From ffc5fddeb105d2292d444993a3719be1f753f95b Mon Sep 17 00:00:00 2001
From: "H. Joe Lee" <hyoklee@hdfgroup.org>
Date: Fri, 13 Oct 2023 11:40:13 -0500
Subject: Fix link error on clang17/gfortran13/macOS-13 (#3666) (#3671)

---
 fortran/examples/ph5example.f90 | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/fortran/examples/ph5example.f90 b/fortran/examples/ph5example.f90
index 05fedbd..138969e 100644
--- a/fortran/examples/ph5example.f90
+++ b/fortran/examples/ph5example.f90
@@ -16,10 +16,10 @@
      PROGRAM DATASET
 
      USE HDF5 ! This module contains all necessary modules
+     USE MPI
 
      IMPLICIT NONE
 
-     INCLUDE 'mpif.h'
      CHARACTER(LEN=10), PARAMETER :: default_fname = "sds.h5"  ! Default name
      CHARACTER(LEN=8), PARAMETER :: dsetname = "IntArray" ! Dataset name
 
@@ -72,10 +72,8 @@
      CALL h5pset_fapl_mpio_f(plist_id, comm, info, error)
 
      !
-     ! Figure out the filename to use.  If your system does not support
-     ! getenv, comment that statement with this,
-     ! filename = ""
-     CALL getenv("HDF5_PARAPREFIX", filename)
+     ! Figure out the filename to use.
+     CALL get_environment_variable("HDF5_PARAPREFIX", filename)
      fnamelen = LEN_TRIM(filename)
      if ( fnamelen == 0 ) then
 	filename = default_fname
-- 
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