From 363a07550557b64571e27f0ccdf9531ad969d7c5 Mon Sep 17 00:00:00 2001
From: Matthias Maier <tamiko@43-1.org>
Date: Sun, 11 Dec 2022 00:55:03 -0600
Subject: [PATCH] Tests: Use find_package(UnixCommands) to detect a suitable
 shell

---
 cmake/macros/macro_deal_ii_add_test.cmake     | 7 +++++--
 cmake/macros/macro_deal_ii_pickup_tests.cmake | 5 +++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/cmake/macros/macro_deal_ii_add_test.cmake b/cmake/macros/macro_deal_ii_add_test.cmake
index 113e550ca3..835e6a1bc9 100644
--- a/cmake/macros/macro_deal_ii_add_test.cmake
+++ b/cmake/macros/macro_deal_ii_add_test.cmake
@@ -65,6 +65,9 @@
 #
 # The following variables must be set:
 #
+#  BASH
+#     - Complete path to the bash shell.
+#
 #   NUMDIFF_EXECUTABLE
 #     - Complete path to the numdiff binary.
 #
@@ -465,7 +468,7 @@ function(deal_ii_add_test _category _test_name _comparison_file)
 
       add_custom_command(OUTPUT ${_test_directory}/output
         COMMAND TEST_N_THREADS=${_n_threads}
-          sh ${DEAL_II_PATH}/${DEAL_II_SHARE_RELDIR}/scripts/run_test.sh
+          ${BASH} ${DEAL_II_PATH}/${DEAL_II_SHARE_RELDIR}/scripts/run_test.sh
           run "${_test_full}" ${_run_args}
         COMMAND ${PERL_EXECUTABLE}
           -pi ${DEAL_II_PATH}/${DEAL_II_SHARE_RELDIR}/scripts/normalize.pl
@@ -492,7 +495,7 @@ function(deal_ii_add_test _category _test_name _comparison_file)
         file(GLOB _comparison_files ${_comparison_file} ${_comparison_file}.*)
 
         add_custom_command(OUTPUT ${_test_directory}/diff
-          COMMAND sh ${DEAL_II_PATH}/${DEAL_II_SHARE_RELDIR}/scripts/run_test.sh
+          COMMAND ${BASH} ${DEAL_II_PATH}/${DEAL_II_SHARE_RELDIR}/scripts/run_test.sh
             diff "${_test_full}" "${NUMDIFF_EXECUTABLE}"
             "${_comparison_file}" ${_run_args}
           WORKING_DIRECTORY
diff --git a/cmake/macros/macro_deal_ii_pickup_tests.cmake b/cmake/macros/macro_deal_ii_pickup_tests.cmake
index 85b43937ef..e81c90080a 100644
--- a/cmake/macros/macro_deal_ii_pickup_tests.cmake
+++ b/cmake/macros/macro_deal_ii_pickup_tests.cmake
@@ -85,6 +85,11 @@ endmacro()
 
 
 macro(deal_ii_pickup_tests)
+  #
+  # Find bash and perl interpreter:
+  #
+
+  find_package(UnixCommands REQUIRED)
   find_package(Perl REQUIRED)
 
   #
-- 
2.39.5