.codechecker/config.json

+{
+  "analyze": [
+    "--disable", "default",
+    "--analyzers=clang-tidy",
+    "--file=*/dune-common/*.cc",
+    "--skip", ".codechecker/skipfile",
+    "--disable", "clang-diagnostic-deprecated-copy",
+    "--disable", "clang-diagnostic-unused"
+  ],
+  "parse": [
+    "--file=*/dune-common/*"
+  ]
+}

.codechecker/config.json.license

+SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception

.codechecker/skipfile

+-*/densematrixassignmenttest.cc
+-*/genericiterator_compile_fail.cc
+-*/check_fvector_size_fail.cc
+-*/assertandreturntest.cc

.codechecker/skipfile.license

+SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception

.gitignore

-# Stuff to ignore recursively
-*.la
-*.lo
-*.log
-*.o
-*.trs
+# SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+
+# ignore all build folders
+/build*/
+# ignore backup files
 *~
+# ignore Python files
 *.pyc
-.deps/
-.libs/
-Makefile
-Makefile.in
-TAGS
+# ignore files generated during python setup.py sdist
+MANIFEST
+_skbuild/
+dist
+*.egg-info/
+# ignore macOS filesystem
+.DS_Store
 
-# Stuff to ignore in this directory only
-/aclocal.m4
-/autom4te.cache/
-/build-*/
-/compile
-/config.guess
-/config.h
-/config.h.in
-/config.log
-/config.lt
-/config.status
-/config.sub
-/configure
-/configure
-/configure.lineno
-/depcomp
-/dependencies.m4
-/dune-common-*.tar.gz
-/dune-common-?.?
-/dune-common.pc
-/dune.css
-/install-sh
-/libtool
-/ltmain.sh
-/missing
-/mkinstalldirs
-/stamp-h1
-/test-driver

.gitlab-ci.yml

+# SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+
+---
+include:
+  - remote: 'https://gitlab.dune-project.org/core/ci-config/raw/master/config/common/master.yml'
+  - remote: 'https://gitlab.dune-project.org/core/ci-config/raw/master/jobs/common/master.yml'
+
+before_script:
+  - . /duneci/bin/duneci-init-job
+
+variables:
+  DUNECI_TEST_LABELS: quick
+  DUNE_TEST_EXPECTED_VC_IMPLEMENTATION: SSE2
+  PIP_DEFAULT_TIMEOUT: 0
+  DUNE_LOG_LEVEL:     DEBUG
+
+debian:11 gcc-10-20-expensive:
+  extends: .common
+  # This image has Vc
+  image: registry.dune-project.org/docker/ci/debian:11
+  # allow expensive tests
+  variables:
+    DUNECI_CXXFLAGS: -mavx
+    DUNECI_TEST_LABELS: ""
+    DUNECI_TOOLCHAIN: gcc-10-20
+    DUNECI_CMAKE_FLAGS: '-DDUNE_ENABLE_PYTHONMODULE_PRECOMPILE:BOOL=TRUE'
+    DUNE_TEST_EXPECTED_VC_IMPLEMENTATION: AVX
+  # require AVX to properly test Vc
+  tags: [duneci, "iset:avx"]
+  # allowed to fail to e.g. do no hold up a merge when a runner supporting avx
+  # is unavailable
+  allow_failure: true
+
+core-modules-test:
+  stage: downstream
+  inherit:
+    variables: false # do not inherit global variables
+  variables:
+    CI_BUILD_REF_NAME: $CI_COMMIT_REF_NAME
+    DUNECI_TEST_LABELS: ""
+  trigger:
+    project: infrastructure/dune-nightly-test
+    branch: core
+    strategy: depend
+  rules:
+    - when: manual
+      allow_failure: false
+
+full-system-test:
+  stage: downstream
+  inherit:
+    variables: false # do not inherit global variables
+  variables:
+    CI_BUILD_REF_NAME: $CI_COMMIT_REF_NAME
+    DUNECI_TEST_LABELS: ""
+  trigger:
+    project: infrastructure/dune-nightly-test
+    branch: master
+    strategy: depend
+  rules:
+    - when: manual
+      allow_failure: true
+
+# Check for spelling mistakes in text
+code-spelling-check:
+  stage: .pre
+  tags: [duneci]
+  image: registry.dune-project.org/docker/ci/debian:11
+  script:
+  - codespell
+    --ignore-words-list te,inout,incrementall,iif,\trun,referr,ba
+    --skip pybind11
+
+reuse:
+  stage: .pre
+  image:
+    name: docker.io/fsfe/reuse:latest
+    entrypoint: [""]
+  tags: [duneci]
+  before_script: ""
+  script:
+    - reuse lint

.mailmap

+# SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+
 Benjamin Bykowski <benjamin.bykowski@rwth-aachen.de> Convex Function <329364@wright.mathepool.rwth-aachen.de>
 

.reuse/dep5

+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: dune-common
+Upstream-Contact: Dune Developers <dune-devel@lists.dune-project.org>
+Source: https://dune-project.org
+
+Files:
+  dune/python/pybind11/*.h
+  dune/python/pybind11/_version.py
+Copyright:
+  Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
+  Copyright (c) 2016 Trent Houliston <trent@houliston.me>
+  Copyright (c) 2016 Klemens Morgenstern <klemens.morgenstern@ed-chemnitz.de>
+  Copyright (c) 2016 Andreas Dedner <a.s.dedner@warwick.ac.uk>
+  Copyright (c) 2016 Martin Nolte <nolte@mathematik.uni-freiburg.de>
+  Copyright (c) 2017 Henry F. Schreiner
+  Copyright (c) 2016 Sergey Lyskov and Wenzel Jakob
+License: BSD-3-Clause

CMakeLists.txt

-# set up project
-project("dune-common" C CXX)
+# SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
 
-# general stuff
-cmake_minimum_required(VERSION 2.8.6)
+cmake_minimum_required(VERSION 3.16)
+project(dune-common LANGUAGES C CXX)
+
+# CMake 3.29.1 is incompatible as it removed PACKAGE_PREFIX_DIR
+if (CMAKE_VERSION VERSION_EQUAL 3.29.1)
+  message(FATAL_ERROR "CMake 3.29.1 is not compatible with Dune. Use a different CMake version.")
+endif()
 
 # make sure our own modules are found
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake/modules")
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/modules)
 
-# set the script dir for the macros.
-set(DUNE_COMMON_SCRIPT_DIR "${PROJECT_SOURCE_DIR}/cmake/scripts")
+set(THREADS_PREFER_PTHREAD_FLAG TRUE CACHE BOOL "Prefer -pthread compiler and linker flag")
 
 #include the dune macros
 include(DuneMacros)
 
+# deactivate global include-directories for dune-common
+dune_policy(SET DP_DEFAULT_INCLUDE_DIRS NEW)
+
+# deactivate global calls to add_dune_all_flags in tests
+dune_policy(SET DP_TEST_ADD_ALL_FLAGS NEW)
+
 # start a dune project with information from dune.module
 dune_project()
 
+# Create a target for dune-common with a Dune::Common alias
+dune_add_library(dunecommon EXPORT_NAME Common NAMESPACE Dune::)
+
+# set include directories for dunecommon library
+dune_default_include_directories(dunecommon PUBLIC)
+
+# minimal c++ standard required
+target_compile_features(dunecommon PUBLIC cxx_std_20)
+
+# Set properties to the dunecommon target
+add_dune_blas_lapack_flags(dunecommon)
+add_dune_tbb_flags(dunecommon)
+
+# collect dependencies to be added into the dune-common-config.cmake files
+set(DUNE_COMMON_PACKAGE_DEPENDENCIES
+  [[set(THREADS_PREFER_PTHREAD_FLAG TRUE CACHE BOOL "Prefer -pthread compiler and linker flag")]])
+
+# since dunecommon is exported its linked libs must be provided downstream too
+if (LAPACK_FOUND)
+  list(APPEND DUNE_COMMON_PACKAGE_DEPENDENCIES "find_dependency(LAPACK)")
+elseif (BLAS_FOUND)
+  list(APPEND DUNE_COMMON_PACKAGE_DEPENDENCIES "find_dependency(BLAS)")
+endif()
+if (Threads_FOUND)
+  list(APPEND DUNE_COMMON_PACKAGE_DEPENDENCIES "find_dependency(Threads)")
+endif()
+if (TBB_FOUND)
+  list(APPEND DUNE_COMMON_PACKAGE_DEPENDENCIES "find_dependency(TBB)")
+endif()
+
 # add subdirectories to execute CMakeLists.txt there
-add_subdirectory("lib")
-add_subdirectory("share")
-add_subdirectory("dune")
-add_subdirectory("bin")
-add_subdirectory("m4")
-add_subdirectory("am")
-add_subdirectory("doc")
-add_subdirectory("cmake/modules")
-add_subdirectory("cmake/scripts")
-
-# finalize the dune project, e.g. generating config.h etc.
+add_subdirectory(bin)
+add_subdirectory(cmake)
+add_subdirectory(doc)
+add_subdirectory(dune)
+add_subdirectory(lib)
+add_subdirectory(share)
+
+# if Python bindings are enabled, include necessary sub directories.
+if(DUNE_ENABLE_PYTHONBINDINGS)
+  add_subdirectory(python)
+endif()
+
+# write contents into DUNE_CUSTOM_PKG_CONFIG_SECTION, which will be injected into dune-common-config.cmake
+string(JOIN "\n" DUNE_CUSTOM_PKG_CONFIG_SECTION
+  # make sure that Find<module>.cmake provided by dune-common can be found by cmake
+  [[list(APPEND CMAKE_MODULE_PATH "${dune-common_MODULE_PATH}")]]
+  ${DUNE_COMMON_PACKAGE_DEPENDENCIES}
+)
+
+# finalize the dune project, e.g. generating config.h, dune-common-config.cmake, etc.
 finalize_dune_project()

CONTRIBUTING.md

+<!--
+SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+-->
+
 Contributing to the Dune Core Modules
 =====================================
 
@@ -8,12 +13,13 @@ explains how to get those changes to us and what to take care of.
 Take a look at the DUNE coding style
 ------------------------------------
 
-Your work will enjoy much smoother sailing if you take a look at the Coding
-Style and try to stick to it with your changes. We understand that everyone
-has their personal preferences and that there is no such thing as the *right*
-coding style (in the end, it's a matter of taste), but DUNE is a pretty large
-project, and a consistent way of doing things really helps a lot when trying
-to find your way around a body of code as big as DUNE.
+Your work will enjoy much smoother sailing if you take a look at the [Coding
+Style](https://dune-project.org/dev/codingstyle/) and try to stick to it with
+your changes. We understand that everyone has their personal preferences and
+that there is no such thing as the *right* coding style (in the end, it's a
+matter of taste), but DUNE is a pretty large project, and a consistent way of
+doing things really helps a lot when trying to find your way around a body of
+code as big as DUNE.
 
 Make sure to install the Whitespace Hook before starting to work, because
 our repositories enforce certain rules about whitespace and will not accept
@@ -21,6 +27,33 @@ commits that violate those rules. And a developer will be much more motivated
 to merge your patch if doing so does not involve fixing a bunch of tab-based
 indentations that you inadvertently added as part of your changes
 
+Tests / Automated Testing
+-------------------------
+
+When contributing a new feature to Dune it should be accompanied by a unit test.
+There are currently untested features and adding unit tests for such features
+is always a good contribution.
+When modifying a currently untested feature, add a unit test.
+
+Unit tests in the Dune core modules are added in the `test` directory
+of the folder containing the header with the feature code.
+
+In Dune modules, tests are added to the
+test suite (which is tested automatically with Gitlab-CI, e.g., when opening a merge request)
+by adding them with the [`dune_add_test` function](https://gitlab.dune-project.org/core/dune-common/-/blob/master/cmake/modules/DuneTestMacros.cmake)
+in the `CMakeLists.txt` file of the test folder.
+Using `dune_add_test` ensures that the test is added to the top level `build_tests` target
+which is used in the CI framework to build all tests (and can of course
+also be used locally to build all tests of a Dune module, `make build_tests`).
+The function also provides several convenient features such as the possibility
+to automatically run a test several times with different numbers of processors.
+
+If a specific more complex test setup is not supported by `dune_add_test`,
+the test has to be added explicitly to the `build_tests` target. However,
+for such cases we recommend instead to try to improve the `dune_add_test`
+function to support the use case.
+
+
 Use Git to your advantage
 -------------------------
 
@@ -67,4 +100,4 @@ You should get your changes to us in the following way:
 
 If you have any questions or complaints about this workflow of
 contributing to Dune, please rant on the
-[dune-devel mailing list](mailto:dune-devel@dune-project.org).
\ No newline at end of file
+[dune-devel mailing list](mailto:dune-devel@lists.dune-project.org).

INSTALL

+<!--
+SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+-->
+
 Installation Instructions
 =========================
 
@@ -14,8 +19,8 @@ list of available modules.
 
 To compile the modules Dune has to check several components of
 your system and whether prerequisites within the modules are met. For
-the ease of users we have designed a custom build system on top of the
-automake tools. Run
+the ease of users we have designed a custom build system on top of CMake.
+Run
 
   ./dune-common/bin/dunecontrol all
 
@@ -37,7 +42,7 @@ need to run
 to install Dune (you may need root-permissions for the install
 part depending on the prefix set)
 
-A more comprehensive introduction to the build system can be found in [2].
+A more comprehensive introduction to the build system can be found in [0].
 
 Passing options to the build process
 ------------------------------------
@@ -45,50 +50,31 @@ Passing options to the build process
 Using the dunecontrol script the following atomic commands can be
 executed:
 
-- autogen (runs autogen in each module, only needed when downloaded
-  via svn)
-- configure (runs the configure tests for each module
-- exec (executes a command in each module directory)
-- make (runs make for each module)
-- update (updates the svn version)
+- configure (runs the CMake configuration tests for each module)
+- exec (executes a command in each module source directory)
+- bexec (executes a command in each module build directory)
+- make (builds each module)
+- update (updates the Git or Subversion version)
 
-The composite command all simply runs autogen, configure and make for
+The composite command all simply runs configure and make for
 each module.
 
-As it is often not convenient (and for the target all impossible) to
-specify the options for each command as parameters after the call, one
-can pass the options via file specified by the --opts=<file>
-option. For each atomic command one specify the options via a line
-
-<COMMAND_UPPERCASE>_FLAGS=<flags> # e.g.: MAKE_FLAGS=install
-
-The available options for make and svn are the natural ones. The
-configure commands available can be found by issuing
-
-dunecontrol --only=dune-common configure --help
-
-and for autogen by
-
-dunecontrol --only=dune-common autogen --help
-
-(In the svn version this has to be called after running autogen.)
+As it is often not convenient to specify the desired options after
+the duncontroll call, one can pass the options via a file specified
+by the --opts=<file> option. Specify the options via the variable
 
+  CMAKE_FLAGS=<flags>
 
 An example of an options file is
 
-  # use a special compiler (g++ version 3.4) and install to a custom
-  # directory, default is /usr/local/bin
-  CONFIGURE_FLAGS="CXX=g++-3.4 --prefix='/tmp/Hu Hu'"
-  # Set the default target of make to install. Now the call above will
-  # not just build the DUNE modules but also install it
-   MAKE_FLAGS=install
-  # The default versions of automake and autogen are not sufficient
-  # therefore we need to specify what versions to use
-  AUTOGEN_FLAGS="--ac=2.59 --am=1.9
+  # use a special compiler (g++ version 14.0),
+  # install to a custom directory, default is /usr/local/bin,
+  # disable the external library SuperLU,
+  # and use Ninja-build instead of make as the build-tool
+  CMAKE_FLAGS="-DCMAKE_CXX_COMPILER=g++-14 -DCMAKE_INSTALL_PREFIX='/tmp/HuHu' -DCMAKE_DISABLE_FIND_PACKAGE_SuperLU=true -GNinja"
 
 Links
 -----
 
-0. http://www.dune-project.org/doc/installation-notes.html
-1. http://www.dune-project.org/download.html
-2. http://dune-project.org/doc/buildsystem/buildsystem.pdf
+0. https://www.dune-project.org/doc/installation
+1. https://dune-project.org/releases/

LICENSE.md

 Copyright holders:
 ==================
 
-2015          Marco Agnese
+2015--2017    Marco Agnese
 2015          Martin Alkämper
-2003--2010    Peter Bastian
-2004--2015    Markus Blatt
+2003--2019    Peter Bastian
+2004--2024    Markus Blatt
 2013          Andreas Buhr
-2011--2015    Ansgar Burchardt
+2020--2023    Samuel Burbulla
+2011--2023    Ansgar Burchardt
 2004--2005    Adrian Burri
 2014          Benjamin Bykowski (may appear in the logs as "Convex Function")
 2014          Marco Cecchetti
-2006--2014    Andreas Dedner
+2018          Matthew Collins
+2006--2024    Andreas Dedner
+2018--2021    Nils-Arne Dreier
 2003          Marc Droske
-2003--2015    Christian Engwer
-2004--2015    Jorrit Fahlke
-2008--2013    Bernd Flemisch
+2003--2024    Christian Engwer
+2004--2020    Jorrit Fahlke
+2016          Thomas Fetzer
+2008--2017    Bernd Flemisch
 2013--2014    Christoph Gersbacher
+2017--2020    Janick Gerstenberger
 2015          Stefan Girke
-2005--2015    Carsten Gräser
-2015          Felix Gruber
-2010--2015    Christoph Grüninger
-2006          Bernhard Haasdonk
-2015          Claus-Justus Heine
+2015--2017    Felix Gruber
+2005--2024    Carsten Gräser
+2010--2024    Christoph Grüninger
+2006          Bernard Haasdonk
+2015--2020    René Heß
+2015--2018    Claus-Justus Heine
+2017--2019    Stephan Hilb
+2017--2021    Lasse Hinrichsen
 2012--2013    Olaf Ippisch
-2013--2015    Dominic Kempf
+2020--2022    Patrick Jaap
+2020          Liam Keegan
+2013--2022    Dominic Kempf
 2009          Leonard Kern
+2017--2018    Daniel Kienle
 2013          Torbjörn Klatt
-2003--2015    Robert Klöfkorn
+2003--2024    Robert Klöfkorn
+2017--2024    Timo Koch
 2005--2007    Sreejith Pulloor Kuttanikkad
-2012--2014    Arne Morten Kvarving
+2012--2016    Arne Morten Kvarving
 2010--2014    Andreas Lauser
+2016--2021    Tobias Leibner
+2015          Lars Lubkoll
+2012--2017    Tobias Malkmus
 2007--2011    Sven Marnach
-2012--2015    Tobias Malkmus
-2010          Rene Milk
-2011--2015    Steffen Müthing
+2010--2017    René Milk
+2022--2024    Alexander Müller
+2019--2020    Felix Müller
+2011--2019    Steffen Müthing
+2018--2024    Lisa Julia Nebel
 2003--2006    Thimo Neubauer
 2011          Rebecca Neumann
-2008--2015    Martin Nolte
+2008--2018    Martin Nolte
 2014          Andreas Nüßing
 2004--2005    Mario Ohlberger
 2014          Steffen Persvold
-2008--2014    Elias Pipping
+2008--2017    Elias Pipping
+2021          Joscha Podlesny
 2011          Dan Popovic
+2017--2024    Simon Praetorius
 2009          Atgeirr Rasmussen
-2003--2015    Oliver Sander
+2017--2020    Lukas Renelt
+2019--2024    Santiago Ospina De Los Ríos
 2006--2014    Uli Sack
+2003--2024    Oliver Sander
 2006          Klaus Schneider
 2004          Roland Schulz
+2015          Nicolas Schwenck
+2016          Linus Seelinger
 2009--2014    Bård Skaflestad
+2019          Henrik Stolzmann
+2024          Andreas Thune
 2012          Matthias Wohlmuth
-2011          Jonathan Youett
+2011--2016    Jonathan Youett
 
+This Licence does not cover the header files taken from the
+[pybind11 project][pybind11] which are included here
+(`dune/python/pybind11`) together with their own [licence file][pybind11Licence].
 
 The DUNE library and headers are licensed under version 2 of the GNU
 General Public License (see below), with a special exception for
@@ -412,3 +440,6 @@ proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
 library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
+
+[pybind11]: https://github.com/pybind/pybind11
+[pybind11Licence]: https://github.com/pybind/pybind11/blob/master/LICENSE

LICENSES/BSD-3-Clause.txt

+Copyright (c) <year> <owner>. 
+
+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, this list of conditions and the following disclaimer.
+
+2. 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.
+
+3. Neither the name of the copyright holder 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 HOLDER 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.

LICENSES/FSFAP.txt

+Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.  This file is offered as-is, without any warranty.

LICENSES/LicenseRef-GPL-2.0-only-with-DUNE-exception.txt

+The DUNE library and headers are licensed under version 2 of the GNU
+General Public License (see below), with a special exception for
+linking and compiling against DUNE, the so-called "runtime exception."
+The license is intended to be similar to the GNU Lesser General
+Public License, which by itself isn't suitable for a template library.
+
+The exact wording of the exception reads as follows:
+
+   As a special exception, you may use the DUNE source files as part
+   of a software library or application without restriction.
+   Specifically, if other files instantiate templates or use macros or
+   inline functions from one or more of the DUNE source files, or you
+   compile one or more of the DUNE source files and link them with
+   other files to produce an executable, this does not by itself cause
+   the resulting executable to be covered by the GNU General Public
+   License.  This exception does not however invalidate any other
+   reasons why the executable file might be covered by the GNU General
+   Public License.
+
+
+        GNU GENERAL PUBLIC LICENSE
+           Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+          Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
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+rights.
+
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+distribute and/or modify the software.
+
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+that everyone understands that there is no warranty for this free
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
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+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
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+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
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+copyright notice and disclaimer of warranty; keep intact all the
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
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+above, provided that you also meet all of these conditions:
+
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+
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+
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+    when run, you must cause it, when started running for such
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+These requirements apply to the modified work as a whole.  If
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+However, parties who have received copies, or rights, from you under
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+
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+
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+
+          NO WARRANTY
+
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+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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+
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+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+         END OF TERMS AND CONDITIONS
+
+      How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    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 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.
+
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+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

Makefile.am

-# we need the module file to be able to build via dunecontrol
-EXTRA_DIST= CMakeLists.txt dune.module
-
-# don't follow the full GNU-standard
-# we need automake 1.9 or newer
-AUTOMAKE_OPTIONS = foreign 1.9
-
-SUBDIRS = cmake dune lib share doc bin m4 am
-
-# use configured compiler for "make distcheck"
-DISTCHECK_CONFIGURE_FLAGS = CXX="$(CXX)" CC="$(CC)" --enable-parallel=@ENABLE_PARALLEL@ MPICC="$(MPICC)"
-
-include $(top_srcdir)/am/global-rules
-include $(top_srcdir)/am/top-rules
-
-# Distribute and install config.h.cmake
-configdir = $(datadir)/dune-common
-dist_config_DATA = config.h.cmake
-
-include $(top_srcdir)/am/cmake-pkg-config

README.SVN

-Preparing the SVN-sources
-=========================
-
-Additional to the software mentioned in README you'll need the
-following programs installed on your system:
-
-  automake >= 1.9
-
-  autoconf >= 2.62
-
-  libtool
-
-For the documentation to build you'll need doxygen, wml, convert and latex
-installed.
-
-Dune also features a self-test. As some components (e.g. Albert,
-UG) depend on external libraries their self-tests will only run if
-those libraries are found. The paths to their installation prefix
-would then need to be passed via --with-...= parameters to configure.
-
-Important!  If you don't want to develop Dune itself you won't need to
-provide external components! The Dune-library and -headers are
-independent of other libraries, instead the applications can choose
-which parts to use.
-

README.md

+<!--
+SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
+SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
+-->
+
 DUNE-library
 ============
 
@@ -13,7 +18,7 @@ DUNE was designed with flexibility in mind. It supports easy discretization
 using methods, like Finite Elements, Finite Volume and also Finite
 Differences. Through separation of data structures DUNE allows fast Linear
 Algebra like provided in the ISTL module, or usage of external libraries
-like blas.
+like BLAS.
 
 This package contains the basic DUNE common classes.
 
@@ -22,15 +27,20 @@ Dependencies
 
 dune-common depends on the following software packages
 
-- pkg-config
-- GNU C, C++ >=4.4
-  these might also work:
-  icc (C/C++) >= 13.0
-  Clang >= 3.2
+- CMake >= 3.16
+- Compiler (C, C++): GNU >= 10 or Clang >= 13
+- Library: GNU libstdc++ >= 10 or Clang libc++ >= 13
 
-The following software is recommend but optional:
+Other compilers may also work, but they must support C++20 to the same extent as
+the above. For an overview of the C++20 features supported by these versions, see
+https://en.cppreference.com/w/cpp/compiler_support. For compiling the Python
+bindings, libc++ is not currently supported.
 
+The following software is recommended but optional:
+
+- pkg-config
 - MPI (either OpenMPI, lam, or mpich suffice)
+- Python >= 3.7 (interpreter and development kit for building the python bindings)
 
 For a full explanation of the DUNE installation process please read
 the [installation notes][installation]. The following introduction is meant for
@@ -43,19 +53,19 @@ The DUNE-library and headers are licensed under version 2 of the GNU
 General Public License, with the so-called "runtime exception", as
 follows:
 
-   As a special exception, you may use the DUNE source files as part
-   of a software library or application without restriction.
-   Specifically, if other files instantiate templates or use macros or
-   inline functions from one or more of the DUNE source files, or you
-   compile one or more of the DUNE source files and link them with
-   other files to produce an executable, this does not by itself cause
-   the resulting executable to be covered by the GNU General Public
-   License.  This exception does not however invalidate any other
-   reasons why the executable file might be covered by the GNU General
-   Public License.
+> As a special exception, you may use the DUNE source files as part
+> of a software library or application without restriction.
+> Specifically, if other files instantiate templates or use macros or
+> inline functions from one or more of the DUNE source files, or you
+> compile one or more of the DUNE source files and link them with
+> other files to produce an executable, this does not by itself cause
+> the resulting executable to be covered by the GNU General Public
+> License.  This exception does not however invalidate any other
+> reasons why the executable file might be covered by the GNU General
+> Public License.
 
-This licence clones the one of the libstc++ library. For further
-implications of this library please see their [licence page][licence]
+This license clones the one of the libstdc++ library. For further
+implications of this library please see their [license page][license]
 
 See the file COPYING for full copying permissions.
 
@@ -68,10 +78,10 @@ full instructions please see [here][installation].
 Links
 -----
 
-0. http://www.dune-project.org/doc/installation-notes.html
-1. http://www.dune-project.org/download.html
-2. http://dune-project.org/doc/buildsystem/buildsystem.pdf
-3. http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.license
+0. https://www.dune-project.org/installation/installation-faq/
+1. https://dune-project.org/releases/
+2. https://dune-project.org/doc/buildsystem/
+3. https://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.license
 
-[installation]: http://www.dune-project.org/doc/installation-notes.html
-[licence]: http://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.license
\ No newline at end of file
+[installation]: https://www.dune-project.org/installation/installation-buildsrc
+[license]: https://gcc.gnu.org/onlinedocs/libstdc++/faq.html#faq.license

TODO

-Please see the Dune bugtracker at www.dune-project.org for things to do.
-