Also added CMake option
OGS_EIGEN_USE_MKL, see https://eigen.tuxfamily.org/dox/TopicUsingIntelMKL.html.
- Do we need 64-bit indices? See https://www.smcm.iqfr.csic.es/docs/intel/mkl/mkl_userguide/MKL_UG_linking_your_application/Support_for_ILP64_Programming.htm -> Can be enabled with
MKL_USE_interface=ilp64but seems to be not supported by Eigen
- Do we have a benchmark which uses MKL (for testing)? ->
Fixes #3259 (closed).
Feature description was added to the changelog
Tests covering your feature were added?
Any new feature or behavior change was documented?