From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 7 Sep 2022 21:37:10 +0000 (-0600)
Subject: Improve error message.
X-Git-Tag: v9.5.0-rc1~936^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbe6b5c84f538757167d18b165a2cf8c282432ef;p=dealii.git

Improve error message.
---

diff --git a/source/base/data_out_base.cc b/source/base/data_out_base.cc
index a1c23ca2b2..e4d8710562 100644
--- a/source/base/data_out_base.cc
+++ b/source/base/data_out_base.cc
@@ -8825,7 +8825,11 @@ DataOutBase::write_hdf5_parallel(
   (void)mesh_filename;
   (void)solution_filename;
   (void)comm;
-  AssertThrow(false, ExcMessage("HDF5 support is disabled."));
+  AssertThrow(false,
+              ExcMessage(
+                "This function requires that deal.II is configured "
+                "with HDF5 support, but when you called 'cmake', HDF5 support "
+                "was not detected."));
 #else
 
   const unsigned int n_ranks = Utilities::MPI::n_mpi_processes(comm);
diff --git a/source/lac/scalapack.cc b/source/lac/scalapack.cc
index 5d01e49771..ff104138d2 100644
--- a/source/lac/scalapack.cc
+++ b/source/lac/scalapack.cc
@@ -2611,7 +2611,11 @@ ScaLAPACKMatrix<NumberType>::save(
 #  ifndef DEAL_II_WITH_HDF5
   (void)filename;
   (void)chunk_size;
-  AssertThrow(false, ExcMessage("HDF5 support is disabled."));
+  AssertThrow(false,
+              ExcMessage(
+                "This function requires that deal.II is configured "
+                "with HDF5 support, but when you called 'cmake', HDF5 support "
+                "was not detected."));
 #  else
 
   std::pair<unsigned int, unsigned int> chunks_size_ = chunk_size;
@@ -3043,7 +3047,11 @@ ScaLAPACKMatrix<NumberType>::load(const std::string &filename)
 {
 #  ifndef DEAL_II_WITH_HDF5
   (void)filename;
-  AssertThrow(false, ExcMessage("HDF5 support is disabled."));
+  AssertThrow(false,
+              ExcMessage(
+                "This function requires that deal.II is configured "
+                "with HDF5 support, but when you called 'cmake', HDF5 support "
+                "was not detected."));
 #  else
 #    ifdef H5_HAVE_PARALLEL
   // implementation for configurations equipped with a parallel file system