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Allow to override build date with SOURCE_DATE_EPOCH 

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.

This date call works with different variants of date.
Also use UTC to be independent of timezone.

Signed-off-by: Bernhard M. Wiedemann <bwiedemann@suse.de>
This commit is contained in:
Bernhard M. Wiedemann 2022-10-31 10:06:59 +01:00 committed by yxxhero
parent e919b4b1d2
commit 5f2b6994a6
1 changed files with 7 additions and 1 deletions
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8
Makefile
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@ -4,12 +4,18 @@ PKGS := $(shell go list ./... | grep -v /vendor/)
TAG ?= $(shell git describe --tags --abbrev=0 HEAD) TAG ?= $(shell git describe --tags --abbrev=0 HEAD)
LAST = $(shell git describe --tags --abbrev=0 HEAD^) LAST = $(shell git describe --tags --abbrev=0 HEAD^)
BODY = "`git log ${LAST}..HEAD --oneline --decorate` `printf '\n\#\#\# [Build Info](${BUILD_URL})'`" BODY = "`git log ${LAST}..HEAD --oneline --decorate` `printf '\n\#\#\# [Build Info](${BUILD_URL})'`"
DATE_FMT = +"%Y-%m-%dT%H:%M:%S%z"
ifdef SOURCE_DATE_EPOCH
BUILD_DATE ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "$(DATE_FMT)" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "$(DATE_FMT)" 2>/dev/null || date -u "$(DATE_FMT)")
else
BUILD_DATE ?= $(shell date "$(DATE_FMT)")
endif
# The ldflags for the Go build process to set the version related data # The ldflags for the Go build process to set the version related data
GO_BUILD_VERSION_LDFLAGS=\ GO_BUILD_VERSION_LDFLAGS=\
-X go.szostok.io/version.version=$(TAG) \ -X go.szostok.io/version.version=$(TAG) \
-X go.szostok.io/version.buildDate=$(shell date +"%Y-%m-%dT%H:%M:%S%z") \ -X go.szostok.io/version.buildDate=$(BUILD_DATE) \
-X go.szostok.io/version.commit=$(shell git rev-parse --short HEAD) \ -X go.szostok.io/version.commit=$(shell git rev-parse --short HEAD) \
-X go.szostok.io/version.commitDate=$(shell git log -1 --date=format:"%Y-%m-%dT%H:%M:%S%z" --format=%cd) \ -X go.szostok.io/version.commitDate=$(shell git log -1 --date=format:"%Y-%m-%dT%H:%M:%S%z" --format=%cd) \
-X go.szostok.io/version.dirtyBuild=false -X go.szostok.io/version.dirtyBuild=false