diff -ru openldap-2.4.46.orig/build/mkversion openldap-2.4.46/build/mkversion
--- openldap-2.4.46.orig/build/mkversion	2018-10-25 18:46:10.383750480 +1300
+++ openldap-2.4.46/build/mkversion	2018-10-25 18:46:33.156232586 +1300
@@ -50,7 +50,15 @@
 fi
 
 APPLICATION=$1
-WHOWHERE="$USER@`uname -n`:`pwd`"
+if [ -n "${SOURCE_DATE_EPOCH}" ]; then
+   WHOWHERE="openldap"
+   DATE=$(date -d@$SOURCE_DATE_EPOCH +' %b %d %Y ')
+   TIME=$(date -d@$SOURCE_DATE_EPOCH +' %H:%M:%S ')
+else
+   WHOWHERE="$USER@$(uname -n):$(pwd)"
+   DATE='" __DATE__ "'
+   TIME='" __TIME__ "'
+fi
 
 cat << __EOF__
 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
@@ -72,7 +80,7 @@
 "COPYING RESTRICTIONS APPLY\n";
 
 $static $const char $SYMBOL[] =
-"@(#) \$$PACKAGE: $APPLICATION $VERSION (" __DATE__ " " __TIME__ ") \$\n"
+"@(#) \$$PACKAGE: $APPLICATION $VERSION ($DATE $TIME) \$\n"
 "\t$WHOWHERE\n";
 
 __EOF__