Subject: bug#32342: [PATCH] Allow to override time_stamp with SOURCE_DATE_EPOCH

From: Paul Eggert <[email-masked]>
Date: Thu, 2 Aug 2018 09:01:05 -0700

On 08/02/2018 02:03 AM, Bernhard M. Wiedemann wrote:
> +        if ((source_date_epoch = getenv("SOURCE_DATE_EPOCH")) == NULL || (stamp = strtol(source_date_epoch, NULL, 10))

That won't work after 2038 on x32. Also, I'm leery of having environment 
variables affect standard utilities' behavior, though perhaps we could 
shoehorn this in.