74 files changed, 163 insertions, 1 deletions
diff --git a/bitbake/lib/bb/__init__.py b/bitbake/lib/bb/__init__.py
index 8d0cef0d69..b013cbb896 100644
--- a/bitbake/lib/bb/__init__.py
+++ b/bitbake/lib/bb/__init__.py
@@ -8,6 +8,8 @@
 #
 # Based on Gentoo's portage.py.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/build.py b/bitbake/lib/bb/build.py
index a228b05ddd..c19f91d068 100644
--- a/bitbake/lib/bb/build.py
+++ b/bitbake/lib/bb/build.py
@@ -10,6 +10,8 @@
 #
 # Based on Gentoo's portage.py.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py
index 65c514b908..42193dc9d6 100644
--- a/bitbake/lib/bb/cache.py
+++ b/bitbake/lib/bb/cache.py
@@ -15,6 +15,8 @@
 # Copyright (C) 2005        Holger Hans Peter Freyther
 # Copyright (C) 2005        ROAD GmbH
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/cache_extra.py b/bitbake/lib/bb/cache_extra.py
index 83f4959d6c..108d55d16f 100644
--- a/bitbake/lib/bb/cache_extra.py
+++ b/bitbake/lib/bb/cache_extra.py
@@ -12,6 +12,8 @@
 # Copyright (C) 2011, Intel Corporation. All rights reserved.
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/checksum.py b/bitbake/lib/bb/checksum.py
index 4e1598fe83..9ac07a6a84 100644
--- a/bitbake/lib/bb/checksum.py
+++ b/bitbake/lib/bb/checksum.py
@@ -2,6 +2,8 @@
 #
 # Copyright (C) 2012 Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/codeparser.py b/bitbake/lib/bb/codeparser.py
index ac995a6a1d..fd2c4734f0 100644
--- a/bitbake/lib/bb/codeparser.py
+++ b/bitbake/lib/bb/codeparser.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 """
 BitBake code parser
diff --git a/bitbake/lib/bb/command.py b/bitbake/lib/bb/command.py
index 6c966e3dbc..9ebaac643a 100644
--- a/bitbake/lib/bb/command.py
+++ b/bitbake/lib/bb/command.py
@@ -6,6 +6,8 @@ Provide an interface to interact with the bitbake server through 'commands'
 # Copyright (C) 2006-2007  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/compat.py b/bitbake/lib/bb/compat.py
index de1923d28a..49356681ab 100644
--- a/bitbake/lib/bb/compat.py
+++ b/bitbake/lib/bb/compat.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 """Code pulled from future python versions, here for compatibility"""
 from collections import MutableMapping, KeysView, ValuesView, ItemsView, OrderedDict
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 9ccaa79f57..fe812653fa 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -9,6 +9,8 @@
 # Copyright (C) 2005        ROAD GmbH
 # Copyright (C) 2006 - 2007 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/cookerdata.py b/bitbake/lib/bb/cookerdata.py
index 09412e28cf..3b074b2f3a 100644
--- a/bitbake/lib/bb/cookerdata.py
+++ b/bitbake/lib/bb/cookerdata.py
@@ -9,6 +9,8 @@
 # Copyright (C) 2005        ROAD GmbH
 # Copyright (C) 2006        Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/daemonize.py b/bitbake/lib/bb/daemonize.py
index c937675eb6..f01e6ec7cc 100644
--- a/bitbake/lib/bb/daemonize.py
+++ b/bitbake/lib/bb/daemonize.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 """
 Python Daemonizing helper
diff --git a/bitbake/lib/bb/data.py b/bitbake/lib/bb/data.py
index 29c2388038..ba50b9ff1b 100644
--- a/bitbake/lib/bb/data.py
+++ b/bitbake/lib/bb/data.py
@@ -22,6 +22,8 @@ the speed is more critical here.
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2005        Holger Hans Peter Freyther
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/data_smart.py b/bitbake/lib/bb/data_smart.py
index 07db7be97a..441bb3001b 100644
--- a/bitbake/lib/bb/data_smart.py
+++ b/bitbake/lib/bb/data_smart.py
@@ -14,6 +14,8 @@ BitBake build tools.
 # Copyright (C) 2005        Uli Luckas
 # Copyright (C) 2005        ROAD GmbH
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/event.py b/bitbake/lib/bb/event.py
index 5b1b094a80..48f8e73847 100644
--- a/bitbake/lib/bb/event.py
+++ b/bitbake/lib/bb/event.py
@@ -9,6 +9,8 @@ BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/exceptions.py b/bitbake/lib/bb/exceptions.py
index cd713439ea..ecbad59970 100644
--- a/bitbake/lib/bb/exceptions.py
+++ b/bitbake/lib/bb/exceptions.py
@@ -1,3 +1,6 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 import inspect
 import traceback
diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index 8fecc809d4..c92844da5c 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -10,6 +10,8 @@ BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2012  Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/bzr.py b/bitbake/lib/bb/fetch2/bzr.py
index 658502f9a6..891fef9b9d 100644
--- a/bitbake/lib/bb/fetch2/bzr.py
+++ b/bitbake/lib/bb/fetch2/bzr.py
@@ -10,6 +10,8 @@ BitBake 'Fetch' implementation for bzr.
 #   BitBake build tools.
 #   Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/clearcase.py b/bitbake/lib/bb/fetch2/clearcase.py
index 3a6573d0b2..ff181bb78b 100644
--- a/bitbake/lib/bb/fetch2/clearcase.py
+++ b/bitbake/lib/bb/fetch2/clearcase.py
@@ -47,6 +47,8 @@ User credentials:
 """
 # Copyright (C) 2014 Siemens AG
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/cvs.py b/bitbake/lib/bb/fetch2/cvs.py
index 0e0a3196f8..666f4be2bc 100644
--- a/bitbake/lib/bb/fetch2/cvs.py
+++ b/bitbake/lib/bb/fetch2/cvs.py
@@ -10,6 +10,8 @@ BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index c69d25c914..78ad18cc7a 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -55,7 +55,9 @@ Supported SRC_URI options are:
 """
-#Copyright (C) 2005 Richard Purdie
+# Copyright (C) 2005 Richard Purdie
+#
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
diff --git a/bitbake/lib/bb/fetch2/gitannex.py b/bitbake/lib/bb/fetch2/gitannex.py
index a9b69caab4..3a32c85a83 100644
--- a/bitbake/lib/bb/fetch2/gitannex.py
+++ b/bitbake/lib/bb/fetch2/gitannex.py
@@ -7,6 +7,8 @@ BitBake 'Fetch' git annex implementation
 # Copyright (C) 2014 Otavio Salvador
 # Copyright (C) 2014 O.S. Systems Software LTDA.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/gitsm.py b/bitbake/lib/bb/fetch2/gitsm.py
index 32389130bd..e910a08390 100644
--- a/bitbake/lib/bb/fetch2/gitsm.py
+++ b/bitbake/lib/bb/fetch2/gitsm.py
@@ -16,6 +16,8 @@ NOTE: Switching a SRC_URI from "git://" to "gitsm://" requires a clean of your r
 # Copyright (C) 2013 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/hg.py b/bitbake/lib/bb/fetch2/hg.py
index 5a2985e16c..c9eeaaefca 100644
--- a/bitbake/lib/bb/fetch2/hg.py
+++ b/bitbake/lib/bb/fetch2/hg.py
@@ -13,6 +13,8 @@ BitBake 'Fetch' implementation for mercurial DRCS (hg).
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
diff --git a/bitbake/lib/bb/fetch2/local.py b/bitbake/lib/bb/fetch2/local.py
index a114ac12e5..13e6d80b5b 100644
--- a/bitbake/lib/bb/fetch2/local.py
+++ b/bitbake/lib/bb/fetch2/local.py
@@ -10,6 +10,8 @@ BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/npm.py b/bitbake/lib/bb/fetch2/npm.py
index 65bf5a3644..7235f899f4 100644
--- a/bitbake/lib/bb/fetch2/npm.py
+++ b/bitbake/lib/bb/fetch2/npm.py
@@ -1,3 +1,6 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # ex:ts=4:sw=4:sts=4:et
 # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 """
diff --git a/bitbake/lib/bb/fetch2/osc.py b/bitbake/lib/bb/fetch2/osc.py
index 6c60456b53..19c0d9dcaa 100644
--- a/bitbake/lib/bb/fetch2/osc.py
+++ b/bitbake/lib/bb/fetch2/osc.py
@@ -1,3 +1,6 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # ex:ts=4:sw=4:sts=4:et
 # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 """
diff --git a/bitbake/lib/bb/fetch2/perforce.py b/bitbake/lib/bb/fetch2/perforce.py
index 903a8e61ae..366da99eab 100644
--- a/bitbake/lib/bb/fetch2/perforce.py
+++ b/bitbake/lib/bb/fetch2/perforce.py
@@ -8,6 +8,8 @@ BitBake 'Fetch' implementation for perforce
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2016 Kodak Alaris, Inc.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/repo.py b/bitbake/lib/bb/fetch2/repo.py
index 8c7e81853a..066ab08fc3 100644
--- a/bitbake/lib/bb/fetch2/repo.py
+++ b/bitbake/lib/bb/fetch2/repo.py
@@ -10,6 +10,8 @@ BitBake "Fetch" repo (git) implementation
 # Based on git.py which is:
 #Copyright (C) 2005 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/s3.py b/bitbake/lib/bb/fetch2/s3.py
index 1629288622..fae7c8b0f0 100644
--- a/bitbake/lib/bb/fetch2/s3.py
+++ b/bitbake/lib/bb/fetch2/s3.py
@@ -13,6 +13,8 @@ The aws tool must be correctly installed and configured prior to use.
 # Based in part on bb.fetch2.wget:
 #    Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/sftp.py b/bitbake/lib/bb/fetch2/sftp.py
index 81884a6aa4..6dea6ad6b2 100644
--- a/bitbake/lib/bb/fetch2/sftp.py
+++ b/bitbake/lib/bb/fetch2/sftp.py
@@ -44,6 +44,8 @@ SRC_URI = "sftp://user@host.example.com/dir/path.file.txt"
 # Based in part on bb.fetch2.wget:
 #    Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/ssh.py b/bitbake/lib/bb/fetch2/ssh.py
index 6047ee417a..d416a9db87 100644
--- a/bitbake/lib/bb/fetch2/ssh.py
+++ b/bitbake/lib/bb/fetch2/ssh.py
@@ -29,6 +29,8 @@ IETF secsh internet draft:
 #            Copyright 2003 Holger Schurig
 #
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/svn.py b/bitbake/lib/bb/fetch2/svn.py
index 9dcf3eb090..4249e34c49 100644
--- a/bitbake/lib/bb/fetch2/svn.py
+++ b/bitbake/lib/bb/fetch2/svn.py
@@ -8,6 +8,8 @@ BitBake 'Fetch' implementation for svn.
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2004        Marcin Juszkiewicz
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/fetch2/wget.py b/bitbake/lib/bb/fetch2/wget.py
index 3bb3e3bb0c..89dfd4a7b2 100644
--- a/bitbake/lib/bb/fetch2/wget.py
+++ b/bitbake/lib/bb/fetch2/wget.py
@@ -10,6 +10,8 @@ BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/main.py b/bitbake/lib/bb/main.py
index 41dd3b9e03..215c63ef9f 100755
--- a/bitbake/lib/bb/main.py
+++ b/bitbake/lib/bb/main.py
@@ -9,6 +9,8 @@
 # Copyright (C) 2005        ROAD GmbH
 # Copyright (C) 2006        Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/methodpool.py b/bitbake/lib/bb/methodpool.py
index 49aed3338b..2f899098e6 100644
--- a/bitbake/lib/bb/methodpool.py
+++ b/bitbake/lib/bb/methodpool.py
@@ -4,6 +4,8 @@
 #
 # Copyright (C)       2006 Holger Hans Peter Freyther
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/monitordisk.py b/bitbake/lib/bb/monitordisk.py
index 2ad1e61562..c243add540 100644
--- a/bitbake/lib/bb/monitordisk.py
+++ b/bitbake/lib/bb/monitordisk.py
@@ -4,6 +4,8 @@
 #
 # Copyright (C) 2012 Robert Yang
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/msg.py b/bitbake/lib/bb/msg.py
index 96f077ec49..64662079a4 100644
--- a/bitbake/lib/bb/msg.py
+++ b/bitbake/lib/bb/msg.py
@@ -9,6 +9,8 @@ Message handling infrastructure for bitbake
 # Copyright (C) 2006        Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/namedtuple_with_abc.py b/bitbake/lib/bb/namedtuple_with_abc.py
index 32f2fc642c..c8e1d55c15 100644
--- a/bitbake/lib/bb/namedtuple_with_abc.py
+++ b/bitbake/lib/bb/namedtuple_with_abc.py
@@ -1,6 +1,9 @@
 # http://code.activestate.com/recipes/577629-namedtupleabc-abstract-base-class-mix-in-for-named/
 #!/usr/bin/env python
 # Copyright (c) 2011 Jan Kaliszewski (zuo). Available under the MIT License.
+#
+# SPDX-License-Identifier: MIT
+#
 """
 namedtuple_with_abc.py:
diff --git a/bitbake/lib/bb/parse/__init__.py b/bitbake/lib/bb/parse/__init__.py
index 5397d57a51..8ff1b8a24a 100644
--- a/bitbake/lib/bb/parse/__init__.py
+++ b/bitbake/lib/bb/parse/__init__.py
@@ -9,6 +9,8 @@ File parsers for the BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2003, 2004  Phil Blundell
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/parse/ast.py b/bitbake/lib/bb/parse/ast.py
index 6d7c80b34f..cf76dadbaa 100644
--- a/bitbake/lib/bb/parse/ast.py
+++ b/bitbake/lib/bb/parse/ast.py
@@ -8,6 +8,8 @@
 # Copyright (C) 2003, 2004 Phil Blundell
 # Copyright (C) 2009 Holger Hans Peter Freyther
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/parse/parse_py/BBHandler.py b/bitbake/lib/bb/parse/parse_py/BBHandler.py
index 314e8021f9..297ab77909 100644
--- a/bitbake/lib/bb/parse/parse_py/BBHandler.py
+++ b/bitbake/lib/bb/parse/parse_py/BBHandler.py
@@ -12,6 +12,8 @@
 #  Copyright (C) 2003, 2004  Chris Larson
 #  Copyright (C) 2003, 2004  Phil Blundell
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/parse/parse_py/ConfHandler.py b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
index ea49f8ca93..d1784b6c5b 100644
--- a/bitbake/lib/bb/parse/parse_py/ConfHandler.py
+++ b/bitbake/lib/bb/parse/parse_py/ConfHandler.py
@@ -11,6 +11,8 @@
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2003, 2004  Phil Blundell
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/parse/parse_py/__init__.py b/bitbake/lib/bb/parse/parse_py/__init__.py
index 3e658d0de9..a8f78dba76 100644
--- a/bitbake/lib/bb/parse/parse_py/__init__.py
+++ b/bitbake/lib/bb/parse/parse_py/__init__.py
@@ -11,6 +11,8 @@ File parsers for the BitBake build tools.
 # Copyright (C) 2003, 2004  Chris Larson
 # Copyright (C) 2003, 2004  Phil Blundell
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/persist_data.py b/bitbake/lib/bb/persist_data.py
index 0d44100f10..cac56728a9 100644
--- a/bitbake/lib/bb/persist_data.py
+++ b/bitbake/lib/bb/persist_data.py
@@ -8,6 +8,8 @@ currently, providing a key/value store accessed by 'domain'.
 # Copyright (C) 2007        Richard Purdie
 # Copyright (C) 2010        Chris Larson <chris_larson@mentor.com>
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/process.py b/bitbake/lib/bb/process.py
index e69697cb68..2dc472a86f 100644
--- a/bitbake/lib/bb/process.py
+++ b/bitbake/lib/bb/process.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 import logging
 import signal
 import subprocess
diff --git a/bitbake/lib/bb/progress.py b/bitbake/lib/bb/progress.py
index f54d1c76f8..00dddabbb8 100644
--- a/bitbake/lib/bb/progress.py
+++ b/bitbake/lib/bb/progress.py
@@ -4,6 +4,8 @@ BitBake progress handling code
 # Copyright (C) 2016 Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/providers.py b/bitbake/lib/bb/providers.py
index f496d84d12..856f0de76f 100644
--- a/bitbake/lib/bb/providers.py
+++ b/bitbake/lib/bb/providers.py
@@ -8,6 +8,8 @@
 # Copyright (C) 2005        ROAD GmbH
 # Copyright (C) 2006        Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/remotedata.py b/bitbake/lib/bb/remotedata.py
index 68ecffc198..05c6fabdf8 100644
--- a/bitbake/lib/bb/remotedata.py
+++ b/bitbake/lib/bb/remotedata.py
@@ -6,6 +6,8 @@ Provides support for using a datastore from the bitbake client
 # Copyright (C) 2016  Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 524c85d7d3..ddd2fde0ac 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -9,6 +9,8 @@ Handles preparation and execution of a queue of tasks
 # Copyright (C) 2006-2007  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/server/__init__.py b/bitbake/lib/bb/server/__init__.py
index 5a3fba968f..5ec7a75601 100644
--- a/bitbake/lib/bb/server/__init__.py
+++ b/bitbake/lib/bb/server/__init__.py
@@ -5,6 +5,8 @@
 # Copyright (C) 2006 - 2008  Richard Purdie
 # Copyright (C) 2013         Alexandru Damian
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/server/process.py b/bitbake/lib/bb/server/process.py
index 80a7875ad9..bac94fcc2d 100644
--- a/bitbake/lib/bb/server/process.py
+++ b/bitbake/lib/bb/server/process.py
@@ -3,6 +3,8 @@
 #
 # Copyright (C) 2010 Bob Foerster <robert@erafx.com>
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/server/xmlrpcclient.py b/bitbake/lib/bb/server/xmlrpcclient.py
index 4661a9e5a0..fc2fddd54b 100644
--- a/bitbake/lib/bb/server/xmlrpcclient.py
+++ b/bitbake/lib/bb/server/xmlrpcclient.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
 # Copyright (C) 2006 - 2008  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/server/xmlrpcserver.py b/bitbake/lib/bb/server/xmlrpcserver.py
index 875b1282e5..b885f9a79c 100644
--- a/bitbake/lib/bb/server/xmlrpcserver.py
+++ b/bitbake/lib/bb/server/xmlrpcserver.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
 # Copyright (C) 2006 - 2008  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index 7b9f3debc2..e0a66e68d5 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 import hashlib
 import logging
 import os
diff --git a/bitbake/lib/bb/taskdata.py b/bitbake/lib/bb/taskdata.py
index 94e822c485..5316d1b42f 100644
--- a/bitbake/lib/bb/taskdata.py
+++ b/bitbake/lib/bb/taskdata.py
@@ -10,6 +10,8 @@ Task data collection and handling
 # Copyright (C) 2006  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/codeparser.py b/bitbake/lib/bb/tests/codeparser.py
index 3fd76a8f9f..00ee6de533 100644
--- a/bitbake/lib/bb/tests/codeparser.py
+++ b/bitbake/lib/bb/tests/codeparser.py
@@ -6,6 +6,8 @@
 # Copyright (C) 2010 Chris Larson
 # Copyright (C) 2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/cooker.py b/bitbake/lib/bb/tests/cooker.py
index 2b44236506..850dde4f6e 100644
--- a/bitbake/lib/bb/tests/cooker.py
+++ b/bitbake/lib/bb/tests/cooker.py
@@ -3,6 +3,8 @@
 #
 # BitBake Tests for cooker.py
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/cow.py b/bitbake/lib/bb/tests/cow.py
index d149d84d0d..5051e4ed73 100644
--- a/bitbake/lib/bb/tests/cow.py
+++ b/bitbake/lib/bb/tests/cow.py
@@ -3,6 +3,8 @@
 #
 # BitBake Tests for Copy-on-Write (cow.py)
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright 2006 Holger Freyther <freyther@handhelds.org>
 #
 # This program is free software; you can redistribute it and/or modify
diff --git a/bitbake/lib/bb/tests/data.py b/bitbake/lib/bb/tests/data.py
index 3c511f214b..b584edee54 100644
--- a/bitbake/lib/bb/tests/data.py
+++ b/bitbake/lib/bb/tests/data.py
@@ -6,6 +6,8 @@
 # Copyright (C) 2010 Chris Larson
 # Copyright (C) 2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/event.py b/bitbake/lib/bb/tests/event.py
index d3a5f6269f..4822dc7bca 100644
--- a/bitbake/lib/bb/tests/event.py
+++ b/bitbake/lib/bb/tests/event.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2017 Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/fetch.py b/bitbake/lib/bb/tests/fetch.py
index 429998b34f..559b4892e3 100644
--- a/bitbake/lib/bb/tests/fetch.py
+++ b/bitbake/lib/bb/tests/fetch.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/parse.py b/bitbake/lib/bb/tests/parse.py
index 747fc35fc2..bbb4dc376c 100644
--- a/bitbake/lib/bb/tests/parse.py
+++ b/bitbake/lib/bb/tests/parse.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2015 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/persist_data.py b/bitbake/lib/bb/tests/persist_data.py
index 812bcbd7b8..6aee9f1ca8 100644
--- a/bitbake/lib/bb/tests/persist_data.py
+++ b/bitbake/lib/bb/tests/persist_data.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2018 Garmin Ltd.
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tests/utils.py b/bitbake/lib/bb/tests/utils.py
index f1cd83a419..13351068d7 100644
--- a/bitbake/lib/bb/tests/utils.py
+++ b/bitbake/lib/bb/tests/utils.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/tinfoil.py b/bitbake/lib/bb/tinfoil.py
index 368264f39a..da049b6e59 100644
--- a/bitbake/lib/bb/tinfoil.py
+++ b/bitbake/lib/bb/tinfoil.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2011 Mentor Graphics Corporation
 # Copyright (C) 2006-2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/__init__.py b/bitbake/lib/bb/ui/__init__.py
index a4805ed028..669dc86fc3 100644
--- a/bitbake/lib/bb/ui/__init__.py
+++ b/bitbake/lib/bb/ui/__init__.py
@@ -3,6 +3,8 @@
 #
 # Copyright (C) 2006-2007 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/buildinfohelper.py b/bitbake/lib/bb/ui/buildinfohelper.py
index 31323d281f..37b94cd071 100644
--- a/bitbake/lib/bb/ui/buildinfohelper.py
+++ b/bitbake/lib/bb/ui/buildinfohelper.py
@@ -3,6 +3,8 @@
 #
 # Copyright (C) 2013        Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/knotty.py b/bitbake/lib/bb/ui/knotty.py
index 4567c148c8..cf1e59e463 100644
--- a/bitbake/lib/bb/ui/knotty.py
+++ b/bitbake/lib/bb/ui/knotty.py
@@ -5,6 +5,8 @@
 #
 # Copyright (C) 2006-2012 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/ncurses.py b/bitbake/lib/bb/ui/ncurses.py
index 8690c529cc..713a4a4163 100644
--- a/bitbake/lib/bb/ui/ncurses.py
+++ b/bitbake/lib/bb/ui/ncurses.py
@@ -6,6 +6,8 @@
 # Copyright (C) 2006 Michael 'Mickey' Lauer
 # Copyright (C) 2006-2007 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/taskexp.py b/bitbake/lib/bb/ui/taskexp.py
index 8305d70f41..3ea0a242bf 100644
--- a/bitbake/lib/bb/ui/taskexp.py
+++ b/bitbake/lib/bb/ui/taskexp.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2007        Ross Burton
 # Copyright (C) 2007 - 2008 Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/toasterui.py b/bitbake/lib/bb/ui/toasterui.py
index 88cec37592..d2517edbb2 100644
--- a/bitbake/lib/bb/ui/toasterui.py
+++ b/bitbake/lib/bb/ui/toasterui.py
@@ -7,6 +7,8 @@
 # Copyright (C) 2006-2012 Richard Purdie
 # Copyright (C) 2013      Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/uievent.py b/bitbake/lib/bb/ui/uievent.py
index 9542b911ca..e96454404b 100644
--- a/bitbake/lib/bb/ui/uievent.py
+++ b/bitbake/lib/bb/ui/uievent.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
 # Copyright (C) 2006 - 2007  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/ui/uihelper.py b/bitbake/lib/bb/ui/uihelper.py
index 963c1ea2df..000a7cf41f 100644
--- a/bitbake/lib/bb/ui/uihelper.py
+++ b/bitbake/lib/bb/ui/uihelper.py
@@ -4,6 +4,8 @@
 # Copyright (C) 2006 - 2007  Michael 'Mickey' Lauer
 # Copyright (C) 2006 - 2007  Richard Purdie
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index a3f75fbe9d..69e01519b0 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -6,6 +6,8 @@ BitBake Utility Functions
 # Copyright (C) 2004 Michael Lauer
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.