diff --git a/openpgm/pgm/version_generator.py b/openpgm/pgm/version_generator.py

index e489aef..581eabe 100755

--- a/openpgm/pgm/version_generator.py

+++ b/openpgm/pgm/version_generator.py

@@ -1,19 +1,25 @@

-#!/usr/bin/python

+#!/usr/bin/python3

 import os

 import platform

 import time

-build_date = time.strftime ("%Y-%m-%d")

-build_time = time.strftime ("%H:%M:%S")

-build_rev = filter (str.isdigit, "$Revision$")

+timestamp = time.gmtime(int(os.environ.get('SOURCE_DATE_EPOCH', time.time())))

+build_date = time.strftime ("%Y-%m-%d", timestamp)

+build_time = time.strftime ("%H:%M:%S", timestamp)

+build_rev = ''.join (list (filter (str.isdigit, "$Revision$")))

+build_system = platform.system()

+build_machine = platform.machine()

+if 'SOURCE_DATE_EPOCH' in os.environ:

+        build_system = 'BuildSystem'

+        build_machine = 'BuildMachine'

-print """

+print ("""

 /* vim:ts=8:sts=8:sw=4:noai:noexpandtab

  * 

  * OpenPGM version.

  *

- * Copyright (c) 2006-2011 Miru Limited.

+ * Copyright (c) 2006-2014 Miru Limited.

  *

  * This library is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public

@@ -41,15 +47,16 @@

 const unsigned pgm_major_version = 5;

 const unsigned pgm_minor_version = 2;

 const unsigned pgm_micro_version = 122;

-const char* pgm_build_date = "%s";

-const char* pgm_build_time = "%s";

-const char* pgm_build_system = "%s";

-const char* pgm_build_machine = "%s";

-const char* pgm_build_revision = "%s";

+const char* pgm_build_date = "{0}";

+const char* pgm_build_time = "{1}";

+const char* pgm_build_system = "{2}";

+const char* pgm_build_machine = "{3}";

+const char* pgm_build_revision = "{4}";

 /* eof */

-"""%(build_date, build_time, platform.system(), platform.machine(), build_rev)

+""".format (build_date, build_time, build_system, build_machine, build_rev))

 # end of file

+