copyright-and-license: adopt SPDX-compliant header

This change removes the old copyright header from project sources and
replaces it with a new simplified SPDX-compliant header. Note that files
that were missing the header but reasonably understood to be licensed
according to the root license were not corrected.

Signed-off-by: Ryan Turner <ryan@turnrye.com>

scripts/add_dc_offset.cpp

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 /*******************************************************************************
  *                                                                             *
  *  Convert a baseband from m17-cpp-mod to Module17/MD3x0 ADC input equivalent *

scripts/bin2sgl.py

@@ -1,5 +1,9 @@
 #!/usr/bin/env python3
 # Single-file bin2sgl converter (Python)
+#
+# This work is a derivation from the OpenGD77 project, the file specifically having these terms:
+# SPDX-FileCopyrightText: Copyright (C)2019 Kai Ludwig, DG4KLU
+# SPDX-License-Identifier: BSD-3-Clause
 from __future__ import annotations
 import argparse
 from pathlib import Path

scripts/c2tool.c

@@ -1,19 +1,8 @@
-/***************************************************************************
- *   Copyright (C) 2024 - 2025 by Silvano Seva IU2KWO                      *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   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.                                   *
- *                                                                         *
- *   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         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, see <http://www.gnu.org/licenses/>   *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
 
 #include <codec2/codec2.h>
 #include <stdint.h>

scripts/clang_format.sh

@@ -1,19 +1,7 @@
 #!/bin/bash -e
-
-#  Copyright (C) 2021 by Alain Carlucci.
 #
-#  This program is free software; you can redistribute it and/or modify
-#  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.
-#
-#  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
-#  GNU General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program; if not, see <http://www.gnu.org/licenses/>
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
 
 function show_help {
     echo "OpenRTX clang-format tool."

scripts/cs7000_wrap.py

@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-
-# Copyright 2025 Alain Carlucci, Silvano Seva
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
 
 import struct
 import sys
@@ -37,7 +38,7 @@ input_file = sys.argv[1]
 output_file = sys.argv[2]
 
 file_data = open(input_file, "rb").read()
-file_len = len(file_data) 
+file_len = len(file_data)
 
 encoded_len = struct.pack("<I",  file_len )
 
@@ -50,7 +51,7 @@ payload = payload + (bytes([0] * padlen))
 full_key = key * ((len(payload) + len(key) + 0x80) // len(key))
 
 header1 = [
-0x00, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
 ]
 
@@ -64,14 +65,14 @@ header2=[
 0x00, 0x00, 0x00, 0x00, 0x00,
 
 # 0x44
-0x80, 0x00, 0x00, 0x00, 
+0x80, 0x00, 0x00, 0x00,
 
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
 # 0x6d      0x6f
-0x01, 0x00, 0x19, 0x00, 
+0x01, 0x00, 0x19, 0x00,
 
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00

scripts/generate_symbols.py

@@ -58,9 +58,16 @@ def svgToBytes(filename, height):
         alpha.show()
     return numpy.array(alpha)
 
-
+# REUSE-IgnoreStart
 first_ascii = 32  # Start at ascii d32 which is " " per https://www.rapidtables.com/code/text/ascii-table.html
-dont_edit_banner = "// This is a generated file, please do not edit it! Use generate_symbols.py\n"
+dont_edit_banner  = "/*\n"
+dont_edit_banner += " * SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors\n"
+dont_edit_banner += " * \n"
+dont_edit_banner += " * SPDX-License-Identifier: GPL-3.0-or-later\n"
+dont_edit_banner += " */\n"
+dont_edit_banner += "\n"
+dont_edit_banner += "// This is a generated file, please do not edit it! Use generate_symbols.py\n"
+# REUSE-IgnoreEnd
 
 class FontDefinition:
     scalar = 1.6  # this number is used to roughly convert from pt to px

scripts/get_demod_log.c

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>

scripts/openocd/mod17.cfg

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
+
 gdb_port 3333
 
 source [find interface/jlink.cfg]

scripts/openocd/stm32f4.cfg

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
 #
 # OpenOCD configuration file for in-circuit debugging the stm32f4discovery
 # To start debugging issue those commands:

scripts/plot_m17_demod_csv.py

@@ -1,4 +1,7 @@
 #! /usr/bin/env python3
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
 
 import pandas as pd
 from matplotlib import pyplot as plt

scripts/plot_m17_demod_csv2.py

@@ -1,4 +1,7 @@
 #! /usr/bin/env python3
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
 
 import pandas as pd
 from matplotlib import pyplot as plt

scripts/uf2conv.py

@@ -1,4 +1,8 @@
 #!/usr/bin/env python3
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+# SPDX-FileCopyrightText: Copyright 2020-2026 OpenRTX Contributors
+
 import sys
 import struct
 import subprocess