Created attachment 4197 [details] diffoscope output comparing two builds on two different dates Please see the attached diffoscope outputs. Two clean builds done on two different days result in binary different files due to embedded date strings.
Created attachment 4198 [details] diffoscope output comparing two builds on two different dates (libjpeg62)
Seems configuring with "with_build_date=xxx" can solve this.
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=e76cba5ae12335f9cdefb41302217cf9281aaaaf