https://gerrit.osmocom.org/#/c/osmo-iuh/+/9387
commit 7a97fcafedead40b311eef65467480bd72fdd18b
Author: Bernhard M. Wiedemann <bwiedemann@suse.de>
Date:   Wed May 30 13:20:29 2018 +0200

    asn1tostruct: allow to override build date
    
    in order to make builds reproducible.
    See https://reproducible-builds.org/ for why this is good
    and https://reproducible-builds.org/specs/source-date-epoch/
    for the definition of this variable.
    
    Also do not record build user name to not have it vary.
    
    Change-Id: I5cfa465cc82f009f28dd7f12ced0e72a05fda842

diff --git a/asn1/utils/asn1tostruct.py b/asn1/utils/asn1tostruct.py
index 0bba9dd..3c33980 100755
--- a/asn1/utils/asn1tostruct.py
+++ b/asn1/utils/asn1tostruct.py
@@ -4,6 +4,7 @@ import re, os, sys, string
 import datetime
 import getopt
 import getpass
+import time
 
 version = "0.5osmo1"
 
@@ -33,11 +34,11 @@ def printDebug(string):
         print string
 
 def outputHeaderToFile(f, filename):
-    now = datetime.datetime.now()
+    now = datetime.datetime.utcfromtimestamp(int(os.environ.get('SOURCE_DATE_EPOCH', time.time())))
     f.write("/*******************************************************************************\n")
     f.write(" * This file had been created by asn1tostruct.py script v%s\n" % (version))
     f.write(" * Please do not modify this file but regenerate it via script.\n")
-    f.write(" * Created on: %s by %s\n * from %s\n" % (str(now), getpass.getuser(), filenames))
+    f.write(" * Created on: %s\n * from %s\n" % (str(now), filenames))
     f.write(" ******************************************************************************/\n")
 
 def lowerFirstCamelWord(word):