From: Bartosz Golaszewski <brgl@bgdev.pl>
To: Kent Gibson <warthog618@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>
Cc: linux-gpio@vger.kernel.org,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [libgpiod][PATCH 3/3] licensing: relicense C++ library code under LGPL-3.0-or-later
Date: Wed, 17 Feb 2021 14:02:25 +0100 [thread overview]
Message-ID: <20210217130225.6378-4-brgl@bgdev.pl> (raw)
In-Reply-To: <20210217130225.6378-1-brgl@bgdev.pl>
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Using LGPL-2.1 for C++ library code is an issue raised several times on
the linux-gpio mailing list. Programs using C++ libraries often include
significant portions of code generated behind the scenes from C++ headers
(via templates, default implementations etc.).
Section 3 of LGPL-3.0 clarifies the use of code defined in or generated
from C++ headers so this changset proposes to use LGPL-3.0 for all C++
library code in libgpiod.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
LICENSES/LGPL-3.0-or-later.txt | 165 +++++++++++++++++++++++++++++
Makefile.am | 1 +
bindings/cxx/chip.cpp | 2 +-
bindings/cxx/gpiod.hpp | 2 +-
bindings/cxx/iter.cpp | 2 +-
bindings/cxx/line.cpp | 2 +-
bindings/cxx/line_bulk.cpp | 2 +-
bindings/cxx/tests/gpio-mockup.cpp | 2 +-
bindings/cxx/tests/gpio-mockup.hpp | 2 +-
9 files changed, 173 insertions(+), 7 deletions(-)
create mode 100644 LICENSES/LGPL-3.0-or-later.txt
diff --git a/LICENSES/LGPL-3.0-or-later.txt b/LICENSES/LGPL-3.0-or-later.txt
new file mode 100644
index 0000000..0a04128
--- /dev/null
+++ b/LICENSES/LGPL-3.0-or-later.txt
@@ -0,0 +1,165 @@
+ 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.
+
+ "The Library" refers to a covered work governed by this License,
+other than 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 of a class defined by the Library is deemed a mode
+of using an interface provided by the Library.
+
+ A "Combined Work" is a work produced by combining or linking an
+Application with the Library. The particular version of the Library
+with which the Combined Work was made is also called the "Linked
+Version".
+
+ The "Minimal Corresponding Source" for a Combined Work means the
+Corresponding Source for the Combined Work, excluding any source code
+for portions of the Combined Work that, considered in isolation, are
+based on the Application, and not on the Linked Version.
+
+ The "Corresponding Application Code" for a Combined Work means the
+object code and/or source code for the Application, including any data
+and utility programs needed for reproducing the Combined Work from the
+Application, but 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 refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+ a) under this License, provided that you make a good faith effort to
+ ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
+ whatever part of its purpose remains meaningful, or
+
+ b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+ 3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
+a header file that is part of the Library. You may convey such object
+code under terms 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.
diff --git a/Makefile.am b/Makefile.am
index 0e44305..dfc6c95 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@ EXTRA_DIST = \
LICENSES/GPL-2.0-only.txt \
LICENSES/GPL-2.0-or-later.txt \
LICENSES/LGPL-2.1-or-later.txt \
+ LICENSES/LGPL-3.0-or-later.txt \
LICENSES/Linux-syscall-note.txt
if WITH_TOOLS
diff --git a/bindings/cxx/chip.cpp b/bindings/cxx/chip.cpp
index 49c5602..5b8125b 100644
--- a/bindings/cxx/chip.cpp
+++ b/bindings/cxx/chip.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
+// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
#include <functional>
diff --git a/bindings/cxx/gpiod.hpp b/bindings/cxx/gpiod.hpp
index 84669e7..d987b3a 100644
--- a/bindings/cxx/gpiod.hpp
+++ b/bindings/cxx/gpiod.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
/* SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com> */
#ifndef __LIBGPIOD_GPIOD_CXX_HPP__
diff --git a/bindings/cxx/iter.cpp b/bindings/cxx/iter.cpp
index 0d7e90a..eba7d30 100644
--- a/bindings/cxx/iter.cpp
+++ b/bindings/cxx/iter.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
+// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
#include <gpiod.hpp>
diff --git a/bindings/cxx/line.cpp b/bindings/cxx/line.cpp
index d24df18..1d114ac 100644
--- a/bindings/cxx/line.cpp
+++ b/bindings/cxx/line.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
+// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
#include <gpiod.hpp>
diff --git a/bindings/cxx/line_bulk.cpp b/bindings/cxx/line_bulk.cpp
index b31efb5..d40364d 100644
--- a/bindings/cxx/line_bulk.cpp
+++ b/bindings/cxx/line_bulk.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
+// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
#include <gpiod.hpp>
diff --git a/bindings/cxx/tests/gpio-mockup.cpp b/bindings/cxx/tests/gpio-mockup.cpp
index 54e69b7..2e99dd4 100644
--- a/bindings/cxx/tests/gpio-mockup.cpp
+++ b/bindings/cxx/tests/gpio-mockup.cpp
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: LGPL-2.1-or-later
+// SPDX-License-Identifier: LGPL-3.0-or-later
// SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com>
#include <system_error>
diff --git a/bindings/cxx/tests/gpio-mockup.hpp b/bindings/cxx/tests/gpio-mockup.hpp
index 7a071fb..9ca27bd 100644
--- a/bindings/cxx/tests/gpio-mockup.hpp
+++ b/bindings/cxx/tests/gpio-mockup.hpp
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/* SPDX-License-Identifier: LGPL-3.0-or-later */
/* SPDX-FileCopyrightText: 2017-2021 Bartosz Golaszewski <bartekgola@gmail.com> */
#ifndef __GPIOD_CXX_TEST_HPP__
--
2.29.1
next prev parent reply other threads:[~2021-02-17 13:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 13:02 [libgpiod][PATCH 0/3] licensing: try to get licensing right Bartosz Golaszewski
2021-02-17 13:02 ` [libgpiod][PATCH 1/3] licensing: make the project REUSE-compliant Bartosz Golaszewski
2021-02-17 13:02 ` [libgpiod][PATCH 2/3] licensing: relicense non-library code under GPL-2.0-or-later Bartosz Golaszewski
2021-02-17 13:02 ` Bartosz Golaszewski [this message]
2021-02-18 1:21 ` [libgpiod][PATCH 0/3] licensing: try to get licensing right Kent Gibson
2021-03-02 9:05 ` Linus Walleij
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