Make the software package compliant with the REUSE Specification v3.0 (see https://reuse.software/spec/)

Update license headers to SPDX format (see https://spdx.org/)
Add license to all files
Add CI job in GitHub Actions to ensure compliance

.clang-format

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2018-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
 ---
 Language:        Cpp
 # BasedOnStyle:  Google

.clang-tidy

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2018-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
 ---
 Checks: '-*,
         boost-use-to-string,

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,3 +1,7 @@
+{::comment}
+SPDX-License-Identifier: GPL-3.0-or-later
+SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
+{:/comment}
 :+1::tada: Hello, and thanks for contributing to [GNSS-SDR](https://gnss-sdr.org)! :tada::+1:
 
 Before submitting your pull request, please make sure the following is done:

.github/workflows/main.yml

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
 name: Simple CI
 
 on: [push, pull_request]
@@ -124,3 +126,13 @@ jobs:
       run: cd build && sudo xcodebuild -configuration Release -target install
     - name: test
       run: cd build && ctest -C Release --exclude-regex volk_gnsssdr_32fc_32f_rotator_dotprodxnpuppet_32fc
+
+
+  REUSE-compliance:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Check REUSE compliance
+      uses: docker://fsfe/reuse
+      with:
+        args: reuse lint

.gitignore

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2011 Carles Fernandez-Prades <carles.fernandez(at)cttc.es>
 *~
 .*.swp
 docs/doxygen/Doxyfile

AUTHORS

@@ -56,3 +56,6 @@ Mara Branzanti          mara.branzanti@gmail.com        Contributor
 Marc Molina             marc.molina.pena@gmail.com      Contributor
 Marc Sales              marcsales92@gmail.com           Contributor
 Carlos Paniego          carpanie@hotmail.com            Artwork
+
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>

CMakeLists.txt

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 #
 
 ################################################################################

CODE_OF_CONDUCT.md

@@ -1,3 +1,7 @@
+{::comment}
+SPDX-License-Identifier: GPL-3.0-or-later
+SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
+{:/comment}
 # Contributor Covenant Code of Conduct
 
 ## Our Pledge

CONTRIBUTING.md

@@ -1,3 +1,7 @@
+{::comment}
+SPDX-License-Identifier: GPL-3.0-or-later
+SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
+{:/comment}
 # Contributing to GNSS-SDR
 
 :+1::tada: Thanks for taking the time to contribute! :tada::+1:

LICENSES/BSD-1-Clause.txt

@@ -0,0 +1,18 @@
+Copyright (c) <year> <owner> All rights reserved.
+
+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,
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+
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+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/BSD-2-Clause.txt

@@ -0,0 +1,22 @@
+Copyright (c) <year> <owner>. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
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+
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+
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+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/BSD-3-Clause.txt

@@ -0,0 +1,26 @@
+Copyright (c) <year> <owner>. All rights reserved.
+
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+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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+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.

LICENSES/CC-BY-4.0.txt

@@ -0,0 +1,324 @@
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LICENSES/GPL-3.0-or-later.txt

@@ -0,0 +1,625 @@
+GNU GENERAL PUBLIC LICENSE
+
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+licenses /why-not-lgpl.html>.

LICENSES/LGPL-3.0-only.txt

@@ -0,0 +1,163 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+This version of the GNU Lesser General Public License incorporates the terms
+and conditions of version 3 of the GNU General Public License, supplemented
+by the additional permissions listed below.
+
+   0. Additional Definitions.
+
+      
+
+As used herein, "this License" refers to version 3 of the GNU Lesser General
+Public License, and the "GNU GPL" refers to version 3 of the GNU General Public
+License.
+
+      
+
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+an Application or a Combined Work as defined below.
+
+      
+
+An "Application" is any work that makes use of an interface provided by the
+Library, but which is not otherwise based on the Library. Defining a subclass
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+
+      
+
+A "Combined Work" is a work produced by combining or linking an Application
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+
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+
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+
+      
+
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+excluding the System Libraries of the Combined Work.
+
+   1. Exception to Section 3 of the GNU GPL.
+
+You may convey a covered work under sections 3 and 4 of this License without
+being bound by section 3 of the GNU GPL.
+
+   2. Conveying Modified Versions.
+
+If you modify a copy of the Library, and, in your modifications, a facility
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+
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+of your choice, provided that, if the incorporated material is not limited
+to numerical parameters, data structure layouts and accessors, or small macros,
+inline functions and templates (ten or fewer lines in length), you do both
+of the following:
+
+a) Give prominent notice with each copy of the object code that the Library
+is used in it and that the Library and its use are covered by this License.
+
+b) Accompany the object code with a copy of the GNU GPL and this license document.
+
+   4. Combined Works.
+
+You may convey a Combined Work under terms of your choice that, taken together,
+effectively do not restrict modification of the portions of the Library contained
+in the Combined Work and reverse engineering for debugging such modifications,
+if you also do each of the following:
+
+a) Give prominent notice with each copy of the Combined Work that the Library
+is used in it and that the Library and its use are covered by this License.
+
+b) Accompany the Combined Work with a copy of the GNU GPL and this license
+document.
+
+c) For a Combined Work that displays copyright notices during execution, include
+the copyright notice for the Library among these notices, as well as a reference
+directing the user to the copies of the GNU GPL and this license document.
+
+      d) Do one of the following:
+
+0) Convey the Minimal Corresponding Source under the terms of this License,
+and the Corresponding Application Code in a form suitable for, and under terms
+that permit, the user to recombine or relink the Application with a modified
+version of the Linked Version to produce a modified Combined Work, in the
+manner specified by section 6 of the GNU GPL for conveying Corresponding Source.
+
+1) Use a suitable shared library mechanism for linking with the Library. A
+suitable mechanism is one that (a) uses at run time a copy of the Library
+already present on the user's computer system, and (b) will operate properly
+with a modified version of the Library that is interface-compatible with the
+Linked Version.
+
+e) Provide Installation Information, but only if you would otherwise be required
+to provide such information under section 6 of the GNU GPL, and only to the
+extent that such information is necessary to install and execute a modified
+version of the Combined Work produced by recombining or relinking the Application
+with a modified version of the Linked Version. (If you use option 4d0, the
+Installation Information must accompany the Minimal Corresponding Source and
+Corresponding Application Code. If you use option 4d1, you must provide the
+Installation Information in the manner specified by section 6 of the GNU GPL
+for conveying Corresponding Source.)
+
+   5. Combined Libraries.
+
+You may place library facilities that are a work based on the Library side
+by side in a single library together with other library facilities that are
+not Applications and are not covered by this License, and convey such a combined
+library under terms of your choice, if you do both of the following:
+
+a) Accompany the combined library with a copy of the same work based on the
+Library, uncombined with any other library facilities, conveyed under the
+terms of this License.
+
+b) Give prominent notice with the combined library that part of it is a work
+based on the Library, and explaining where to find the accompanying uncombined
+form of the same work.
+
+   6. Revised Versions of the GNU Lesser General Public License.
+
+The Free Software Foundation may publish revised and/or new versions of the
+GNU Lesser General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library as you
+received it specifies that a certain numbered version of the GNU Lesser General
+Public License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that published version or of
+any later version published by the Free Software Foundation. If the Library
+as you received it does not specify a version number of the GNU Lesser General
+Public License, you may choose any version of the GNU Lesser General Public
+License ever published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide whether
+future versions of the GNU Lesser General Public License shall apply, that
+proxy's public statement of acceptance of any version is permanent authorization
+for you to choose that version for the Library.

LICENSES/LicenseRef-Apple-Permissive.txt

@@ -0,0 +1,36 @@
+This Apple software is supplied to you by Apple Inc. ("Apple")
+in consideration of your agreement to the following terms, and your use,
+installation, modification or redistribution of this Apple software
+constitutes acceptance of these terms.  If you do not agree with these
+terms, please do not use, install, modify or redistribute this Apple
+software.
+
+In consideration of your agreement to abide by the following terms, and
+subject to these terms, Apple grants you a personal, non - exclusive
+license, under Apple's copyrights in this original Apple software ( the
+"Apple Software" ), to use, reproduce, modify and redistribute the Apple
+Software, with or without modifications, in source and / or binary forms;
+provided that if you redistribute the Apple Software in its entirety and
+without modifications, you must retain this notice and the following text
+and disclaimers in all such redistributions of the Apple Software. Neither
+the name, trademarks, service marks or logos of Apple Inc. may be used to
+endorse or promote products derived from the Apple Software without specific
+prior written permission from Apple.  Except as expressly stated in this
+notice, no other rights or licenses, express or implied, are granted by
+Apple herein, including but not limited to any patent rights that may be
+infringed by your derivative works or by other works in which the Apple
+Software may be incorporated.
+
+The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO
+WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
+WARRANTIES OF NON - INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION
+ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
+
+IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ( INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION ) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION
+AND / OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
+UNDER THEORY OF CONTRACT, TORT ( INCLUDING NEGLIGENCE ), STRICT LIABILITY OR
+OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/MIT.txt

@@ -0,0 +1,19 @@
+MIT License Copyright (c) <year> <copyright holders>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

LICENSES/Zlib.txt

@@ -0,0 +1,19 @@
+zlib License Copyright (c) <year> <copyright holders>
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the
+use of this software.
+
+Permission is granted to anyone to use this software for any purpose, including
+commercial applications, and to alter it and redistribute it freely, subject
+to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim
+that you wrote the original software. If you use this software in a product,
+an acknowledgment in the product documentation would be appreciated but is
+not required.
+
+2. Altered source versions must be plainly marked as such, and must not be
+misrepresented as being the original software.
+
+   3. This notice may not be removed or altered from any source distribution.

MANIFEST.md

@@ -1,3 +1,7 @@
+{::comment}
+SPDX-License-Identifier: GPL-3.0-or-later
+SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
+{:/comment}
 title: gnss-sdr
 brief: An open source global navigation satellite systems software defined receiver
 tags:

README.md

@@ -1,3 +1,7 @@
+{::comment}
+SPDX-License-Identifier: GPL-3.0-or-later
+SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
+{:/comment}
 [![](./docs/doxygen/images/gnss-sdr_logo.png)](https://gnss-sdr.org "GNSS-SDR website")
 
 [![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)

build/.gitignore

@@ -1,4 +1,6 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
 # Ignore everything in this directory
 *
 # Except this file
-!.gitignore
+!.gitignore

cmake/Modules/AvoidAccelerate.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # Avoid using the BLAS and LAPACK implementations that comes with the Accelerate
 # framework, which causes a bug when the BeiDou constellation is enabled

cmake/Modules/DetectLinuxDistro.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 if(CMAKE_SIZEOF_VOID_P EQUAL 8)
     set(ARCHITECTURE_STRING "(64 bits)")

cmake/Modules/DetectMacOSVersion.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 execute_process(COMMAND uname -v OUTPUT_VARIABLE DARWIN_VERSION)
 string(REGEX MATCH "[0-9]+" DARWIN_VERSION ${DARWIN_VERSION})

cmake/Modules/FindFILESYSTEM.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # Original code from https://github.com/vector-of-bool/CMakeCM and modified
 # by C. Fernandez. The original code is distributed under the OSI-approved

cmake/Modules/FindGFLAGS.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # - Try to find GFlags
 #

cmake/Modules/FindGFORTRAN.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 if(NOT COMMAND feature_summary)
     include(FeatureSummary)

cmake/Modules/FindGLOG.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # - Try to find the Google Glog library
 #

cmake/Modules/FindGNSSSIMULATOR.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 find_program(SW_GENERATOR_BIN gnss_sim
     PATHS /usr/bin

cmake/Modules/FindGNURADIO.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Find GNU Radio

cmake/Modules/FindGOOGLETEST.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 
 # - Try to find Googletest source code

cmake/Modules/FindGPERFTOOLS.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # Tries to find Gperftools.
 #

cmake/Modules/FindGPSTK.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # - Find gpstk library
 # Find the native gpstk includes and library

cmake/Modules/FindGRDBFCTTC.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Find  GR-DBFCTTC Module

cmake/Modules/FindGRGN3S.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Find  GR-GN3S Module

cmake/Modules/FindGRIIO.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindGROSMOSDR.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # Tries to find gr-osmosdr.
 #

cmake/Modules/FindLIBAD9361.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindLIBIIO.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindLOG4CPP.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # - Find Log4cpp
 # Find the native LOG4CPP includes and library

cmake/Modules/FindMATIO.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # FindMATIO
 #

cmake/Modules/FindOPENCL.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # - Try to find OpenCL

cmake/Modules/FindORC.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 if(NOT COMMAND feature_summary)
     include(FeatureSummary)

cmake/Modules/FindPCAP.cmake

@@ -3,41 +3,16 @@
 #  Copyright (c) 2006 Frederic Heem, <frederic.heem@telsey.it>
 #  All rights reserved.
 #
-# Redistribution and use in source and binary forms, with or without
+# This file is part of GNSS-SDR.
-# modification, are permitted provided that the following conditions
-# are met:
 #
-# * Redistributions of source code must retain the above copyright
+# SPDX-License-Identifier: BSD-3-Clause
-#   notice, this list of conditions and the following disclaimer.
-#
-# * Redistributions in binary form must reproduce the above copyright
-#   notice, this list of conditions and the following disclaimer in
-#   the documentation and/or other materials provided with the
-#   distribution.
-#
-# * Neither the name of the Telsey nor the names of its
-#   contributors may be used to endorse or promote products derived
-#   from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "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 THE
-# COPYRIGHT OWNER OR CONTRIBUTORS 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.
 #
 ###################################################################
 # - Find pcap
 # Find the PCAP includes and library
 # http://www.tcpdump.org/
 #
-# The environment variable PCAPDIR allows to specficy where to find
+# The environment variable PCAPDIR allows to specify where to find
 # libpcap in non standard location.
 #
 #  PCAP_INCLUDE_DIRS - where to find pcap.h, etc.

cmake/Modules/FindPUGIXML.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 # Find the pugixml XML parsing library.
 #

cmake/Modules/FindTELEORBIT.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindUHD.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindVOLK.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/FindVOLKGNSSSDR.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 #
 # Provides the following imported target:

cmake/Modules/GnsssdrBuildTypes.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 if(DEFINED __INCLUDED_GNSSSDR_BUILD_TYPES_CMAKE)
     return()

cmake/Modules/SetupPython.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 
 ########################################################################

cmake/Modules/TestForARM.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ##############################################################################
 # check if the compiler defines the architecture as ARM  and set the

cmake/Toolchains/aarch64-linux-gnu.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR ARM)

cmake/Toolchains/arm-linux-gnueabihf.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR ARM)

cmake/Toolchains/arm_cortex_a15_hardfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A8 w/ NEON

cmake/Toolchains/arm_cortex_a53_hardfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A72 w/ NEON

cmake/Toolchains/arm_cortex_a72_hardfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A72 w/ NEON

cmake/Toolchains/arm_cortex_a8_hardfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A8 w/ NEON

cmake/Toolchains/arm_cortex_a8_softfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A8 w/ NEON

cmake/Toolchains/arm_cortex_a9_hardfp_native.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A8 w/ NEON

cmake/Toolchains/oe-sdk_cross.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ##########################################################
 # Toolchain file for Open Embedded

cmake/Toolchains/raspi3.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A72 w/ NEON

cmake/Toolchains/raspi4.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ########################################################################
 # Toolchain file for building native on a ARM Cortex A72 w/ NEON

cmake/Toolchains/zynq-7000.cmake

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 ##########################################################
 # Toolchain file for Zynq-7000 devices

cmake/cmake_uninstall.cmake.in

@@ -2,18 +2,7 @@
 #
 # This file is part of GNSS-SDR.
 #
-# GNSS-SDR is free software: you can redistribute it and/or modify
+# SPDX-License-Identifier: GPL-3.0-or-later
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNSS-SDR 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
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
 
 if(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
     message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")

conf/front-end-cal.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Default configuration file
 ; You can define your own front-end calibration tool configuration and invoke it by doing

conf/gnss-sdr-kalman-bayes.conf

@@ -1,3 +1,7 @@
+; This is a GNSS-SDR configuration file
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 [GNSS-SDR]
 
 ;######### GLOBAL OPTIONS ##################

conf/gnss-sdr.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Default configuration file
 ; You can define your own receiver and invoke it by doing

conf/gnss-sdr_BDS_B1I_byte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_BDS_B3I_GPS_L1_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_BDS_B3I_byte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_BDS_B3I_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_BDS_B3I_short.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 ; 5C is the channel identifier for BeiDou B2a, both the data signal and the pilot signal
 
 [GNSS-SDR]

conf/gnss-sdr_GLONASS_L1_CA_GPS_L1_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L1_CA_GPS_L2C_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L1_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L1_CA_ibyte_coh_trk.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L1_ibyte.conf

@@ -1,6 +1,7 @@
-; You can define your own receiver and invoke it by doing
+; This is a GNSS-SDR configuration file
-; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
-;
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L2_CA_GPS_L1_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L2_CA_GPS_L2C_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L2_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GLONASS_L2_CA_ibyte_coh_trk.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_2ch_fmcomms2_realtime.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_2ch_udp.conf

@@ -1,6 +1,7 @@
-; You can define your own receiver and invoke it by doing
+; This is a GNSS-SDR configuration file
-; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
-;
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_CA_ibyte.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_FPGA.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_GN3S_realtime.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_LimeSDR.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_SPIR.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_USRP_X300_realtime.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Configuration file for using USRP X300 as a RF front-end for GPS L1 signals.
 ; Set SignalSource.device_address to the IP address of your device

conf/gnss-sdr_GPS_L1_USRP_realtime.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Configuration file for using USRP 1 as a RF front-end for GPS L1 signals.
 ; Run:

conf/gnss-sdr_GPS_L1_acq_QuickSync.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_bladeRF.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_fmcomms2_realtime.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_gr_complex.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_gr_complex_gpu.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_ishort.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; You can define your own receiver and invoke it by doing
 ; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf

conf/gnss-sdr_GPS_L1_nsr.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Sample configuration file for IFEN SX-NSR software receiver front-end
 ; https://www.ifen.com/products/sx3-gnss-software-receiver/

conf/gnss-sdr_GPS_L1_nsr_kf.conf

@@ -1,7 +1,7 @@
-; Default configuration file
+; This is a GNSS-SDR configuration file
-; You can define your own receiver and invoke it by doing
+; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
-; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+; SPDX-License-Identifier: GPL-3.0-or-later
-;
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 [GNSS-SDR]
 

conf/gnss-sdr_GPS_L1_nsr_twobit_packed.conf

@@ -1,5 +1,7 @@
 ; This is a GNSS-SDR configuration file
 ; The configuration API is described at https://gnss-sdr.org/docs/sp-blocks/
+; SPDX-License-Identifier: GPL-3.0-or-later
+; SPDX-FileCopyrightText: (C) 2010-2020  (see AUTHORS file for a list of contributors)
 
 ; Sample configuration file for IFEN SX-NSR software receiver front-end
 ; https://www.ifen.com/products/sx3-gnss-software-receiver/