new file mode 100644
@@ -0,0 +1,1040 @@
+From e63a6950dbebf4dd95e5c74c423c06fd65df5182 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Antonio=20S=C3=A1nchez?= <cantonios@google.com>
+Date: Wed, 8 Feb 2023 01:25:06 +0000
+Subject: [PATCH] Remove LGPL Code and references.
+
+Upstream-Status: Backport [https://gitlab.com/libeigen/eigen/-/commit/e256ad1823c2eddd6954241ddc99bfeb7bb29cb3]
+---
+ COPYING.LGPL | 502 ------------------
+ COPYING.README | 16 +-
+ Eigen/src/Core/util/NonMPL2.h | 3 -
+ .../IncompleteCholesky.h | 3 +-
+ bench/tensors/eigen_sycl_bench.sh | 1 -
+ bench/tensors/eigen_sycl_bench_contract.sh | 2 +-
+ doc/PreprocessorDirectives.dox | 3 -
+ test/CMakeLists.txt | 1 -
+ test/mpl2only.cpp | 24 -
+ unsupported/Eigen/IterativeSolvers | 6 -
+ .../IterativeSolvers/ConstrainedConjGrad.h | 187 -------
+ .../IterativeSolvers/IterationController.h | 154 ------
+ 12 files changed, 4 insertions(+), 898 deletions(-)
+ delete mode 100644 COPYING.LGPL
+ delete mode 100644 Eigen/src/Core/util/NonMPL2.h
+ delete mode 100644 test/mpl2only.cpp
+ delete mode 100644 unsupported/Eigen/src/IterativeSolvers/ConstrainedConjGrad.h
+ delete mode 100644 unsupported/Eigen/src/IterativeSolvers/IterationController.h
+
+diff --git a/COPYING.LGPL b/COPYING.LGPL
+deleted file mode 100644
+index 4362b4915..000000000
+--- a/COPYING.LGPL
++++ /dev/null
+@@ -1,502 +0,0 @@
+- GNU LESSER GENERAL PUBLIC LICENSE
+- Version 2.1, February 1999
+-
+- Copyright (C) 1991, 1999 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.
+-
+-[This is the first released version of the Lesser GPL. It also counts
+- as the successor of the GNU Library Public License, version 2, hence
+- the version number 2.1.]
+-
+- Preamble
+-
+- The licenses for most software are designed to take away your
+-freedom to share and change it. By contrast, the GNU General Public
+-Licenses are intended to guarantee your freedom to share and change
+-free software--to make sure the software is free for all its users.
+-
+- This license, the Lesser General Public License, applies to some
+-specially designated software packages--typically libraries--of the
+-Free Software Foundation and other authors who decide to use it. You
+-can use it too, but we suggest you first think carefully about whether
+-this license or the ordinary General Public License is the better
+-strategy to use in any particular case, based on the explanations below.
+-
+- When we speak of free software, we are referring to freedom of use,
+-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 and use pieces of
+-it in new free programs; and that you are informed that you can do
+-these things.
+-
+- To protect your rights, we need to make restrictions that forbid
+-distributors to deny you these rights or to ask you to surrender these
+-rights. These restrictions translate to certain responsibilities for
+-you if you distribute copies of the library or if you modify it.
+-
+- For example, if you distribute copies of the library, whether gratis
+-or for a fee, you must give the recipients all the rights that we gave
+-you. You must make sure that they, too, receive or can get the source
+-code. If you link other code with the library, you must provide
+-complete object files to the recipients, so that they can relink them
+-with the library after making changes to the library and recompiling
+-it. And you must show them these terms so they know their rights.
+-
+- We protect your rights with a two-step method: (1) we copyright the
+-library, and (2) we offer you this license, which gives you legal
+-permission to copy, distribute and/or modify the library.
+-
+- To protect each distributor, we want to make it very clear that
+-there is no warranty for the free library. Also, if the library is
+-modified by someone else and passed on, the recipients should know
+-that what they have is not the original version, so that the original
+-author's reputation will not be affected by problems that might be
+-introduced by others.
+-
+- Finally, software patents pose a constant threat to the existence of
+-any free program. We wish to make sure that a company cannot
+-effectively restrict the users of a free program by obtaining a
+-restrictive license from a patent holder. Therefore, we insist that
+-any patent license obtained for a version of the library must be
+-consistent with the full freedom of use specified in this license.
+-
+- Most GNU software, including some libraries, is covered by the
+-ordinary GNU General Public License. This license, the GNU Lesser
+-General Public License, applies to certain designated libraries, and
+-is quite different from the ordinary General Public License. We use
+-this license for certain libraries in order to permit linking those
+-libraries into non-free programs.
+-
+- When a program is linked with a library, whether statically or using
+-a shared library, the combination of the two is legally speaking a
+-combined work, a derivative of the original library. The ordinary
+-General Public License therefore permits such linking only if the
+-entire combination fits its criteria of freedom. The Lesser General
+-Public License permits more lax criteria for linking other code with
+-the library.
+-
+- We call this license the "Lesser" General Public License because it
+-does Less to protect the user's freedom than the ordinary General
+-Public License. It also provides other free software developers Less
+-of an advantage over competing non-free programs. These disadvantages
+-are the reason we use the ordinary General Public License for many
+-libraries. However, the Lesser license provides advantages in certain
+-special circumstances.
+-
+- For example, on rare occasions, there may be a special need to
+-encourage the widest possible use of a certain library, so that it becomes
+-a de-facto standard. To achieve this, non-free programs must be
+-allowed to use the library. A more frequent case is that a free
+-library does the same job as widely used non-free libraries. In this
+-case, there is little to gain by limiting the free library to free
+-software only, so we use the Lesser General Public License.
+-
+- In other cases, permission to use a particular library in non-free
+-programs enables a greater number of people to use a large body of
+-free software. For example, permission to use the GNU C Library in
+-non-free programs enables many more people to use the whole GNU
+-operating system, as well as its variant, the GNU/Linux operating
+-system.
+-
+- Although the Lesser General Public License is Less protective of the
+-users' freedom, it does ensure that the user of a program that is
+-linked with the Library has the freedom and the wherewithal to run
+-that program using a modified version of the Library.
+-
+- The precise terms and conditions for copying, distribution and
+-modification follow. Pay close attention to the difference between a
+-"work based on the library" and a "work that uses the library". The
+-former contains code derived from the library, whereas the latter must
+-be combined with the library in order to run.
+-
+- GNU LESSER GENERAL PUBLIC LICENSE
+- TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+-
+- 0. This License Agreement applies to any software library or other
+-program which contains a notice placed by the copyright holder or
+-other authorized party saying it may be distributed under the terms of
+-this Lesser General Public License (also called "this License").
+-Each licensee is addressed as "you".
+-
+- A "library" means a collection of software functions and/or data
+-prepared so as to be conveniently linked with application programs
+-(which use some of those functions and data) to form executables.
+-
+- The "Library", below, refers to any such software library or work
+-which has been distributed under these terms. A "work based on the
+-Library" means either the Library or any derivative work under
+-copyright law: that is to say, a work containing the Library or a
+-portion of it, either verbatim or with modifications and/or translated
+-straightforwardly into another language. (Hereinafter, translation is
+-included without limitation in the term "modification".)
+-
+- "Source code" for a work means the preferred form of the work for
+-making modifications to it. For a library, complete source code means
+-all the source code for all modules it contains, plus any associated
+-interface definition files, plus the scripts used to control compilation
+-and installation of the library.
+-
+- Activities other than copying, distribution and modification are not
+-covered by this License; they are outside its scope. The act of
+-running a program using the Library is not restricted, and output from
+-such a program is covered only if its contents constitute a work based
+-on the Library (independent of the use of the Library in a tool for
+-writing it). Whether that is true depends on what the Library does
+-and what the program that uses the Library does.
+-
+- 1. You may copy and distribute verbatim copies of the Library's
+-complete source code as you receive it, in any medium, provided that
+-you conspicuously and appropriately publish on each copy an
+-appropriate copyright notice and disclaimer of warranty; keep intact
+-all the notices that refer to this License and to the absence of any
+-warranty; and distribute a copy of this License along with the
+-Library.
+-
+- 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.
+-
+- 2. You may modify your copy or copies of the Library or any portion
+-of it, thus forming a work based on the Library, and copy and
+-distribute such modifications or work under the terms of Section 1
+-above, provided that you also meet all of these conditions:
+-
+- a) The modified work must itself be a software library.
+-
+- b) You must cause the files modified to carry prominent notices
+- stating that you changed the files and the date of any change.
+-
+- c) You must cause the whole of the work to be licensed at no
+- charge to all third parties under the terms of this License.
+-
+- d) If a facility in the modified Library refers to a function or a
+- table of data to be supplied by an application program that uses
+- the facility, other than as an argument passed when the facility
+- is invoked, then you must make a good faith effort to ensure that,
+- in the event an application does not supply such function or
+- table, the facility still operates, and performs whatever part of
+- its purpose remains meaningful.
+-
+- (For example, a function in a library to compute square roots has
+- a purpose that is entirely well-defined independent of the
+- application. Therefore, Subsection 2d requires that any
+- application-supplied function or table used by this function must
+- be optional: if the application does not supply it, the square
+- root function must still compute square roots.)
+-
+-These requirements apply to the modified work as a whole. If
+-identifiable sections of that work are not derived from the Library,
+-and can be reasonably considered independent and separate works in
+-themselves, then this License, and its terms, do not apply to those
+-sections when you distribute them as separate works. But when you
+-distribute the same sections as part of a whole which is a work based
+-on the Library, the distribution of the whole must be on the terms of
+-this License, whose permissions for other licensees extend to the
+-entire whole, and thus to each and every part regardless of who wrote
+-it.
+-
+-Thus, it is not the intent of this section to claim rights or contest
+-your rights to work written entirely by you; rather, the intent is to
+-exercise the right to control the distribution of derivative or
+-collective works based on the Library.
+-
+-In addition, mere aggregation of another work not based on the Library
+-with the Library (or with a work based on the Library) on a volume of
+-a storage or distribution medium does not bring the other work under
+-the scope of this License.
+-
+- 3. You may opt to apply the terms of the ordinary GNU General Public
+-License instead of this License to a given copy of the Library. To do
+-this, you must alter all the notices that refer to this License, so
+-that they refer to the ordinary GNU General Public License, version 2,
+-instead of to this License. (If a newer version than version 2 of the
+-ordinary GNU General Public License has appeared, then you can specify
+-that version instead if you wish.) Do not make any other change in
+-these notices.
+-
+- Once this change is made in a given copy, it is irreversible for
+-that copy, so the ordinary GNU General Public License applies to all
+-subsequent copies and derivative works made from that copy.
+-
+- This option is useful when you wish to copy part of the code of
+-the Library into a program that is not a library.
+-
+- 4. You may copy and distribute the Library (or a portion or
+-derivative of it, under Section 2) in object code or executable form
+-under the terms of Sections 1 and 2 above provided that you accompany
+-it with the complete corresponding machine-readable source code, which
+-must be distributed under the terms of Sections 1 and 2 above on a
+-medium customarily used for software interchange.
+-
+- If distribution of object code is made by offering access to copy
+-from a designated place, then offering equivalent access to copy the
+-source code from the same place satisfies the requirement to
+-distribute the source code, even though third parties are not
+-compelled to copy the source along with the object code.
+-
+- 5. A program that contains no derivative of any portion of the
+-Library, but is designed to work with the Library by being compiled or
+-linked with it, is called a "work that uses the Library". Such a
+-work, in isolation, is not a derivative work of the Library, and
+-therefore falls outside the scope of this License.
+-
+- However, linking a "work that uses the Library" with the Library
+-creates an executable that is a derivative of the Library (because it
+-contains portions of the Library), rather than a "work that uses the
+-library". The executable is therefore covered by this License.
+-Section 6 states terms for distribution of such executables.
+-
+- When a "work that uses the Library" uses material from a header file
+-that is part of the Library, the object code for the work may be a
+-derivative work of the Library even though the source code is not.
+-Whether this is true is especially significant if the work can be
+-linked without the Library, or if the work is itself a library. The
+-threshold for this to be true is not precisely defined by law.
+-
+- If such an object file uses only numerical parameters, data
+-structure layouts and accessors, and small macros and small inline
+-functions (ten lines or less in length), then the use of the object
+-file is unrestricted, regardless of whether it is legally a derivative
+-work. (Executables containing this object code plus portions of the
+-Library will still fall under Section 6.)
+-
+- Otherwise, if the work is a derivative of the Library, you may
+-distribute the object code for the work under the terms of Section 6.
+-Any executables containing that work also fall under Section 6,
+-whether or not they are linked directly with the Library itself.
+-
+- 6. As an exception to the Sections above, you may also combine or
+-link a "work that uses the Library" with the Library to produce a
+-work containing portions of the Library, and distribute that work
+-under terms of your choice, provided that the terms permit
+-modification of the work for the customer's own use and reverse
+-engineering for debugging such modifications.
+-
+- You must give prominent notice with each copy of the work that the
+-Library is used in it and that the Library and its use are covered by
+-this License. You must supply a copy of this License. If the work
+-during execution displays copyright notices, you must include the
+-copyright notice for the Library among them, as well as a reference
+-directing the user to the copy of this License. Also, you must do one
+-of these things:
+-
+- a) Accompany the work with the complete corresponding
+- machine-readable source code for the Library including whatever
+- changes were used in the work (which must be distributed under
+- Sections 1 and 2 above); and, if the work is an executable linked
+- with the Library, with the complete machine-readable "work that
+- uses the Library", as object code and/or source code, so that the
+- user can modify the Library and then relink to produce a modified
+- executable containing the modified Library. (It is understood
+- that the user who changes the contents of definitions files in the
+- Library will not necessarily be able to recompile the application
+- to use the modified definitions.)
+-
+- b) Use a suitable shared library mechanism for linking with the
+- Library. A suitable mechanism is one that (1) uses at run time a
+- copy of the library already present on the user's computer system,
+- rather than copying library functions into the executable, and (2)
+- will operate properly with a modified version of the library, if
+- the user installs one, as long as the modified version is
+- interface-compatible with the version that the work was made with.
+-
+- c) Accompany the work with a written offer, valid for at
+- least three years, to give the same user the materials
+- specified in Subsection 6a, above, for a charge no more
+- than the cost of performing this distribution.
+-
+- d) If distribution of the work is made by offering access to copy
+- from a designated place, offer equivalent access to copy the above
+- specified materials from the same place.
+-
+- e) Verify that the user has already received a copy of these
+- materials or that you have already sent this user a copy.
+-
+- For an executable, the required form of the "work that uses the
+-Library" must include any data and utility programs needed for
+-reproducing the executable from it. However, as a special exception,
+-the materials to be distributed need not include anything that is
+-normally distributed (in either source or binary form) with the major
+-components (compiler, kernel, and so on) of the operating system on
+-which the executable runs, unless that component itself accompanies
+-the executable.
+-
+- It may happen that this requirement contradicts the license
+-restrictions of other proprietary libraries that do not normally
+-accompany the operating system. Such a contradiction means you cannot
+-use both them and the Library together in an executable that you
+-distribute.
+-
+- 7. 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 not covered by this License, and distribute such a combined
+-library, provided that the separate distribution of the work based on
+-the Library and of the other library facilities is otherwise
+-permitted, and provided that you do these two things:
+-
+- a) Accompany the combined library with a copy of the same work
+- based on the Library, uncombined with any other library
+- facilities. This must be distributed under the terms of the
+- Sections above.
+-
+- b) Give prominent notice with the combined library of the fact
+- that part of it is a work based on the Library, and explaining
+- where to find the accompanying uncombined form of the same work.
+-
+- 8. You may not copy, modify, sublicense, link with, or distribute
+-the Library except as expressly provided under this License. Any
+-attempt otherwise to copy, modify, sublicense, link with, or
+-distribute the Library is void, and will automatically terminate your
+-rights under this License. However, parties who have received copies,
+-or rights, from you under this License will not have their licenses
+-terminated so long as such parties remain in full compliance.
+-
+- 9. You are not required to accept this License, since you have not
+-signed it. However, nothing else grants you permission to modify or
+-distribute the Library or its derivative works. These actions are
+-prohibited by law if you do not accept this License. Therefore, by
+-modifying or distributing the Library (or any work based on the
+-Library), you indicate your acceptance of this License to do so, and
+-all its terms and conditions for copying, distributing or modifying
+-the Library or works based on it.
+-
+- 10. Each time you redistribute the Library (or any work based on the
+-Library), the recipient automatically receives a license from the
+-original licensor to copy, distribute, link with or modify the Library
+-subject to these terms and conditions. You may not impose any further
+-restrictions on the recipients' exercise of the rights granted herein.
+-You are not responsible for enforcing compliance by third parties with
+-this License.
+-
+- 11. If, as a consequence of a court judgment or allegation of patent
+-infringement or for any other reason (not limited to patent issues),
+-conditions are imposed on you (whether by court order, agreement or
+-otherwise) that contradict the conditions of this License, they do not
+-excuse you from the conditions of this License. If you cannot
+-distribute so as to satisfy simultaneously your obligations under this
+-License and any other pertinent obligations, then as a consequence you
+-may not distribute the Library at all. For example, if a patent
+-license would not permit royalty-free redistribution of the Library by
+-all those who receive copies directly or indirectly through you, then
+-the only way you could satisfy both it and this License would be to
+-refrain entirely from distribution of the Library.
+-
+-If any portion of this section is held invalid or unenforceable under any
+-particular circumstance, the balance of the section is intended to apply,
+-and the section as a whole is intended to apply in other circumstances.
+-
+-It is not the purpose of this section to induce you to infringe any
+-patents or other property right claims or to contest validity of any
+-such claims; this section has the sole purpose of protecting the
+-integrity of the free software distribution system which is
+-implemented by public license practices. Many people have made
+-generous contributions to the wide range of software distributed
+-through that system in reliance on consistent application of that
+-system; it is up to the author/donor to decide if he or she is willing
+-to distribute software through any other system and a licensee cannot
+-impose that choice.
+-
+-This section is intended to make thoroughly clear what is believed to
+-be a consequence of the rest of this License.
+-
+- 12. If the distribution and/or use of the Library is restricted in
+-certain countries either by patents or by copyrighted interfaces, the
+-original copyright holder who places the Library under this License may add
+-an explicit geographical distribution limitation excluding those countries,
+-so that distribution is permitted only in or among countries not thus
+-excluded. In such case, this License incorporates the limitation as if
+-written in the body of this License.
+-
+- 13. The Free Software Foundation may publish revised and/or new
+-versions of the 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
+-specifies a version number of this License which applies to it and
+-"any later version", you have the option of following the terms and
+-conditions either of that version or of any later version published by
+-the Free Software Foundation. If the Library does not specify a
+-license version number, you may choose any version ever published by
+-the Free Software Foundation.
+-
+- 14. If you wish to incorporate parts of the Library into other free
+-programs whose distribution conditions are incompatible with these,
+-write to the author to ask for permission. For software which is
+-copyrighted by the Free Software Foundation, write to the Free
+-Software Foundation; we sometimes make exceptions for this. Our
+-decision will be guided by the two goals of preserving the free status
+-of all derivatives of our free software and of promoting the sharing
+-and reuse of software generally.
+-
+- NO WARRANTY
+-
+- 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+-WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+-EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+-OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+-KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+-PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+-LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+-THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+-
+- 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+-WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+-AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+-FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+-CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+-LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+-RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+-FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), 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 Libraries
+-
+- If you develop a new library, and you want it to be of the greatest
+-possible use to the public, we recommend making it free software that
+-everyone can redistribute and change. You can do so by permitting
+-redistribution under these terms (or, alternatively, under the terms of the
+-ordinary General Public License).
+-
+- To apply these terms, attach the following notices to the library. 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 library's name and a brief idea of what it does.>
+- Copyright (C) <year> <name of author>
+-
+- 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 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
+- Lesser General Public License for more details.
+-
+- You should have received a copy of the GNU Lesser General Public
+- License along with this library; 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.
+-
+-You should also get your employer (if you work as a programmer) or your
+-school, if any, to sign a "copyright disclaimer" for the library, if
+-necessary. Here is a sample; alter the names:
+-
+- Yoyodyne, Inc., hereby disclaims all copyright interest in the
+- library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+-
+- <signature of Ty Coon>, 1 April 1990
+- Ty Coon, President of Vice
+-
+-That's all there is to it!
+diff --git a/COPYING.README b/COPYING.README
+index de5b63215..11af93ca7 100644
+--- a/COPYING.README
++++ b/COPYING.README
+@@ -2,17 +2,5 @@ Eigen is primarily MPL2 licensed. See COPYING.MPL2 and these links:
+ http://www.mozilla.org/MPL/2.0/
+ http://www.mozilla.org/MPL/2.0/FAQ.html
+
+-Some files contain third-party code under BSD or LGPL licenses, whence the other
+-COPYING.* files here.
+-
+-All the LGPL code is either LGPL 2.1-only, or LGPL 2.1-or-later.
+-For this reason, the COPYING.LGPL file contains the LGPL 2.1 text.
+-
+-If you want to guarantee that the Eigen code that you are #including is licensed
+-under the MPL2 and possibly more permissive licenses (like BSD), #define this
+-preprocessor symbol:
+- EIGEN_MPL2_ONLY
+-For example, with most compilers, you could add this to your project CXXFLAGS:
+- -DEIGEN_MPL2_ONLY
+-This will cause a compilation error to be generated if you #include any code that is
+-LGPL licensed.
++Some files contain third-party code under BSD or other MPL2-compatible licenses,
++whence the other COPYING.* files here.
+\ No newline at end of file
+diff --git a/Eigen/src/Core/util/NonMPL2.h b/Eigen/src/Core/util/NonMPL2.h
+deleted file mode 100644
+index 1af67cf18..000000000
+--- a/Eigen/src/Core/util/NonMPL2.h
++++ /dev/null
+@@ -1,3 +0,0 @@
+-#ifdef EIGEN_MPL2_ONLY
+-#error Including non-MPL2 code in EIGEN_MPL2_ONLY mode
+-#endif
+diff --git a/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h b/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
+index 7803fd817..1a5d7faeb 100644
+--- a/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
++++ b/Eigen/src/IterativeLinearSolvers/IncompleteCholesky.h
+@@ -24,8 +24,7 @@ namespace Eigen {
+ * \tparam Scalar the scalar type of the input matrices
+ * \tparam _UpLo The triangular part that will be used for the computations. It can be Lower
+ * or Upper. Default is Lower.
+- * \tparam _OrderingType The ordering method to use, either AMDOrdering<> or NaturalOrdering<>. Default is AMDOrdering<int>,
+- * unless EIGEN_MPL2_ONLY is defined, in which case the default is NaturalOrdering<int>.
++ * \tparam _OrderingType The ordering method to use, either AMDOrdering<> or NaturalOrdering<>. Default is AMDOrdering<int>.
+ *
+ * \implsparsesolverconcept
+ *
+diff --git a/bench/tensors/eigen_sycl_bench.sh b/bench/tensors/eigen_sycl_bench.sh
+index 3f67b3d86..4cb8f7be4 100755
+--- a/bench/tensors/eigen_sycl_bench.sh
++++ b/bench/tensors/eigen_sycl_bench.sh
+@@ -10,7 +10,6 @@ benchmark_main.cc \
+ -march=native \
+ -O3 \
+ -DNDEBUG \
+--DEIGEN_MPL2_ONLY \
+ -DEIGEN_USE_SYCL=1 \
+ -DEIGEN_SYCL_LOCAL_MEM=1 \
+ -no-serial-memop \
+diff --git a/bench/tensors/eigen_sycl_bench_contract.sh b/bench/tensors/eigen_sycl_bench_contract.sh
+index 73fd6c4a0..3ab0138a1 100644
+--- a/bench/tensors/eigen_sycl_bench_contract.sh
++++ b/bench/tensors/eigen_sycl_bench_contract.sh
+@@ -1,7 +1,7 @@
+ rm -f tensor_contract_sycl_bench
+ : "${COMPUTECPP_PACKAGE_ROOT_DIR:?Need to set COMPUTECPP_PACKAGE_ROOT_DIR}"
+ echo "COMPUTECPP_PACKAGE_ROOT_DIR is set to: "$COMPUTECPP_PACKAGE_ROOT_DIR
+-${COMPUTECPP_PACKAGE_ROOT_DIR}/bin/compute++ tensor_contract_sycl_bench.cc -I ../../ -I ${COMPUTECPP_PACKAGE_ROOT_DIR}/include/ -std=c++11 -O3 -DNDEBUG -DEIGEN_MPL2_ONLY -DEIGEN_USE_SYCL=1 -no-serial-memop -mllvm -inline-threshold=10000 -fsycl-ih-last -sycl-driver -Xclang -cl-mad-enable -lOpenCL -lComputeCpp -lpthread -o tensor_contract_sycl_bench ${@:1}
++${COMPUTECPP_PACKAGE_ROOT_DIR}/bin/compute++ tensor_contract_sycl_bench.cc -I ../../ -I ${COMPUTECPP_PACKAGE_ROOT_DIR}/include/ -std=c++11 -O3 -DNDEBUG -DEIGEN_USE_SYCL=1 -no-serial-memop -mllvm -inline-threshold=10000 -fsycl-ih-last -sycl-driver -Xclang -cl-mad-enable -lOpenCL -lComputeCpp -lpthread -o tensor_contract_sycl_bench ${@:1}
+ export LD_LIBRARY_PATH=${COMPUTECPP_PACKAGE_ROOT_DIR}/lib:$LD_LIBRARY_PATH
+ ./tensor_contract_sycl_bench
+
+diff --git a/doc/PreprocessorDirectives.dox b/doc/PreprocessorDirectives.dox
+index 0f545b086..b7d59ccbc 100644
+--- a/doc/PreprocessorDirectives.dox
++++ b/doc/PreprocessorDirectives.dox
+@@ -92,9 +92,6 @@ run time. However, these assertions do cost time and can thus be turned off.
+ - \b eigen_assert - macro with one argument that is used inside %Eigen for assertions. By default, it is
+ basically defined to be \c assert, which aborts the program if the assertion is violated. Redefine this
+ macro if you want to do something else, like throwing an exception.
+- - \b EIGEN_MPL2_ONLY - disable non MPL2 compatible features, or in other words disable the features which
+- are still under the LGPL.
+-
+
+ \section TopicPreprocessorDirectivesPerformance Alignment, vectorization and performance tweaking
+
+diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
+index 5136f82aa..9f557743a 100644
+--- a/test/CMakeLists.txt
++++ b/test/CMakeLists.txt
+@@ -277,7 +277,6 @@ ei_add_test(special_numbers)
+ ei_add_test(rvalue_types)
+ ei_add_test(dense_storage)
+ ei_add_test(ctorleak)
+-ei_add_test(mpl2only)
+ ei_add_test(inplace_decomposition)
+ ei_add_test(half_float)
+ ei_add_test(bfloat16_float)
+diff --git a/test/mpl2only.cpp b/test/mpl2only.cpp
+deleted file mode 100644
+index 296350d08..000000000
+--- a/test/mpl2only.cpp
++++ /dev/null
+@@ -1,24 +0,0 @@
+-// This file is part of Eigen, a lightweight C++ template library
+-// for linear algebra.
+-//
+-// Copyright (C) 2015 Gael Guennebaud <gael.guennebaud@inria.fr>
+-//
+-// This Source Code Form is subject to the terms of the Mozilla
+-// Public License v. 2.0. If a copy of the MPL was not distributed
+-// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+-
+-#ifndef EIGEN_MPL2_ONLY
+-#define EIGEN_MPL2_ONLY
+-#endif
+-#include <Eigen/Dense>
+-#include <Eigen/SparseCore>
+-#include <Eigen/SparseLU>
+-#include <Eigen/SparseQR>
+-#include <Eigen/Sparse>
+-#include <Eigen/IterativeLinearSolvers>
+-#include <Eigen/Eigen>
+-
+-int main()
+-{
+- return 0;
+-}
+diff --git a/unsupported/Eigen/IterativeSolvers b/unsupported/Eigen/IterativeSolvers
+index a3f58d676..f045fb607 100644
+--- a/unsupported/Eigen/IterativeSolvers
++++ b/unsupported/Eigen/IterativeSolvers
+@@ -19,7 +19,6 @@
+ * \defgroup IterativeLinearSolvers_Module Iterative solvers module
+ * This module aims to provide various iterative linear and non linear solver algorithms.
+ * It currently provides:
+- * - a constrained conjugate gradient
+ * - a Householder GMRES implementation
+ * - an IDR(s) implementation
+ * - a DGMRES implementation
+@@ -33,11 +32,6 @@
+
+ #include "../../Eigen/src/Core/util/DisableStupidWarnings.h"
+
+-#ifndef EIGEN_MPL2_ONLY
+-#include "src/IterativeSolvers/IterationController.h"
+-#include "src/IterativeSolvers/ConstrainedConjGrad.h"
+-#endif
+-
+ #include "src/IterativeSolvers/IncompleteLU.h"
+ #include "src/IterativeSolvers/GMRES.h"
+ #include "src/IterativeSolvers/DGMRES.h"
+diff --git a/unsupported/Eigen/src/IterativeSolvers/ConstrainedConjGrad.h b/unsupported/Eigen/src/IterativeSolvers/ConstrainedConjGrad.h
+deleted file mode 100644
+index e7d70f39d..000000000
+--- a/unsupported/Eigen/src/IterativeSolvers/ConstrainedConjGrad.h
++++ /dev/null
+@@ -1,187 +0,0 @@
+-// This file is part of Eigen, a lightweight C++ template library
+-// for linear algebra.
+-//
+-// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
+-
+-/* NOTE The functions of this file have been adapted from the GMM++ library */
+-
+-//========================================================================
+-//
+-// Copyright (C) 2002-2007 Yves Renard
+-//
+-// This file is a part of GETFEM++
+-//
+-// Getfem++ 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; version 2.1 of the License.
+-//
+-// 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.
+-// You should have received a copy of the GNU Lesser General Public
+-// License along with this program; if not, write to the Free Software
+-// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
+-// USA.
+-//
+-//========================================================================
+-
+-#include "../../../../Eigen/src/Core/util/NonMPL2.h"
+-
+-#ifndef EIGEN_CONSTRAINEDCG_H
+-#define EIGEN_CONSTRAINEDCG_H
+-
+-#include "../../../../Eigen/Core"
+-
+-namespace Eigen {
+-
+-namespace internal {
+-
+-/** \ingroup IterativeLinearSolvers_Module
+- * Compute the pseudo inverse of the non-square matrix C such that
+- * \f$ CINV = (C * C^T)^{-1} * C \f$ based on a conjugate gradient method.
+- *
+- * This function is internally used by constrained_cg.
+- */
+-template <typename CMatrix, typename CINVMatrix>
+-void pseudo_inverse(const CMatrix &C, CINVMatrix &CINV)
+-{
+- // optimisable : copie de la ligne, precalcul de C * trans(C).
+- typedef typename CMatrix::Scalar Scalar;
+- typedef typename CMatrix::Index Index;
+- // FIXME use sparse vectors ?
+- typedef Matrix<Scalar,Dynamic,1> TmpVec;
+-
+- Index rows = C.rows(), cols = C.cols();
+-
+- TmpVec d(rows), e(rows), l(cols), p(rows), q(rows), r(rows);
+- Scalar rho, rho_1, alpha;
+- d.setZero();
+-
+- typedef Triplet<double> T;
+- std::vector<T> tripletList;
+-
+- for (Index i = 0; i < rows; ++i)
+- {
+- d[i] = 1.0;
+- rho = 1.0;
+- e.setZero();
+- r = d;
+- p = d;
+-
+- while (rho >= 1e-38)
+- { /* conjugate gradient to compute e */
+- /* which is the i-th row of inv(C * trans(C)) */
+- l = C.transpose() * p;
+- q = C * l;
+- alpha = rho / p.dot(q);
+- e += alpha * p;
+- r += -alpha * q;
+- rho_1 = rho;
+- rho = r.dot(r);
+- p = (rho/rho_1) * p + r;
+- }
+-
+- l = C.transpose() * e; // l is the i-th row of CINV
+- // FIXME add a generic "prune/filter" expression for both dense and sparse object to sparse
+- for (Index j=0; j<l.size(); ++j)
+- if (l[j]<1e-15)
+- tripletList.push_back(T(i,j,l(j)));
+-
+-
+- d[i] = 0.0;
+- }
+- CINV.setFromTriplets(tripletList.begin(), tripletList.end());
+-}
+-
+-
+-
+-/** \ingroup IterativeLinearSolvers_Module
+- * Constrained conjugate gradient
+- *
+- * Computes the minimum of \f$ 1/2((Ax).x) - bx \f$ under the constraint \f$ Cx \le f \f$
+- */
+-template<typename TMatrix, typename CMatrix,
+- typename VectorX, typename VectorB, typename VectorF>
+-void constrained_cg(const TMatrix& A, const CMatrix& C, VectorX& x,
+- const VectorB& b, const VectorF& f, IterationController &iter)
+-{
+- using std::sqrt;
+- typedef typename TMatrix::Scalar Scalar;
+- typedef typename TMatrix::Index Index;
+- typedef Matrix<Scalar,Dynamic,1> TmpVec;
+-
+- Scalar rho = 1.0, rho_1, lambda, gamma;
+- Index xSize = x.size();
+- TmpVec p(xSize), q(xSize), q2(xSize),
+- r(xSize), old_z(xSize), z(xSize),
+- memox(xSize);
+- std::vector<bool> satured(C.rows());
+- p.setZero();
+- iter.setRhsNorm(sqrt(b.dot(b))); // gael vect_sp(PS, b, b)
+- if (iter.rhsNorm() == 0.0) iter.setRhsNorm(1.0);
+-
+- SparseMatrix<Scalar,RowMajor> CINV(C.rows(), C.cols());
+- pseudo_inverse(C, CINV);
+-
+- while(true)
+- {
+- // computation of residual
+- old_z = z;
+- memox = x;
+- r = b;
+- r += A * -x;
+- z = r;
+- bool transition = false;
+- for (Index i = 0; i < C.rows(); ++i)
+- {
+- Scalar al = C.row(i).dot(x) - f.coeff(i);
+- if (al >= -1.0E-15)
+- {
+- if (!satured[i])
+- {
+- satured[i] = true;
+- transition = true;
+- }
+- Scalar bb = CINV.row(i).dot(z);
+- if (bb > 0.0)
+- // FIXME: we should allow that: z += -bb * C.row(i);
+- for (typename CMatrix::InnerIterator it(C,i); it; ++it)
+- z.coeffRef(it.index()) -= bb*it.value();
+- }
+- else
+- satured[i] = false;
+- }
+-
+- // descent direction
+- rho_1 = rho;
+- rho = r.dot(z);
+-
+- if (iter.finished(rho)) break;
+- if (transition || iter.first()) gamma = 0.0;
+- else gamma = (std::max)(0.0, (rho - old_z.dot(z)) / rho_1);
+- p = z + gamma*p;
+-
+- ++iter;
+- // one dimensionnal optimization
+- q = A * p;
+- lambda = rho / q.dot(p);
+- for (Index i = 0; i < C.rows(); ++i)
+- {
+- if (!satured[i])
+- {
+- Scalar bb = C.row(i).dot(p) - f[i];
+- if (bb > 0.0)
+- lambda = (std::min)(lambda, (f.coeff(i)-C.row(i).dot(x)) / bb);
+- }
+- }
+- x += lambda * p;
+- memox -= x;
+- }
+-}
+-
+-} // end namespace internal
+-
+-} // end namespace Eigen
+-
+-#endif // EIGEN_CONSTRAINEDCG_H
+diff --git a/unsupported/Eigen/src/IterativeSolvers/IterationController.h b/unsupported/Eigen/src/IterativeSolvers/IterationController.h
+deleted file mode 100644
+index a116e09e2..000000000
+--- a/unsupported/Eigen/src/IterativeSolvers/IterationController.h
++++ /dev/null
+@@ -1,154 +0,0 @@
+-// This file is part of Eigen, a lightweight C++ template library
+-// for linear algebra.
+-//
+-// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
+-
+-/* NOTE The class IterationController has been adapted from the iteration
+- * class of the GMM++ and ITL libraries.
+- */
+-
+-//=======================================================================
+-// Copyright (C) 1997-2001
+-// Authors: Andrew Lumsdaine <lums@osl.iu.edu>
+-// Lie-Quan Lee <llee@osl.iu.edu>
+-//
+-// This file is part of the Iterative Template Library
+-//
+-// You should have received a copy of the License Agreement for the
+-// Iterative Template Library along with the software; see the
+-// file LICENSE.
+-//
+-// Permission to modify the code and to distribute modified code is
+-// granted, provided the text of this NOTICE is retained, a notice that
+-// the code was modified is included with the above COPYRIGHT NOTICE and
+-// with the COPYRIGHT NOTICE in the LICENSE file, and that the LICENSE
+-// file is distributed with the modified code.
+-//
+-// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
+-// By way of example, but not limitation, Licensor MAKES NO
+-// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
+-// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
+-// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
+-// OR OTHER RIGHTS.
+-//=======================================================================
+-
+-//========================================================================
+-//
+-// Copyright (C) 2002-2007 Yves Renard
+-//
+-// This file is a part of GETFEM++
+-//
+-// Getfem++ 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; version 2.1 of the License.
+-//
+-// 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.
+-// You should have received a copy of the GNU Lesser General Public
+-// License along with this program; if not, write to the Free Software
+-// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
+-// USA.
+-//
+-//========================================================================
+-
+-#include "../../../../Eigen/src/Core/util/NonMPL2.h"
+-
+-#ifndef EIGEN_ITERATION_CONTROLLER_H
+-#define EIGEN_ITERATION_CONTROLLER_H
+-
+-namespace Eigen {
+-
+-/** \ingroup IterativeLinearSolvers_Module
+- * \class IterationController
+- *
+- * \brief Controls the iterations of the iterative solvers
+- *
+- * This class has been adapted from the iteration class of GMM++ and ITL libraries.
+- *
+- */
+-class IterationController
+-{
+- protected :
+- double m_rhsn; ///< Right hand side norm
+- size_t m_maxiter; ///< Max. number of iterations
+- int m_noise; ///< if noise > 0 iterations are printed
+- double m_resmax; ///< maximum residual
+- double m_resminreach, m_resadd;
+- size_t m_nit; ///< iteration number
+- double m_res; ///< last computed residual
+- bool m_written;
+- void (*m_callback)(const IterationController&);
+- public :
+-
+- void init()
+- {
+- m_nit = 0; m_res = 0.0; m_written = false;
+- m_resminreach = 1E50; m_resadd = 0.0;
+- m_callback = 0;
+- }
+-
+- IterationController(double r = 1.0E-8, int noi = 0, size_t mit = size_t(-1))
+- : m_rhsn(1.0), m_maxiter(mit), m_noise(noi), m_resmax(r) { init(); }
+-
+- void operator ++(int) { m_nit++; m_written = false; m_resadd += m_res; }
+- void operator ++() { (*this)++; }
+-
+- bool first() { return m_nit == 0; }
+-
+- /* get/set the "noisyness" (verbosity) of the solvers */
+- int noiseLevel() const { return m_noise; }
+- void setNoiseLevel(int n) { m_noise = n; }
+- void reduceNoiseLevel() { if (m_noise > 0) m_noise--; }
+-
+- double maxResidual() const { return m_resmax; }
+- void setMaxResidual(double r) { m_resmax = r; }
+-
+- double residual() const { return m_res; }
+-
+- /* change the user-definable callback, called after each iteration */
+- void setCallback(void (*t)(const IterationController&))
+- {
+- m_callback = t;
+- }
+-
+- size_t iteration() const { return m_nit; }
+- void setIteration(size_t i) { m_nit = i; }
+-
+- size_t maxIterarions() const { return m_maxiter; }
+- void setMaxIterations(size_t i) { m_maxiter = i; }
+-
+- double rhsNorm() const { return m_rhsn; }
+- void setRhsNorm(double r) { m_rhsn = r; }
+-
+- bool converged() const { return m_res <= m_rhsn * m_resmax; }
+- bool converged(double nr)
+- {
+- using std::abs;
+- m_res = abs(nr);
+- m_resminreach = (std::min)(m_resminreach, m_res);
+- return converged();
+- }
+- template<typename VectorType> bool converged(const VectorType &v)
+- { return converged(v.squaredNorm()); }
+-
+- bool finished(double nr)
+- {
+- if (m_callback) m_callback(*this);
+- if (m_noise > 0 && !m_written)
+- {
+- converged(nr);
+- m_written = true;
+- }
+- return (m_nit >= m_maxiter || converged(nr));
+- }
+- template <typename VectorType>
+- bool finished(const MatrixBase<VectorType> &v)
+- { return finished(double(v.squaredNorm())); }
+-
+-};
+-
+-} // end namespace Eigen
+-
+-#endif // EIGEN_ITERATION_CONTROLLER_H
@@ -1,15 +1,20 @@
DESCRIPTION = "Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms."
HOMEPAGE = "http://eigen.tuxfamily.org/"
-LICENSE = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & GPL-2.0-only & LGPL-2.1-only & MINPACK"
+LICENSE = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & GPL-2.0-only & Minpack"
+# The GPL code is only used for benchmark tests and does not affect what is installed.
+LICENSE:${PN} = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & Minpack"
+LICENSE:${PN}-dbg = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & Minpack"
+LICENSE:${PN}-dev = "MPL-2.0 & Apache-2.0 & BSD-3-Clause & Minpack"
LIC_FILES_CHKSUM = "file://COPYING.MPL2;md5=815ca599c9df247a0c7f619bab123dad \
+ file://COPYING.APACHE;md5=8de23b8e93c63005353056b2475e9aa5 \
file://COPYING.BSD;md5=2dd0510ee95e59ca28834b875bc96596 \
file://COPYING.GPL;md5=d32239bcb673463ab874e80d47fae504 \
- file://COPYING.LGPL;md5=4fbd65380cdd255951079008b364516c \
file://COPYING.MINPACK;md5=71d91b0f75ce79a75d3108a72bef8116 \
"
SRC_URI = "git://gitlab.com/libeigen/eigen.git;protocol=http;branch=3.4 \
file://0001-Default-eigen_packet_wrapper-constructor.patch \
+ file://0002-Remove-LGPL-Code-and-references.patch \
"
SRCREV = "3147391d946bb4b6c68edd901f2add6ac1f31f8c"
Since libeigen is a header-only library, LGPL effectively has the same properties as GPL when it comes to affecting the licensing of the code that uses libeigen. To avoid the problem, backport a patch to remove all LGPL-2.1 code from the library. Switch to using "Minpack" rather than "MINPACK" as license since the former is the official SPDX name. Also correct the licenses for ${PN}, ${PN}-dbg and ${PN}-dev to reflect that they do not contain any GPL code (the GPL code is only used for benchmark tests and does not affect what is installed). License-Update: Correct the license information Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> --- ...0002-Remove-LGPL-Code-and-references.patch | 1040 +++++++++++++++++ .../libeigen/libeigen_3.4.0.bb | 9 +- 2 files changed, 1047 insertions(+), 2 deletions(-) create mode 100644 meta-oe/recipes-support/libeigen/libeigen/0002-Remove-LGPL-Code-and-references.patch