From d83f322434b7239e76b686f489f7171bea1ad36f Mon Sep 17 00:00:00 2001
From: Daniel Arndt <arndtd@ornl.gov>
Date: Fri, 23 Apr 2021 09:50:50 -0400
Subject: [PATCH] Fix warning about ununed function in PETScWrappers source
 file

---
 source/lac/petsc_precondition.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/lac/petsc_precondition.cc b/source/lac/petsc_precondition.cc
index 510453baa7..a18d7684df 100644
--- a/source/lac/petsc_precondition.cc
+++ b/source/lac/petsc_precondition.cc
@@ -463,6 +463,7 @@ namespace PETScWrappers
 
 
 
+#  ifdef DEAL_II_PETSC_WITH_HYPRE
   namespace
   {
     /**
@@ -537,6 +538,7 @@ namespace PETScWrappers
       return string_type;
     }
   } // namespace
+#  endif
 
   PreconditionBoomerAMG::PreconditionBoomerAMG(
     const MPI_Comm &      comm,
-- 
2.39.5