diff --git a/LICENSE b/LICENSE
index 731f5fdfb..69d466ca3 100644
--- a/LICENSE
+++ b/LICENSE
@@ -11,6 +11,11 @@ you may be subject, under such license terms. This agreement does not limit your
 rights under, or grant you rights that supersede, the license terms of any
 particular module.
 
+This HDL repository also includes a build system / recipe / scripts based on various
+makefiles and TCL scripts. The build system is released under a seperate license
+(BSD 1 Clause) from the HDL modules. This allows you to create your own HDL blocks
+and incorporated them into this build system.
+
 The mere aggregation of these modules (putting them side by side in the same
 source code repository or on a hard disk) does not mean that there is one master
 license for all the files. It is up to you, the user, to ensure that during the
diff --git a/LICENSE_ADIBSD b/LICENSE_ADIBSD
index b79018345..1204a2605 100644
--- a/LICENSE_ADIBSD
+++ b/LICENSE_ADIBSD
@@ -1,5 +1,5 @@
 
-Copyright 2011(c) Analog Devices, Inc.
+Copyright 2011 - 2021 (c) Analog Devices, Inc.
 
 All rights reserved.
 
diff --git a/LICENSE_BSD-1-Clause b/LICENSE_BSD-1-Clause
new file mode 100644
index 000000000..0a34f5661
--- /dev/null
+++ b/LICENSE_BSD-1-Clause
@@ -0,0 +1,19 @@
+Copyright (c) 2011 - 2021
+Analog Devices Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES “AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/library/scripts/library.mk b/library/scripts/library.mk
index 08ebd7a37..0f2f951e6 100644
--- a/library/scripts/library.mk
+++ b/library/scripts/library.mk
@@ -1,5 +1,6 @@
 ####################################################################################
-## Copyright 2018(c) Analog Devices, Inc.
+## Copyright (c) 2018 - 2021 Analog Devices, Inc.
+## SPDX short identifier: BSD-1-Clause
 ####################################################################################
 
 # Assumes this file is in library/scripts/library.mk
diff --git a/projects/scripts/project-intel.mk b/projects/scripts/project-intel.mk
index ceb053c01..7efaea4ad 100644
--- a/projects/scripts/project-intel.mk
+++ b/projects/scripts/project-intel.mk
@@ -1,5 +1,6 @@
 ####################################################################################
-## Copyright 2018(c) Analog Devices, Inc.
+## Copyright (c) 2020 - 2021 Analog Devices, Inc.
+## SPDX short identifier: BSD-1-Clause
 ####################################################################################
 
 # Assumes this file is in projects/scripts/project-intel.mk
diff --git a/projects/scripts/project-toplevel.mk b/projects/scripts/project-toplevel.mk
index ad8dcd8e6..055be228a 100644
--- a/projects/scripts/project-toplevel.mk
+++ b/projects/scripts/project-toplevel.mk
@@ -1,5 +1,6 @@
 ####################################################################################
-## Copyright 2018(c) Analog Devices, Inc.
+## Copyright (c) 2018 - 2021 Analog Devices, Inc.
+## SPDX short identifier: BSD-1-Clause
 ####################################################################################
 
 # Assumes this file is in projects/scripts/project-toplevel.mk
diff --git a/projects/scripts/project-xilinx.mk b/projects/scripts/project-xilinx.mk
index 0bc4a2585..611da2435 100644
--- a/projects/scripts/project-xilinx.mk
+++ b/projects/scripts/project-xilinx.mk
@@ -1,5 +1,6 @@
 ####################################################################################
-## Copyright 2018(c) Analog Devices, Inc.
+## Copyright (c) 2018 -2021 Analog Devices, Inc.
+## SPDX short identifier: BSD-1-Clause
 ####################################################################################
 
 # Assumes this file is in prpojects/scripts/project-xilinx.mk
diff --git a/quiet.mk b/quiet.mk
index 051d66f99..04aad0f1e 100644
--- a/quiet.mk
+++ b/quiet.mk
@@ -1,5 +1,6 @@
 ####################################################################################
-## Copyright 2018(c) Analog Devices, Inc.
+## Copyright (c) 2018 - 2021 Analog Devices, Inc.
+## SPDX short identifier: BSD-1-Clause
 ####################################################################################
 
 ifdef MAKE_TERMOUT