[U-Boot] [PATCH] Makefile: Use correct timezone for U_BOOT_TZ

[Chris Packham]

(note I had some patman config that erroneously included extra people
on the original Cc list, I've now dropped them)

On Sat, Aug 1, 2015 at 5:05 AM, Paul Kocialkowski <contact at paulk.fr> wrote:
> Le vendredi 31 juillet 2015 à 22:04 +1200, Chris Packham a écrit :
>> When building with SOURCE_DATE_EPOCH the timezone is in UTC. When
>> building normally the timezone is taken from the build machine's locale
>> setting.
>
> Thanks a lot for introducing this, I thought it might disturb a few
> people.
>
>> Fixes: f3f431a71272 ("Reproducible U-Boot build support, using
>> SOURCE_DATE_EPOCH")
>
> It is incorrect to say that your patch fixes my commit, because my
> commit didn't introduce anything unexpected or faulty.
>
> If anything, it was merged before people gave their opinion about
> whether UTC should be default. I was also going to introduce a patch
> like yours later. For the record, UTC is default for Coreboot's
> timestamps.
>
> Thus, please remove that line.

Done. v2 on it's way.

The other mailing list thread also talked about the possibility of
having SOURCE_DATE_TZOFFSET I'll look at a proof of concept for that.

> Otherwise, this is:
> Tested-By: Paul Kocialkowski <contact at paulk.fr>
>
>> Signed-off-by: Chris Packham <judge.packham at gmail.com>
>> ---
>> Hopefully this will suit everyone. I've done a quick sanity test with
>> sandbox and the date shown in the version output looks to be what I
>> expect with/without SOURCE_DATE_EPOCH.
>>
>>  Makefile | 14 ++++++++++----
>>  1 file changed, 10 insertions(+), 4 deletions(-)
>>
>> diff --git a/Makefile b/Makefile
>> index 394ed09..f75c730 100644
>> --- a/Makefile
>> +++ b/Makefile
>> @@ -1230,10 +1230,16 @@ define filechk_version.h
>>  endef
>>
>>  define filechk_timestamp.h
>> -     (SOURCE_DATE="$${SOURCE_DATE_EPOCH:+@$$SOURCE_DATE_EPOCH}"; \
>> -     LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
>> -     LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TIME "%T"'; \
>> -     LC_ALL=C date -u -d "$${SOURCE_DATE:-now}" +'#define U_BOOT_TZ "%z"' )
>> +     (if test -n "$${SOURCE_DATE_EPOCH}"; then \
>> +             SOURCE_DATE="@$${SOURCE_DATE_EPOCH}"; \
>> +             LC_ALL=C date -u -d "$${SOURCE_DATE}" +'#define U_BOOT_DATE "%b %d %C%y"'; \
>> +             LC_ALL=C date -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TIME "%T"'; \
>> +             LC_ALL=C date -u -d "$${SOURCE_DATE}" +'#define U_BOOT_TZ "%z"'; \
>> +     else \
>> +             LC_ALL=C date +'#define U_BOOT_DATE "%b %d %C%y"'; \
>> +             LC_ALL=C date +'#define U_BOOT_TIME "%T"'; \
>> +             LC_ALL=C date +'#define U_BOOT_TZ "%z"'; \
>> +     fi)
>>  endef
>>
>>  $(version_h): include/config/uboot.release FORCE
>