On Fri, 17 Dec 2021 17:54:46 GMT, Erik Joelsson <er...@openjdk.org> wrote:

>> If "reproducible build" is enabled, then utilize the new --date option in 
>> the building of jar's and jmods.
>> Validating the boot jdk supports --date for the building of the jars.
>> 
>> Signed-off-by: Andrew Leonard <anleo...@redhat.com>
>
> make/common/MakeBase.gmk line 148:
> 
>> 146:   ifeq ($(SOURCE_DATE_ISO_8601), )
>> 147:     # GNU date format did not work, try BSD date options
>> 148:     SOURCE_DATE_ISO_8601 := $(shell $(DATE) -u -j -f "%s" 
>> "$(SOURCE_DATE_EPOCH)" +"%Y-%m-%dT%H:%M:%SZ" 2> /dev/null)
> 
> Could we maybe figure out the date command line to use in configure instead 
> to avoid the trial and error at build time?

I based this trial and error based on util.m4 code and copied the method, so 
yes I can store the result from then...

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PR: https://git.openjdk.java.net/jdk/pull/6878

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