From d978f6c0ca3f386a39fa57680a8bdb9369cd4a3e Mon Sep 17 00:00:00 2001
From: Algiane Froehly <algiane@gmail.com>
Date: Tue, 5 Dec 2023 17:18:12 +0100
Subject: [PATCH] Attempt to fix issue with openmpi-5 and --help command to
 detect oversubscribe command line option support.

---
 CMakeLists.txt | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 504f7d2f..f0f64b95 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -178,13 +178,11 @@ MESSAGE( STATUS "Compilation with mpi" )
 SET( LIBRARIES ${MPI_C_LIBRARIES} ${LIBRARIES} )
 SET( LIBRARIES ${MPI_CXX_LIBRARIES} ${LIBRARIES} )
 
-EXECUTE_PROCESS ( COMMAND  ${MPIEXEC} --help mapping
+EXECUTE_PROCESS ( COMMAND  ${MPIEXEC} --oversubscribe sleep 1
   RESULT_VARIABLE CMD_ERROR
   OUTPUT_VARIABLE CMD_OUTPUT )
 
-STRING(REGEX REPLACE "\"" " " CMD_OUT "${CMD_OUTPUT}")
-
-IF ( "${CMD_OUT}" MATCHES "oversubscribe" )
+IF ( "${CMD_ERROR}" MATCHES "0" )
   SET ( MPI_ARGS "-oversubscribe" )
 ENDIF()