add missing instantiations

diff --git a/source/lac/affine_constraints.cc b/source/lac/affine_constraints.cc
index dd160ed0926612e160aa159b6bf5d3be6438d298..04ebc8ea521f02421c36a7be1dc216875d9f9782 100644 (file)
--- a/source/lac/affine_constraints.cc
+++ b/source/lac/affine_constraints.cc
@@ -125,6 +125,14 @@ INSTANTIATE_DLTG_BLOCK_VECTORMATRIX(TrilinosWrappers::BlockSparseMatrix,
 
 INSTANTIATE_DLTG_MATRIX(TrilinosWrappers::SparseMatrix);
 INSTANTIATE_DLTG_MATRIX(TrilinosWrappers::BlockSparseMatrix);
+
+#  ifdef DEAL_II_TRILINOS_WITH_TPETRA
+// FIXME: This mixed variant is needed for multigrid and matrix free.
+template void
+dealii::AffineConstraints<double>::distribute<
+  dealii::LinearAlgebra::TpetraWrappers::Vector<float>>(
+  dealii::LinearAlgebra::TpetraWrappers::Vector<float> &) const;
+#  endif
 #endif
 
 /*