Fix Error, empty output for info: 'VERSION'

When building releases, the definitive canonical version of podman (or
podman-remote) is needed.  Previously this was accomplished by scraping
`version/version.go`.  However, due to tooling differences across
platforms, this has proven problematic, unreliable, and hard to
maintain.

Fix this by building and caching a small golang binary who's only purpose
is to print the version number to stdout.  This not only provides a quick
and reliable way to determine the current version, it also acts as a check
on the version API vs tooling that relies on it.

Lastly, remove several `RELEASE_*` Makefile definitions which aren't
actually used anywhere.  These were originally added a very long time
ago to serve as part of a long since retired release process.  The
remaining items, were updated to make use of the new `.podmanversion`
binary on an as-required basis (i.e. not every time `make` is run).

Signed-off-by: Chris Evich <cevich@redhat.com>

4 files changed, 30 insertions, 85 deletions

diff --git a/.gitignore b/.gitignore
index 08e5309ee..d54013bfd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -31,6 +31,7 @@ release.txt
 /test/checkseccomp/checkseccomp
 /test/copyimg/copyimg
 /test/goecho/goecho
+/test/version/version
 /test/testvol/testvol
 .vscode*
 tags
diff --git a/Makefile b/Makefile
index cf796ed3c..12889c1c5 100644
--- a/Makefile
+++ b/Makefile
@@ -107,12 +107,9 @@ LIBSECCOMP_COMMIT := v2.3.3
 # caller may override in special circumstances if needed.
 GINKGOTIMEOUT ?= -timeout=90m
 
-RELEASE_VERSION ?= $(shell hack/get_release_info.sh VERSION)
-RELEASE_NUMBER ?= $(shell hack/get_release_info.sh NUMBER|sed -e 's/^v\(.*\)/\1/')
-RELEASE_DIST ?= $(shell hack/get_release_info.sh DIST)
-RELEASE_DIST_VER ?= $(shell hack/get_release_info.sh DIST_VER)
-RELEASE_ARCH ?= $(shell hack/get_release_info.sh ARCH)
-RELEASE_BASENAME := $(shell hack/get_release_info.sh BASENAME)
+# Conditional required to produce empty-output if binary not built yet.
+RELEASE_VERSION = $(shell if test -x test/version/version; then test/version/version; fi)
+RELEASE_NUMBER = $(shell echo "$(RELEASE_VERSION)" | sed -e 's/^v\(.*\)/\1/')
 
 # If non-empty, logs all output from server during remote system testing
 PODMAN_SERVER_LOG ?=
@@ -256,6 +253,9 @@ volume-plugin-test-img:
 test/goecho/goecho: .gopathok $(wildcard test/goecho/*.go)
 	$(GO) build $(BUILDFLAGS) -ldflags '$(LDFLAGS_PODMAN)' -o $@ ./test/goecho
 
+test/version/version: .gopathok version/version.go
+	$(GO) build -o $@ ./test/version/
+
 .PHONY: codespell
 codespell:
 	codespell -S bin,vendor,.git,go.sum,.cirrus.yml,"RELEASE_NOTES.md,*.xz,*.gz,*.ps1,*.tar,*.tgz,bin2img,*ico,*.png,*.1,*.5,copyimg,*.orig,apidoc.go" -L uint,iff,od,seeked,splitted,marge,ERRO,hist,ether -w
@@ -491,7 +491,7 @@ run-docker-py-tests:
 	-rm test/__init__.py
 
 .PHONY: localunit
-localunit: test/goecho/goecho
+localunit: test/goecho/goecho test/version/version
 	rm -rf ${COVERAGE_PATH} && mkdir -p ${COVERAGE_PATH}
 	$(GOBIN)/ginkgo \
 		-r \
@@ -581,7 +581,8 @@ system.test-binary: .install.ginkgo
 	$(GO) test -c ./test/system
 
 .PHONY: test-binaries
-test-binaries: test/checkseccomp/checkseccomp test/goecho/goecho install.catatonit
+test-binaries: test/checkseccomp/checkseccomp test/goecho/goecho install.catatonit test/version/version
+	@echo "Canonical source version: $(call err_if_empty,RELEASE_VERSION)"
 
 .PHONY: tests-included
 tests-included:
@@ -601,18 +602,18 @@ tests-expect-exit:
 ### Release/Packaging targets
 ###
 
-podman-release.tar.gz: binaries docs  ## Build all binaries, docs., and installation tree, into a tarball.
+podman-release.tar.gz: test/version/version binaries docs  ## Build all binaries, docs., and installation tree, into a tarball.
 	$(eval TMPDIR := $(shell mktemp -d podman_tmp_XXXX))
-	$(eval SUBDIR := podman-v$(RELEASE_NUMBER))
+	$(eval SUBDIR := podman-v$(call err_if_empty,RELEASE_NUMBER))
 	mkdir -p "$(TMPDIR)/$(SUBDIR)"
-	$(MAKE) install.bin install.man \
+	$(MAKE) install.bin install.remote install.man \
 		install.systemd "DESTDIR=$(TMPDIR)/$(SUBDIR)" "PREFIX=/usr"
 	tar -czvf $@ --xattrs -C "$(TMPDIR)" "./$(SUBDIR)"
 	-rm -rf "$(TMPDIR)"
 
-podman-remote-release-%.zip: podman-remote-% install-podman-remote-%-docs  ## Build podman-remote for GOOS=%, docs., and installation zip.
+podman-remote-release-%.zip: test/version/version podman-remote-% install-podman-remote-%-docs  ## Build podman-remote for GOOS=%, docs., and installation zip.
 	$(eval TMPDIR := $(shell mktemp -d podman_tmp_XXXX))
-	$(eval SUBDIR := podman-$(RELEASE_NUMBER))
+	$(eval SUBDIR := podman-$(call err_if_empty,RELEASE_NUMBER))
 	mkdir -p "$(TMPDIR)/$(SUBDIR)"
 	$(MAKE) \
 		GOOS=$* \
@@ -627,14 +628,15 @@ podman-remote-release-%.zip: podman-remote-% install-podman-remote-%-docs  ## Bu
 	-rm -rf "$(TMPDIR)"
 
 .PHONY: podman.msi
-podman.msi: podman-v$(RELEASE_NUMBER).msi  ## Build podman-remote, package for installation on Windows
+podman.msi: test/version/version  ## Build podman-remote, package for installation on Windows
+	$(MAKE) podman-v$(RELEASE_NUMBER).msi
 podman-v$(RELEASE_NUMBER).msi: podman-remote-windows install-podman-remote-windows-docs
 	$(eval DOCFILE := docs/build/remote/windows)
 	find $(DOCFILE) -print | \
 		wixl-heat --var var.ManSourceDir --component-group ManFiles \
 		--directory-ref INSTALLDIR --prefix $(DOCFILE)/ > \
 			$(DOCFILE)/pages.wsx
-	wixl -D VERSION=$(RELEASE_VERSION) -D ManSourceDir=$(DOCFILE) \
+	wixl -D VERSION=$(call err_if_empty,RELEASE_VERSION) -D ManSourceDir=$(DOCFILE) \
 		-o $@ contrib/msi/podman.wxs $(DOCFILE)/pages.wsx
 
 .PHONY: package
@@ -832,6 +834,7 @@ clean: ## Clean all make artifacts
 		build \
 		test/checkseccomp/checkseccomp \
 		test/goecho/goecho \
+		test/version/version \
 		test/__init__.py \
 		test/testdata/redis-image \
 		libpod/container_ffjson.go \
diff --git a/hack/get_release_info.sh b/hack/get_release_info.sh
deleted file mode 100755
index e1020e677..000000000
--- a/hack/get_release_info.sh
+++ /dev/null
@@ -1,70 +0,0 @@
-#!/usr/bin/env bash
-
-# This script produces various bits of metadata needed by Makefile.  Using
-# a script allows uniform behavior across multiple environments and
-# distributions.  The script expects a single argument, as reflected below.
-
-set -euo pipefail
-
-cd "${GOSRC:-$(dirname $0)/../}"
-
-valid_args() {
-    REGEX='^\s+[[:upper:]]+\*[)]'
-    egrep --text --no-filename --group-separator=' ' --only-matching "$REGEX" "$0" | \
-        cut -d '*' -f 1
-}
-
-# `git describe` will never produce a useful version number under all
-# branches.  This is because the podman release process (see `RELEASE_PROCESS.md`)
-# tags release versions only on release-branches (i.e. never on main).
-# Scraping the version number directly from the source, is the only way
-# to reliably obtain the number from all the various contexts supported by
-# the `Makefile`.
-scrape_version() {
-    local v
-    # extract the value of 'var Version'
-    v=$(sed -ne 's/^var\s\+Version\s\+=\s.*("\(.*\)").*/\1/p' <version/version.go)
-    # If it's empty, something has changed in version.go, that would be bad!
-    test -n "$v"
-    # Value consumed literally, must not have any embedded newlines
-    echo -n "$v"
-}
-
-unset OUTPUT
-case "$1" in
-    # Wild-card suffix needed by valid_args() e.g. possible bad grep of "$(echo $FOO)"
-    VERSION*)
-        OUTPUT="${CIRRUS_TAG:-$(scrape_version)}"
-        ;;
-    NUMBER*)
-        OUTPUT="$($0 VERSION | sed 's/-.*//')"
-        ;;
-    DIST_VER*)
-        OUTPUT="$(source /etc/os-release; echo $VERSION_ID | cut -d '.' -f 1)"
-        ;;
-    DIST*)
-        OUTPUT="$(source /etc/os-release; echo $ID)"
-        ;;
-    ARCH*)
-        OUTPUT="${GOARCH:-$(go env GOARCH 2> /dev/null)}"
-        ;;
-    BASENAME*)
-        OUTPUT="podman"
-        ;;
-    REMOTENAME*)
-        OUTPUT="$($0 BASENAME)-remote"
-        ;;
-    *)
-        echo "Error, unknown/unsupported argument '$1', valid arguments:"
-        valid_args
-        exit 1
-        ;;
-esac
-
-if [[ -n "$OUTPUT" ]]
-then
-    echo -n "$OUTPUT"
-else
-    echo "Error, empty output for info: '$1'" > /dev/stderr
-    exit 2
-fi
diff --git a/test/version/main.go b/test/version/main.go
new file mode 100644
index 000000000..2a751de78
--- /dev/null
+++ b/test/version/main.go
@@ -0,0 +1,11 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/containers/podman/v3/version"
+)
+
+func main() {
+	fmt.Printf(version.Version.String())
+}