Check for OPAL_PREFIX and set corresponding PMIX_PREFIX if found

Signed-off-by: Ralph Castain <rhc@open-mpi.org>

orte/mca/ess/base/ess_base_std_prolog.c

@@ -9,6 +9,7 @@
  *                         University of Stuttgart.  All rights reserved.
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
+ * Copyright (c) 2017      Intel, Inc.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -28,6 +29,7 @@
 #include <unistd.h>
 #endif
 
+#include "opal/util/opal_environ.h"
 #include "orte/mca/errmgr/errmgr.h"
 #include "orte/util/show_help.h"
 #include "orte/runtime/orte_wait.h"
@@ -39,6 +41,7 @@ int orte_ess_base_std_prolog(void)
 {
     int ret;
     char *error = NULL;
+    char *evar;
 
     /* Initialize the ORTE data type support */
     if (ORTE_SUCCESS != (ret = orte_dt_init())) {
@@ -56,6 +59,10 @@ int orte_ess_base_std_prolog(void)
             goto error;
         }
     }
+    /* check for OPAL_PREFIX */
+    if (NULL != (evar = getenv("OPAL_PREFIX"))) {
+        opal_setenv("PMIX_PREFIX", evar, false, &environ);
+    }
 
     return ORTE_SUCCESS;