diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/i_eigen.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/i_eigen.md
index dae5722ba942db73637d85cb38da193cd8d8e0dd..cd4db4acfa9b27904bf2e723051fad952ffafe8c 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/i_eigen.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/i_eigen.md
@@ -1,3 +1,3 @@
Configuration for solvers from the Eigen library.
-For details see also the [documentation of the Eigen library](https://eigen.tuxfamily.org/dox/group__Sparse__Reference.html).
+For details see also the [documentation of the Eigen library](https://libeigen.gitlab.io/docs/group__Sparse__Reference.html).
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_angle.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_angle.md
index 816d5ca0a7a52f03190cbb56d3273e6a33d3aea2..58171a5ac37b95f1478a32018f0f50c631eed06d 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_angle.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_angle.md
@@ -5,4 +5,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/>
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_l.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_l.md
index bf1ed857e6a41b4ba6089d919569184737f50d4d..3c8693d282b8271f5ab1b525804fe52c35f2dd08 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_l.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_l.md
@@ -4,4 +4,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/>
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_residual_update.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_residual_update.md
index 25686010beb2fe08bd4b08a7cc0eb1e0e4e57e46..5f75293b3310b76dec65a140642aca27b162128f 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_residual_update.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_residual_update.md
@@ -5,4 +5,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/>
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_restart.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_restart.md
index 76b8eb7c5c853112b8011dd2c5f0e214363758ab..0379ee378c64e0cd2e6bb17051b4a2a9376d2f2a 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_restart.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_restart.md
@@ -5,4 +5,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/classEigen_1_1GMRES.html>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/classEigen_1_1GMRES.html>
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_s.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_s.md
index 132d574f5c8a6e7109fc6d6661f0ccf0c6813fd3..859aa27656198ed9788380b5e5e229d5a537cab7 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_s.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_s.md
@@ -4,4 +4,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/>
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_scaling.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_scaling.md
index fde0cebb933e644e7ff7fb97c040fc655d101ca2..74444c77fb31e891e298c99b1f4656c115b1f4f5 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_scaling.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_scaling.md
@@ -4,6 +4,6 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Note" in <https://eigen.tuxfamily.org/dox/classEigen_1_1SparseLU.html>
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/namespaceEigen.html>
+- "Note" in <https://libeigen.gitlab.io/docs/classEigen_1_1SparseLU.html>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/namespaceEigen.html>
- References : D. Ruiz and B. Ucar, A Symmetry Preserving Algorithm for Matrix Scaling, INRIA Research report RR-7552
diff --git a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_smoothing.md b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_smoothing.md
index 339f112ad50f60237ed6dc1b989bd788a2b534ad..170b1f20d575af0b6c097e6c3d6811e091d27b88 100644
--- a/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_smoothing.md
+++ b/Documentation/ProjectFile/prj/linear_solvers/linear_solver/eigen/t_smoothing.md
@@ -4,4 +4,4 @@ through OGS_USE_EIGEN_UNSUPPORTED CMake option.
See following links for detail description:
-- "Detailed Description" in <https://eigen.tuxfamily.org/dox/unsupported/>
+- "Detailed Description" in <https://libeigen.gitlab.io/docs/unsupported/>
diff --git a/MathLib/LinAlg/Eigen/EigenLinearSolver.cpp b/MathLib/LinAlg/Eigen/EigenLinearSolver.cpp
index 84f6b29f77b9c03a9515cf7c36540a70140aec03..91b79bc088a32a00ceea4274c9f2d86f79db0182 100644
--- a/MathLib/LinAlg/Eigen/EigenLinearSolver.cpp
+++ b/MathLib/LinAlg/Eigen/EigenLinearSolver.cpp
@@ -259,7 +259,7 @@ public:
// matrix must be copied, because Eigen's linear solver stores a
// reference to it cf.
- // https://eigen.tuxfamily.org/dox/classEigen_1_1IterativeSolverBase.html#a7dfa55c55e82d697bde227696a630914
+ // https://libeigen.gitlab.io/docs/classEigen_1_1IterativeSolverBase.html#a7dfa55c55e82d697bde227696a630914
A_ = A;
if (!A_.isCompressed())
@@ -339,7 +339,7 @@ std::unique_ptr<EigenLinearSolverBase> createIterativeSolver(
case EigenOption::PreconType::ILUT:
// TODO for this preconditioner further options can be passed.
// see
- // https://eigen.tuxfamily.org/dox/classEigen_1_1IncompleteLUT.html
+ // https://libeigen.gitlab.io/docs/classEigen_1_1IncompleteLUT.html
return createIterativeSolver<Solver,
Eigen::IncompleteLUT<double>>();
default:
diff --git a/MathLib/ODE/ODESolverTypes.h b/MathLib/ODE/ODESolverTypes.h
index 0d0494db76ad2891303471e34a492e95a68070a4..ee752f8beb91d1e11f17cb9cbacca501852bab54 100644
--- a/MathLib/ODE/ODESolverTypes.h
+++ b/MathLib/ODE/ODESolverTypes.h
@@ -26,7 +26,7 @@ namespace ODE
* \tparam N number of rows
* \tparam M number of columns
*
- * \see https://eigen.tuxfamily.org/dox/classEigen_1_1Map.html
+ * \see https://libeigen.gitlab.io/docs/classEigen_1_1Map.html
*/
template <int N, int M>
using MappedMatrix = Eigen::Map<Eigen::Matrix<double, N, M, Eigen::ColMajor>>;
diff --git a/web/content/docs/devguide/advanced/configuration-options/index.md b/web/content/docs/devguide/advanced/configuration-options/index.md
index b11c0c3821076a953a0c079274e4015818fd92f0..ea7b62cb994f7ccda156d832864eea16ca680c22 100644
--- a/web/content/docs/devguide/advanced/configuration-options/index.md
+++ b/web/content/docs/devguide/advanced/configuration-options/index.md
@@ -46,7 +46,7 @@ CMake switches to enable / disable parts of OGS.
- `OGS_CPU_ARCHITECTURE` - Optimizes for the given CPU architecture see [-march](https://gcc.gnu.org/onlinedocs/gcc-4.5.3/gcc/i386-and-x86_002d64-Options.html)-flag. Defaults to `native`. For redistributable binaries set to `generic` on Linux and `core2` on Mac OS. Can be disabled when set to `OFF`.
- `CMAKE_LIBRARY_SEARCH_PATH` - Additional library installation path, e.g. `/opt/local` or `C:/libs`
- `OGS_DEPENDENCY_VERSIONS` - Overwrite individual entries in `web/data/versions.json`. Should be quoted and `;`-separated, e.g.: `-DOGS_DEPENDENCY_VERSIONS="minimum_version.petsc=3.16.2;ctest.large_runtime=120"`.
-- `OGS_USE_MKL` - Enables MKL support. Requires MKL to be installed on the system.[^MKL] A CMake or environment variable `MKLROOT` or `MKL_DIR` has to point to the MKL installation directory. To enable 64-bit array indices in MKL add `-DMKL_USE_interface=ilp64` on the first CMake run (with a clean CMake cache) but this seems [not supported by Eigen](https://eigen.tuxfamily.org/dox/TopicUsingIntelMKL.html).
+- `OGS_USE_MKL` - Enables MKL support. Requires MKL to be installed on the system.[^MKL] A CMake or environment variable `MKLROOT` or `MKL_DIR` has to point to the MKL installation directory. To enable 64-bit array indices in MKL add `-DMKL_USE_interface=ilp64` on the first CMake run (with a clean CMake cache) but this seems [not supported by Eigen](https://libeigen.gitlab.io/docs/TopicUsingIntelMKL.html).
- `OGS_USE_PETSC_MKL_EIGEN_OPENMP` - Also enables OpenMP multithreading when PETSc and MKL is used. This pulls in another OpenMP implementation besides the Intel MKL OpenMP. **Experimental feature!**
[^MKL]: The `mkl_link_tool` (part of the MKL installation) is used for setting up necessary compiler flags. It is a 32-bit executable. On Arch Linux you need to enable the [multilib-repository](https://wiki.archlinux.org/title/official_repositories#Enabling_multilib) and then install the package `lib32-gcc-libs` (otherwise you may get this error when trying to run it: `mkl_link_tool: No such file or directory`) On other Linux distributions you have to install the package `lib32stdc++6` (Ubuntu / Debian) or `libstdc++.i686` (yum-based)! On Windows please also install the *Intel oneAPI Threading Building Blocks* during installation!