Added CMake option OGS_EIGEN_DYNAMIC for using dyn. all. matrices.

CMakeLists.txt

@@ -73,6 +73,7 @@ option(OGS_USE_MPI "Use MPI" OFF)
 
 # Eigen
 option(OGS_USE_EIGEN "Use EIGEN for local matrix and vector" ON)
+option(OGS_EIGEN_DYNAMIC "Use dynamically allocated shape matrices" OFF)
 option(EIGEN_NO_DEBUG "Disables Eigen's assertions" OFF)
 
 # Logging
@@ -130,6 +131,9 @@ if(OGS_USE_EIGEN)
 	if (EIGEN_NO_DEBUG)
 		add_definitions(-DEIGEN_NO_DEBUG)
 	endif()
+	if(OGS_EIGEN_DYNAMIC)
+		add_definitions(-DEIGEN_DYNAMIC_MATRICES)
+	endif()
 endif()
 
 ######################

NumLib/Fem/ShapeMatrixPolicy.h

@@ -107,8 +107,11 @@ struct EigenDynamicShapeMatrixPolicy
 
 /// Default choice of the ShapeMatrixPolicy.
 template <typename ShapeFunction, unsigned GlobalDim>
+#if EIGEN_DYNAMIC_MATRICES
+using ShapeMatrixPolicyType = EigenDynamicShapeMatrixPolicy<ShapeFunction, GlobalDim>;
+#else
 using ShapeMatrixPolicyType = EigenFixedShapeMatrixPolicy<ShapeFunction, GlobalDim>;
-//using ShapeMatrixPolicyType = EigenDynamicShapeMatrixPolicy<ShapeFunction, GlobalDim>;
+#endif
 
 #endif  // OGS_USE_EIGEN