This updated patch also sets the date and time strings to the SOURCE_DATE_EPOCH.
Are you intending a SOURCE_DATE_EPOCH to be a Unix time value? I.e., an integer? This value format needs to be documented.
Unfortunately, your use of date -d is nonportable, it appears that only the GNU tools understand this option. It will fail on other platforms like *BSD, Solaris, that aren't using a GNU userland.
Why can't you simply provide an already formatted date & time that can be used directly, instead of needing to be reformatted here?
The WHOWHERE string will now be set to simply "openldap" in the case that a SOURCE_DATE_EPOCH is set.
Tait Communications Ltd hereby place the following modifications to OpenLDAP Software (and only these modifications) into the public domain. Hence, these modifications may be freely used and/or redistributed for any purpose with or without attribution and/or other notice.