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Merge pull request #48708 from bmwiedemann/date
Automatic merge from submit-queue (batch tested with PRs 49222, 49333, 48708, 49337) Allow to override build date 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. Background: issue #48710 when trying to build the kubernetes package for the openSUSE Linux distribution ``` /usr/bin/hyperkube /usr/bin/kubeadm /usr/src/kubernetes/platforms/linux/amd64/e2e.test ``` had a date+time string embedded in them in the format 2018-08-15T19:08:34Z which meant that each build produced new binaries even when nothing actually changed. Those then had to be synced to mirrors, wasting their and our users' bandwidth.
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@ -130,7 +130,9 @@ kube::version::ldflag() {
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kube::version::ldflags() {
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kube::version::get_version_vars
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local -a ldflags=($(kube::version::ldflag "buildDate" "$(date -u +'%Y-%m-%dT%H:%M:%SZ')"))
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local buildDate=
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[[ -z ${SOURCE_DATE_EPOCH-} ]] || buildDate="--date=@${SOURCE_DATE_EPOCH}"
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local -a ldflags=($(kube::version::ldflag "buildDate" "$(date ${buildDate} -u +'%Y-%m-%dT%H:%M:%SZ')"))
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if [[ -n ${KUBE_GIT_COMMIT-} ]]; then
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ldflags+=($(kube::version::ldflag "gitCommit" "${KUBE_GIT_COMMIT}"))
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ldflags+=($(kube::version::ldflag "gitTreeState" "${KUBE_GIT_TREE_STATE}"))
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