From 89af5d058f8551bc2f8ffdc08569e81d7f190a6b Mon Sep 17 00:00:00 2001
From: Sergey Kosukhin <sergey.kosukhin@mpimet.mpg.de>
Date: Wed, 21 Feb 2024 10:15:57 +0100
Subject: [PATCH] m4: ACX_PROG_MPIRUN: redirect stderr to config.log.

---
 m4/acx_prog_mpirun.m4 | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/m4/acx_prog_mpirun.m4 b/m4/acx_prog_mpirun.m4
index cab6ccf..41ae42c 100644
--- a/m4/acx_prog_mpirun.m4
+++ b/m4/acx_prog_mpirun.m4
@@ -122,9 +122,10 @@ m4_define([_ACX_PROG_MPIRUN],
          for acx_candidate in "$[@]"; do
             _AS_ECHO_LOG(
               [acx_exec_result=`$acx_candidate -n m4_default([$6], [2]) dnl
-./conftest$ac_exeext 2>/dev/null`])
+./conftest$ac_exeext 2>&AS_MESSAGE_LOG_FD`])
             acx_exec_result=dnl
-`$acx_candidate -n m4_default([$6], [2]) ./conftest$ac_exeext 2>/dev/null`
+`$acx_candidate -n m4_default([$6], [2]) dnl
+./conftest$ac_exeext 2>&AS_MESSAGE_LOG_FD`
             acx_status=$?
             _AS_ECHO_LOG([\$? = $acx_status])
             AS_IF([test $acx_status -eq 0],