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Add --version option

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* Add flag to display the version for each binary. It is based on `git describe` but adds
  a number to the PATCH level if we are between annotated tags, so makes it semver.org
 compatible. Use the "-ldflags" method that also works with go 1.17.
* Use Makefile bash and sed magic to do PATCH level increase if needed.

Co-authored-by: Bernhard Reiter <bernhard@intevation.de>
This commit is contained in:
Fadi Abbud 2022-04-13 14:27:11 +02:00 • committed by GitHub
parent de9c2b9663
commit 6fe6907c1d
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5 changed files with 57 additions and 6 deletions
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18
Makefile
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@ -37,6 +37,22 @@ tag_checked_out:
git checkout -q tags/${BUILDTAG}
@echo Don\'t forget that we are in checked out tag $(BUILDTAG) now.
# use bash shell arithmetic and sed to turn a `git describe` version
# into a semver version. For this we increase the PATCH number, so that
# any commit after a tag is considered newer than the semver from the tag
# without an optional 'v'
GITDESC := $(shell git describe)
GITDESCPATCH := $(shell echo '$(GITDESC)' | sed -E 's/v?[0-9]+\.[0-9]+\.([0-9]+)[-+]?.*/\1/')
SEMVERPATCH := $(shell echo $$(( $(GITDESCPATCH) + 1 )))
# Hint: The regexp in the next line only matches if there is a hyphen (`-`)
# and we can assume that git describe has added a string after the tag
SEMVER := $(shell echo '$(GITDESC)' | sed -E 's/v?([0-9]+\.[0-9]+\.)([0-9]+)(-.*)/\1$(SEMVERPATCH)\3/' )
testsemver:
@echo from \'$(GITDESC)\' transformed to \'$(SEMVER)\'
# Set -ldflags parameter to pass the semversion.
LDFLAGS = -ldflags "-X github.com/csaf-poc/csaf_distribution/util.SemVersion=$(SEMVER)"
# Build binaries and place them under bin-$(GOOS)-$(GOARCH)
# Using 'Target-specific Variable Values' to specify the build target system
@ -48,7 +64,7 @@ build_win: GOOS = windows
build_linux build_win:
$(eval BINDIR = bin-$(GOOS)-$(GOARCH)/ )
$(MKDIR) $(BINDIR)
env GOARCH=$(GOARCH) GOOS=$(GOOS) $(BUILD) -o $(BINDIR) -v ./cmd/...
env GOARCH=$(GOARCH) GOOS=$(GOOS) $(BUILD) -o $(BINDIR) $(LDFLAGS) -v ./cmd/...
# Remove bin-*-* directories