Licences: fix #350, and clean up license.

This ensures that applications are released under a license appropriate
for applications (GPL).
And doc (readme & Dox) ensures that everything is clear.

Signed-off-by: Robin Getz <[email protected]>

README.md

@@ -4,9 +4,10 @@ Library for interfacing with Linux IIO devices
 
 libiio is used to interface to the Linux Industrial Input/Output (IIO) Subsystem. The Linux IIO subsystem is intended to provide support for devices that in some sense are analog to digital or digital to analog converters (ADCs, DACs). This includes, but is not limited to ADCs, Accelerometers, Gyros, IMUs, Capacitance to Digital Converters (CDCs), Pressure Sensors, Color, Light and Proximity Sensors, Temperature Sensors, Magnetometers, DACs, DDS (Direct Digital Synthesis), PLLs (Phase Locked Loops), Variable/Programmable Gain Amplifiers (VGA, PGA), and RF transceivers. You can use libiio natively on an embedded Linux target (local mode), or use libiio to communicate remotely to that same target from a host Linux, Windows or MAC over USB or Ethernet or Serial.
 
-Although libiio was primarily developed by Analog Devices Inc., it is an active open source library, which many people have contributed to. It released under the GNU Lesser General Public License, version 2.1 or later, this open-source license allows anyone to use the library, on any vendors processor/FPGA/SoC, which may be controlling any vendors peripheral device (ADC, DAC, etc) either locally or remotely. This includes closed or open-source, commercial or non-commercial applications (subject to the LGPL license freedoms, obligations and restrictions).
+Although libiio was primarily developed by Analog Devices Inc., it is an active open source library, which many people have contributed to. The library is released under the GNU Lesser General Public License (LGPL), version 2.1 or (at your option) any later version, this open-source license allows anyone to use the library, on any vendors processor/FPGA/SoC, which may be controlling any vendors peripheral device (ADC, DAC, etc) either locally or remotely. This includes closed or open-source, commercial or non-commercial applications (subject to the LGPL license freedoms, obligations and restrictions). The examples and test applications (sometimes refered to as the iio-utils) are released seperately under the GNU General Public License (GPL) version 2.0 (at your option) any later version.
 
-License : [![License](https://img.shields.io/badge/license-LGPL2-blue.svg)](https://github.com/analogdevicesinc/libiio/blob/master/COPYING.txt)
+Library License : [![Library License](https://img.shields.io/badge/license-LGPL2-blue.svg)](https://github.com/analogdevicesinc/libiio/blob/master/COPYING.txt)
+Tests/Examples License : [![Application License](https://img.shields.io/badge/license-GPL2+-blue.svg)](https://github.com/analogdevicesinc/libiio/blob/master/COPYING_GPL.txt)
 Latest Release : [![GitHub release](https://img.shields.io/github/release/analogdevicesinc/libiio.svg)](https://github.com/analogdevicesinc/libiio/releases/latest)
 Downloads :  [![Github All Releases](https://img.shields.io/github/downloads/analogdevicesinc/libiio/total.svg)](https://github.com/analogdevicesinc/libiio/releases/latest)
 

examples/ad9361-iiostream.c

@@ -4,16 +4,19 @@
  * Copyright (C) 2014 IABG mbH
  * Author: Michael Feilen <feilen_at_iabg.de>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  **/
 
 #include <stdbool.h>

examples/ad9371-iiostream.c

@@ -5,16 +5,19 @@
  * Author: Michael Feilen <feilen_at_iabg.de>
  * Copyright (C) 2017 Analog Devices Inc.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  **/
 
 #include <stdbool.h>

examples/adrv9009-iiostream.c

@@ -5,16 +5,19 @@
  * Author: Michael Feilen <feilen_at_iabg.de>
  * Copyright (C) 2019 Analog Devices Inc.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  **/
 
 #include <stdbool.h>

examples/dummy-iiostream.c

@@ -13,16 +13,22 @@
  * Copyright (C) 2014 IABG mbH
  * Author: Michael Feilen <feilen_at_iabg.de>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+/*
  * How to setup the sample IIO dummy device and hrtimer trigger:
  *
  * 1. Check if `configfs` is already mounted

examples/iio-monitor.c

@@ -4,16 +4,19 @@
  * Copyright (C) 2014 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #define _BSD_SOURCE

mainpage.dox

@@ -5,12 +5,13 @@
 
 @section license License
 Libiio has been developed and is released under the terms of the GNU Lesser General Public
-License, version 2. This open-source license allows anyone to use the library for proprietary or
-open-source, commercial or non-commercial applications. This choice was motivated by the fact
-that Analog Devices is a company that principally sells hardware, and this library provides the
-clients with a better and easier way of using this hardware.
+License, version 2 or (at your option) any later version.
+This open-source license allows anyone to use the library for proprietary or
+open-source, commercial or non-commercial applications.
 
-The full terms of the license can be found here: http://opensource.org/licenses/LGPL-2.1
+Seperately, the IIO Library also includes a set of test examples and utilities, (collectively known as iio-utils) which are developed and released under the terms of the  GNU General Public License, version 2 or (at your option) any later version.
+
+The full terms of the library license can be found at: http://opensource.org/licenses/LGPL-2.1 and the iio-utils license can be found at: https://opensource.org/licenses/GPL-2.0
 
 @section code_model Code Model
 The basic bricks of the libiio API are the iio_context, iio_device, iio_channel and iio_buffer classes.

tests/iio_adi_xflow_check.c

@@ -1,18 +1,21 @@
 /*
- * iio_adi_dac_overflow_test
+ * iio_adi_dac_overflow_test - part of the IIO utilities
  *
  * Copyright (C) 2015 Analog Devices, Inc.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <errno.h>

tests/iio_attr.c

@@ -1,20 +1,23 @@
 /*
- * libiio - Library for interfacing industrial I/O (IIO) devices
+ * iio_attr - part of the Industrial I/O (IIO) utilities
  *
- * Copyright (C) 2014, 2017 Analog Devices, Inc.
+ * Copyright (C) 2014 - 2020 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *         Robin Getz <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <errno.h>

tests/iio_genxml.c

@@ -1,19 +1,22 @@
 /*
- * libiio - Library for interfacing industrial I/O (IIO) devices
+ * iio_genxml - Part of the Industrial I/O (IIO) utilities
  *
  * Copyright (C) 2014 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <getopt.h>

tests/iio_info.c

@@ -1,19 +1,22 @@
 /*
- * libiio - Library for interfacing industrial I/O (IIO) devices
+ * iio_info - Part of Industrial I/O (IIO) utilities
  *
  * Copyright (C) 2014 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <errno.h>

tests/iio_readdev.c

@@ -1,19 +1,22 @@
 /*
- * libiio - Library for interfacing industrial I/O (IIO) devices
+ * iio_readdev - Part of the Industrial I/O (IIO) utilities
  *
  * Copyright (C) 2014 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <errno.h>

tests/iio_reg.c

@@ -1,19 +1,22 @@
 /*
- * libiio - Library for interfacing industrial I/O (IIO) devices
+ * iio_reg - Part of the industrial I/O (IIO) utilities
  *
  * Copyright (C) 2015 Analog Devices, Inc.
  * Author: Paul Cercueil <[email protected]>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * 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 2
+ * of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * 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
- * Lesser General Public License for more details.
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  * */
 
 #include <errno.h>