From 82b930ad8ad27f90dc994ae7919a85ca51c92c09 Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Wed, 10 Jun 2020 10:12:00 -0400
Subject: [PATCH] Add missing instantiation for PETSc with complex values

---
 source/lac/affine_constraints.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/source/lac/affine_constraints.cc b/source/lac/affine_constraints.cc
index 2ddddb5325..4d44af2856 100644
--- a/source/lac/affine_constraints.cc
+++ b/source/lac/affine_constraints.cc
@@ -109,6 +109,14 @@ INSTANTIATE_DLTG_BLOCK_VECTORMATRIX(PETScWrappers::MPI::BlockSparseMatrix,
 INSTANTIATE_DLTG_MATRIX(PETScWrappers::SparseMatrix);
 INSTANTIATE_DLTG_MATRIX(PETScWrappers::MPI::SparseMatrix);
 INSTANTIATE_DLTG_MATRIX(PETScWrappers::MPI::BlockSparseMatrix);
+#  ifndef DOXYGEN
+#    ifdef DEAL_II_PETSC_WITH_COMPLEX
+template void
+dealii::AffineConstraints<double>::distribute<
+  dealii::PETScWrappers::MPI::Vector>(
+  dealii::PETScWrappers::MPI::Vector &) const;
+#    endif
+#  endif
 #endif
 
 #ifdef DEAL_II_WITH_TRILINOS
-- 
2.39.5