Allow to override build date with SOURCE_DATE_EPOCH #170
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in order to make builds reproducible. See https://reproducible-builds.org/ for why this is good and https://reproducible-builds.org/specs/source-date-epoch/ for the definition of this variable. Also consistently use ISO 8601 date format to be understood everywhere. This also avoids %B and %h that are locale-dependent. Also use UTC/gmtime to be independent of timezone. Also rewrite the shell `date` calls into perl to avoid trouble with the different date command implementations. This PR was done while working on reproducible builds for openSUSE.
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Allow to override build date with
SOURCE_DATE_EPOCHin order to make builds reproducible.
See https://reproducible-builds.org/ for why this is good
and https://reproducible-builds.org/specs/source-date-epoch/
for the definition of this variable.
Also consistently use ISO 8601 date format to be understood everywhere.
This also avoids %B and %h that are locale-dependent.
Also use UTC/gmtime to be independent of timezone.
Also rewrite the shell
datecalls into perl to avoidtrouble with the different date command implementations.
This PR was done while working on reproducible builds for openSUSE.