From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Andreas_Bie=c3=9fmann?= Date: Wed, 2 Sep 2015 09:41:05 +0200 Subject: [U-Boot] [PATCH v3] Makefile: fix SOURCE_DATE_EPOCH for *BSD host In-Reply-To: <1441127022.2240.1.camel@aldrin> References: <1440667806-7428-1-git-send-email-andreas.devel@googlemail.com> <1440750595-11616-1-git-send-email-andreas.devel@googlemail.com> <1441127022.2240.1.camel@aldrin> Message-ID: <55E6A811.4080503@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 09/01/2015 07:03 PM, Paul Kocialkowski wrote: > Le vendredi 28 ao?t 2015 ? 10:29 +0200, Andreas Bie?mann a ?crit : >> The SOURCE_DATE_EPOCH mechanism for reproducible builds require some date(1) >> with -d switch to print the relevant date and time strings of another point of >> time. >> >> In other words it requires some date(1) that behaves like the GNU date(1) [1]. >> The BSD date(1) [2] on the other hand has the same switch but with a different >> meaning. >> >> Respect this and check the date(1) abilities before usage, error on non >> working version. Use the well known pre- and suffixes for the GNU variant of >> a tool on *BSD hosts to search for a working date(1) version. > > Looks good to me! Have you actually tried setting SOURCE_DATE_EPOCH to a > fixed value, building U-Boot twice and checking that the produced file > is the very same? It works: ---8<--- andreas at imac % shasum /tmp/u-boot.img.1441178617 u-boot.img /tmp/u-boot.bin.1441178617 u-boot.bin /tmp/boot.bin.1441178617 boot.bin 1a779ba79efa1874a5b307650392737d861005bb /tmp/u-boot.img.1441178617 1a779ba79efa1874a5b307650392737d861005bb u-boot.img dbe56f02e510ee251a2e5f9f8b6ce430884557bb /tmp/u-boot.bin.1441178617 dbe56f02e510ee251a2e5f9f8b6ce430884557bb u-boot.bin 4aa9b3ba9641febae0bfdbb374c54c287b463ac0 /tmp/boot.bin.1441178617 4aa9b3ba9641febae0bfdbb374c54c287b463ac0 boot.bin andreas at imac % uname -a Darwin imac 14.5.0 Darwin Kernel Version 14.5.0: Wed Jul 29 02:26:53 PDT 2015; root:xnu-2782.40.9~1/RELEASE_X86_64 x86_64 andreas@imac % git describe v2015.10-rc2-304-gb7e84c9 --->8--- Both are fresh builds with the same SOURCE_DATE_EPOCH set. However using the time stamp from timestamp_autogenerated.h does _not_ work due to the wrong TZ (+0200 for me, UTC with SOURCE_DATE_EPOCH). But I guess this is a known problem. Andreas