STYLE: include mpirun path information in top-level Allwmake

- provides some feedback about which mpi is being used

Allwmake

@@ -14,15 +14,20 @@ cd ${0%/*} && wmakeCheckPwd "$WM_PROJECT_DIR" 2>/dev/null || {
 . $WM_PROJECT_DIR/wmake/scripts/AllwmakeParseArguments
 
 #------------------------------------------------------------------------------
-echo "========================================"
-date "+%Y-%m-%d %H:%M:%S %z" 2>/dev/null || echo "date is unknown"
-echo "Starting compile ${WM_PROJECT_DIR##*/} ${0##*}"
+# Preamble. Report compiler version
 case "$WM_COMPILER" in
     Gcc*)    gcc --version 2>/dev/null | sed -ne '1p' ;;
     Clang*)  clang --version 2>/dev/null | sed -ne '1p' ;;
 esac
+# Preamble. Report mpirun location
+command -v mpirun 2>/dev/null || true
+
+echo "========================================"
+date "+%Y-%m-%d %H:%M:%S %z" 2>/dev/null || echo "date is unknown"
+echo "Starting compile ${WM_PROJECT_DIR##*/} ${0##*}"
 echo "  $WM_COMPILER $WM_COMPILER_TYPE compiler"
 echo "  ${WM_OPTIONS}, with ${WM_MPLIB} ${FOAM_MPI}"
+echo "========================================"
 echo
 
 # Compile wmake tools