
+++ b/meta/lib/oe/classutils.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/data.py b/meta/lib/oe/data.py
index b832e9b3..37121cfa 100644
--- a/meta/lib/oe/data.py
+++ b/meta/lib/oe/data.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/gpg_sign.py b/meta/lib/oe/gpg_sign.py
index 7a9cec94..ede6186c 100644
--- a/meta/lib/oe/gpg_sign.py
+++ b/meta/lib/oe/gpg_sign.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/maketype.py b/meta/lib/oe/maketype.py
index a9a1dd7b..7a83bdf6 100644
--- a/meta/lib/oe/maketype.py
+++ b/meta/lib/oe/maketype.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/patch.py b/meta/lib/oe/patch.py
index 35734a0d..60a0cc82 100644
--- a/meta/lib/oe/patch.py
+++ b/meta/lib/oe/patch.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/path.py b/meta/lib/oe/path.py
index 68dcb595..5d21cdcb 100644
--- a/meta/lib/oe/path.py
+++ b/meta/lib/oe/path.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/reproducible.py b/meta/lib/oe/reproducible.py
index 06a4b5fc..448befce 100644
--- a/meta/lib/oe/reproducible.py
+++ b/meta/lib/oe/reproducible.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/sstatesig.py b/meta/lib/oe/sstatesig.py
index 63202204..a46e5502 100644
--- a/meta/lib/oe/sstatesig.py
+++ b/meta/lib/oe/sstatesig.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/terminal.py b/meta/lib/oe/terminal.py
index 2ae7a45a..4412bc14 100644
--- a/meta/lib/oe/terminal.py
+++ b/meta/lib/oe/terminal.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/types.py b/meta/lib/oe/types.py
index 4927fbc5..b929afb1 100644
--- a/meta/lib/oe/types.py
+++ b/meta/lib/oe/types.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index 9455aadb..14a7d07e 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -1,5 +1,5 @@
 #
-# Imported from openembedded-core
+# Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: GPL-2.0-only
 #
@@ -7,6 +7,7 @@
 import subprocess
 import multiprocessing
 import traceback
+import errno
 
 def read_file(filename):
     try:
@@ -258,16 +259,23 @@ def execute_pre_post_process(d, cmds):
     if cmds is None:
         return
 
-    for cmd in cmds.strip().split(';'):
-        cmd = cmd.strip()
-        if cmd != '':
-            bb.note("Executing %s ..." % cmd)
-            bb.build.exec_func(cmd, d)
+    cmds = cmds.replace(";", " ")
 
-# For each item in items, call the function 'target' with item as the first 
+    for cmd in cmds.split():
+        bb.note("Executing %s ..." % cmd)
+        bb.build.exec_func(cmd, d)
+
+def get_bb_number_threads(d):
+    return int(d.getVar("BB_NUMBER_THREADS") or os.cpu_count() or 1)
+
+def multiprocess_launch(target, items, d, extraargs=None):
+    max_process = get_bb_number_threads(d)
+    return multiprocess_launch_mp(target, items, max_process, extraargs)
+
+# For each item in items, call the function 'target' with item as the first
 # argument, extraargs as the other arguments and handle any exceptions in the
 # parent thread
-def multiprocess_launch(target, items, d, extraargs=None):
+def multiprocess_launch_mp(target, items, max_process, extraargs=None):
 
     class ProcessLaunch(multiprocessing.Process):
         def __init__(self, *args, **kwargs):
@@ -302,7 +310,6 @@ def multiprocess_launch(target, items, d, extraargs=None):
             self.update()
             return self._result
 
-    max_process = int(d.getVar("BB_NUMBER_THREADS") or os.cpu_count() or 1)
     launched = []
     errors = []
     results = []
@@ -475,70 +482,6 @@ def get_multilib_datastore(variant, d):
         localdata.setVar("MLPREFIX", "")
     return localdata
 
-#
-# Python 2.7 doesn't have threaded pools (just multiprocessing)
-# so implement a version here
-#
-
-from queue import Queue
-from threading import Thread
-
-class ThreadedWorker(Thread):
-    """Thread executing tasks from a given tasks queue"""
-    def __init__(self, tasks, worker_init, worker_end, name=None):
-        Thread.__init__(self, name=name)
-        self.tasks = tasks
-        self.daemon = True
-
-        self.worker_init = worker_init
-        self.worker_end = worker_end
-
-    def run(self):
-        from queue import Empty
-
-        if self.worker_init is not None:
-            self.worker_init(self)
-
-        while True:
-            try:
-                func, args, kargs = self.tasks.get(block=False)
-            except Empty:
-                if self.worker_end is not None:
-                    self.worker_end(self)
-                break
-
-            try:
-                func(self, *args, **kargs)
-            except Exception as e:
-                # Eat all exceptions
-                bb.mainlogger.debug("Worker task raised %s" % e, exc_info=e)
-            finally:
-                self.tasks.task_done()
-
-class ThreadedPool:
-    """Pool of threads consuming tasks from a queue"""
-    def __init__(self, num_workers, num_tasks, worker_init=None, worker_end=None, name="ThreadedPool-"):
-        self.tasks = Queue(num_tasks)
-        self.workers = []
-
-        for i in range(num_workers):
-            worker = ThreadedWorker(self.tasks, worker_init, worker_end, name=name + str(i))
-            self.workers.append(worker)
-
-    def start(self):
-        for worker in self.workers:
-            worker.start()
-
-    def add_task(self, func, *args, **kargs):
-        """Add a task to the queue"""
-        self.tasks.put((func, args, kargs))
-
-    def wait_completion(self):
-        """Wait for completion of all the tasks in the queue"""
-        self.tasks.join()
-        for worker in self.workers:
-            worker.join()
-
 class ImageQAFailed(Exception):
     def __init__(self, description, name=None, logfile=None):
         self.description = description
@@ -586,3 +529,14 @@ def directory_size(root, blocksize=4096):
         total += sum(roundup(getsize(os.path.join(root, name))) for name in files)
         total += roundup(getsize(root))
     return total
+
+# Update the mtime of a file, skip if permission/read-only issues
+def touch(filename):
+    try:
+        os.utime(filename, None)
+    except PermissionError:
+        pass
+    except OSError as e:
+        # Handle read-only file systems gracefully
+        if e.errno != errno.EROFS:
+            raise e