doc: Add additional run-time licensing info for Android

Add the documentation detailing the license of the libstdc++
library which is a dependency of Qt apps on Android.

Task-number: QTBUG-31241
Change-Id: I90f3eea86cc89aba1b80bee9c249caee8d223cfa
Reviewed-by: Sami Makkonen <sami.makkonen@digia.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

2 files changed, 148 insertions, 0 deletions

diff --git a/doc/src/legal/android-runtime-licensing-notes.qdoc b/doc/src/legal/android-runtime-licensing-notes.qdoc
new file mode 100644
index 00000000..d7e75ed6
--- /dev/null
+++ b/doc/src/legal/android-runtime-licensing-notes.qdoc
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file.  Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+\page android_runtime_licensing_notes.html
+\title Android GNU C++ Run-time Licensing
+\ingroup licensing
+\brief Provides additional information about the licensing of run-time dependencies of Qt for Android
+
+The Android platform does not provide a full implementation of the C++ run-time. Instead,
+apps that depend on features such as STL, exceptions, or RTTI, must include an additional
+native run-time library that provides the features they need.
+
+Qt will by default use the GNU libstdc++ library which is distributed as part of the Google Android NDK.
+Qt Creator will copy this library into the .APK for any Qt-based Android app. The library will then be
+loaded by the app on start-up to meet the run-time requirements of Qt.
+
+The GNU C++ run-time is licensed under the
+\l{http://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_gpl.html}{GNU General Public License version 3} with
+an exception which grants permission for run-time linking and usage of the library by an application which
+would otherwise violate the terms of the main license. For more information about this exception, see
+\l{http://gcc.gnu.org/onlinedocs/libstdc++/manual/license.html}{the official license page}.
+
+\section1 Information About License From GCC Headers
+
+This file is part of the GNU ISO C++ Library.  This library 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, or (at your option) any later
+version.
+
+This library 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.
+
+\section1 The GCC Run-time Library Exception
+
+GCC RUNTIME LIBRARY EXCEPTION
+
+Version 3.1, 31 March 2009
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+This GCC Runtime Library Exception ("Exception") is an additional
+permission under section 7 of the GNU General Public License, version
+3 ("GPLv3"). It applies to a given file (the "Runtime Library") that
+bears a notice placed by the copyright holder of the file stating that
+the file is governed by GPLv3 along with this Exception.
+
+When you use GCC to compile a program, GCC may combine portions of
+certain GCC header files and runtime libraries with the compiled
+program. The purpose of this Exception is to allow compilation of
+non-GPL (including proprietary) programs to use, in this way, the
+header files and runtime libraries covered by this Exception.
+
+0. Definitions.
+
+A file is an "Independent Module" if it either requires the Runtime
+Library for execution after a Compilation Process, or makes use of an
+interface provided by the Runtime Library, but is not otherwise based
+on the Runtime Library.
+
+"GCC" means a version of the GNU Compiler Collection, with or without
+modifications, governed by version 3 (or a specified later version) of
+the GNU General Public License (GPL) with the option of using any
+subsequent versions published by the FSF.
+
+"GPL-compatible Software" is software whose conditions of propagation,
+modification and use would permit combination with GCC in accord with
+the license of GCC.
+
+"Target Code" refers to output from any compiler for a real or virtual
+target processor architecture, in executable form or suitable for
+input to an assembler, loader, linker and/or execution
+phase. Notwithstanding that, Target Code does not include data in any
+format that is used as a compiler intermediate representation, or used
+for producing a compiler intermediate representation.
+
+The "Compilation Process" transforms code entirely represented in
+non-intermediate languages designed for human-written code, and/or in
+Java Virtual Machine byte code, into Target Code. Thus, for example,
+use of source code generators and preprocessors need not be considered
+part of the Compilation Process, since the Compilation Process can be
+understood as starting with the output of the generators or
+preprocessors.
+
+A Compilation Process is "Eligible" if it is done using GCC, alone or
+with other GPL-compatible software, or if it is done without using any
+work based on GCC. For example, using non-GPL-compatible Software to
+optimize any GCC intermediate representations would not qualify as an
+Eligible Compilation Process.
+
+1. Grant of Additional Permission.
+
+You have permission to propagate a work of Target Code formed by
+combining the Runtime Library with Independent Modules, even if such
+propagation would otherwise violate the terms of GPLv3, provided that
+all Target Code was generated by Eligible Compilation Processes. You
+may then convey such a combination under terms of your choice,
+consistent with the licensing of the Independent Modules.
+
+2. No Weakening of GCC Copyleft.
+
+The availability of this Exception does not imply any general
+presumption that third-party software is unaffected by the copyleft
+requirements of the license of GCC.
+
+
+
+
diff --git a/doc/src/platforms/android.qdoc b/doc/src/platforms/android.qdoc
index 46ea5968..98af19da 100644
--- a/doc/src/platforms/android.qdoc
+++ b/doc/src/platforms/android.qdoc
@@ -149,5 +149,6 @@ AVDs found.
 \list
  \li \l{Platform and Compiler Notes - Android}{Platform Notes}
  \li \l{Qt Creator: Deploying Applications to Android Devices}
+ \li \l{Android GNU C++ run-time licensing}
 \endlist
 */