ENH: Update vendored Eigen3 fork tag (closes #6239 durably, supersedes #6247)

Modules/ThirdParty/Eigen3/UpdateFromUpstream.sh

@@ -13,7 +13,7 @@ readonly ownership="Eigen Upstream <kwrobot@kitware.com>"
 exact_tree_match=false
 readonly subtree="Modules/ThirdParty/Eigen3/src/itkeigen"
 readonly repo="https://github.com/InsightSoftwareConsortium/eigen"
-readonly tag="for/itk-20260501-879885e1"
+readonly tag="for/itk-20260509-599d71ab-p2-prose"
 readonly paths="
 Eigen/AccelerateSupport
 Eigen/Cholesky

Modules/ThirdParty/Eigen3/src/itkeigen/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: The Eigen Authors
+# SPDX-License-Identifier: MPL-2.0
+
 # Same version of ITK cmake_minimum_required
 cmake_minimum_required(VERSION 3.16.3)
 
@@ -965,6 +968,10 @@ target_include_directories (eigen_internal SYSTEM INTERFACE
 
 # Export as title case Eigen
 set_target_properties (eigen_internal PROPERTIES EXPORT_NAME Eigen)
+# Issue InsightSoftwareConsortium/ITK#6239: ship eigen_internal in ITKTargets.cmake when building inside ITK.
+if(DEFINED ITK3P_INSTALL_EXPORT_NAME)
+  install (TARGETS eigen_internal EXPORT ${ITK3P_INSTALL_EXPORT_NAME})
+endif()
 install (TARGETS eigen_internal EXPORT ITKInternalEigen3Targets)
 
 set(EIGEN3_TARGETS_FILE ITKInternalEigen3Targets.cmake)

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/AccelerateSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_ACCELERATESUPPORT_MODULE_H
 #define EIGEN_ACCELERATESUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Cholesky

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_CHOLESKY_MODULE_H
 #define EIGEN_CHOLESKY_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/CholmodSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_CHOLMODSUPPORT_MODULE_H
 #define EIGEN_CHOLMODSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Core

@@ -7,6 +7,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_CORE_MODULE_H
 #define EIGEN_CORE_MODULE_H
@@ -49,7 +50,6 @@
 #include "src/Core/util/MKL_support.h"
 #include "src/Core/util/AOCL_Support.h"
 
-
 // EIGEN_HAS_GPU_FP16 is now always true when compiling with CUDA or HIP.
 // Use EIGEN_GPUCC (compile-time) or EIGEN_GPU_COMPILE_PHASE (device phase) instead.
 // TODO: Remove EIGEN_HAS_GPU_BF16 similarly once HIP bf16 guards are cleaned up.
@@ -152,8 +152,8 @@
 
 namespace Eigen {
 
-using std::size_t;
 using std::ptrdiff_t;
+using std::size_t;
 
 }  // namespace Eigen
 
@@ -275,9 +275,10 @@ using std::ptrdiff_t;
 #include "src/Core/arch/SVE/TypeCasting.h"
 #include "src/Core/arch/SVE/MathFunctions.h"
 #elif defined EIGEN_VECTORIZE_RVV10
+#include "src/Core/arch/RVV10/PacketMathDecl.h"
 #include "src/Core/arch/RVV10/PacketMath.h"
-#include "src/Core/arch/RVV10/PacketMath4.h"
 #include "src/Core/arch/RVV10/PacketMath2.h"
+#include "src/Core/arch/RVV10/PacketMath4.h"
 #include "src/Core/arch/RVV10/TypeCasting.h"
 #include "src/Core/arch/RVV10/MathFunctions.h"
 #if defined EIGEN_VECTORIZE_RVV10FP16
@@ -286,6 +287,10 @@ using std::ptrdiff_t;
 #if defined EIGEN_VECTORIZE_RVV10BF16
 #include "src/Core/arch/RVV10/PacketMathBF16.h"
 #endif
+#if EIGEN_RISCV64_DEFAULT_LMUL == 1
+#include "src/Core/arch/RVV10/Complex.h"
+#include "src/Core/arch/RVV10/Complex2.h"
+#endif
 #elif defined EIGEN_VECTORIZE_ZVECTOR
 #include "src/Core/arch/ZVector/PacketMath.h"
 #include "src/Core/arch/ZVector/MathFunctions.h"

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Dense

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_DENSE_MODULE_H
 #define EIGEN_DENSE_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Eigen

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_EIGEN_MODULE_H
 #define EIGEN_EIGEN_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Eigenvalues

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_EIGENVALUES_MODULE_H
 #define EIGEN_EIGENVALUES_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Geometry

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_GEOMETRY_MODULE_H
 #define EIGEN_GEOMETRY_MODULE_H
@@ -23,7 +25,8 @@
  *  - \link Quaternion quaternions \endlink
  *  - cross products (\ref MatrixBase::cross(), \ref MatrixBase::cross3())
  *  - orthogonal vector generation (MatrixBase::unitOrthogonal)
- *  - some linear components: \link ParametrizedLine parametrized-lines \endlink and \link Hyperplane hyperplanes \endlink
+ *  - some linear components: \link ParametrizedLine parametrized-lines \endlink and \link Hyperplane hyperplanes
+ * \endlink
  *  - \link AlignedBox axis aligned bounding boxes \endlink
  *  - \link umeyama() least-square transformation fitting \endlink
  * \code

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Householder

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_HOUSEHOLDER_MODULE_H
 #define EIGEN_HOUSEHOLDER_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/IterativeLinearSolvers

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_ITERATIVELINEARSOLVERS_MODULE_H
 #define EIGEN_ITERATIVELINEARSOLVERS_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Jacobi

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_JACOBI_MODULE_H
 #define EIGEN_JACOBI_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/KLUSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_KLUSUPPORT_MODULE_H
 #define EIGEN_KLUSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/LU

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_LU_MODULE_H
 #define EIGEN_LU_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/MetisSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_METISSUPPORT_MODULE_H
 #define EIGEN_METISSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/OrderingMethods

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_ORDERINGMETHODS_MODULE_H
 #define EIGEN_ORDERINGMETHODS_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/PaStiXSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_PASTIXSUPPORT_MODULE_H
 #define EIGEN_PASTIXSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/PardisoSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_PARDISOSUPPORT_MODULE_H
 #define EIGEN_PARDISOSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/QR

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_QR_MODULE_H
 #define EIGEN_QR_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/QtAlignedMalloc

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_QTMALLOC_MODULE_H
 #define EIGEN_QTMALLOC_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SPQRSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPQRSUPPORT_MODULE_H
 #define EIGEN_SPQRSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SVD

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SVD_MODULE_H
 #define EIGEN_SVD_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Sparse

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPARSE_MODULE_H
 #define EIGEN_SPARSE_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SparseCholesky

@@ -6,6 +6,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPARSECHOLESKY_MODULE_H
 #define EIGEN_SPARSECHOLESKY_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SparseCore

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPARSECORE_MODULE_H
 #define EIGEN_SPARSECORE_MODULE_H
@@ -59,6 +61,7 @@
 #include "src/SparseCore/SparsePermutation.h"
 #include "src/SparseCore/SparseFuzzy.h"
 #include "src/SparseCore/SparseSolverBase.h"
+#include "src/SparseCore/SparsityPatternRef.h"
 // IWYU pragma: end_exports
 
 #include "src/Core/util/ReenableStupidWarnings.h"

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SparseLU

@@ -7,6 +7,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPARSELU_MODULE_H
 #define EIGEN_SPARSELU_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SparseQR

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SPARSEQR_MODULE_H
 #define EIGEN_SPARSEQR_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/StdDeque

@@ -7,6 +7,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_STDDEQUE_MODULE_H
 #define EIGEN_STDDEQUE_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/StdList

@@ -6,6 +6,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_STDLIST_MODULE_H
 #define EIGEN_STDLIST_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/StdVector

@@ -7,6 +7,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_STDVECTOR_MODULE_H
 #define EIGEN_STDVECTOR_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/SuperLUSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_SUPERLUSUPPORT_MODULE_H
 #define EIGEN_SUPERLUSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/ThreadPool

@@ -6,6 +6,7 @@
 // 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/.
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_THREADPOOL_MODULE_H
 #define EIGEN_THREADPOOL_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/UmfPackSupport

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_UMFPACKSUPPORT_MODULE_H
 #define EIGEN_UMFPACKSUPPORT_MODULE_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/Version

@@ -4,6 +4,8 @@
 // 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/.
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
 
 #ifndef EIGEN_VERSION_H
 #define EIGEN_VERSION_H

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/AccelerateSupport/AccelerateSupport.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
+
 #ifndef EIGEN_ACCELERATESUPPORT_H
 #define EIGEN_ACCELERATESUPPORT_H
 

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/AccelerateSupport/InternalHeaderCheck.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
+
 #ifndef EIGEN_ACCELERATESUPPORT_MODULE_H
 #error "Please include Eigen/AccelerateSupport instead of including headers inside the src directory directly."
 #endif

Modules/ThirdParty/Eigen3/src/itkeigen/Eigen/src/Cholesky/InternalHeaderCheck.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: The Eigen Authors
+// SPDX-License-Identifier: MPL-2.0
+
 #ifndef EIGEN_CHOLESKY_MODULE_H
 #error "Please include Eigen/Cholesky instead of including headers inside the src directory directly."
 #endif