Add a script to build releases.

Author: divverent

Makefile

@@ -142,7 +142,7 @@ $(LICENSES_THIRD_PARTY):
 	GO="$(GO)" GOOS= GOARCH= scripts/collect-licenses.sh $(PACKAGE) $(LICENSES_THIRD_PARTY)
 
 # Building of release zip files starts here.
-ZIPFILE = aaaaxy-$(shell scripts/version.sh gittag).zip
+ZIPFILE = aaaaxy.zip
 
 .PHONY: addextras
 addextras: $(EXTRAFILES)

scripts/binary-release.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -ex
+
+prev=$(git describe --always --long)
+prev=${prev%-*-g*}
+
+new=$(sh scripts/version.sh gittag)
+
+echo "Releaseing: $prev -> $new."
+
+make allrelease
+mv aaaaxy.zip "aaaaxy-$new.zip"
+
+git tag -a "$new" -m "$(
+	echo "Release $new."
+	echo
+	echo "Changes since $prev:"
+	git log --format='%w(72,2,4)- %s' "$prev"..
+)" -e
+
+echo "Now run:"
+echo "  git push tag $new"
+echo "Then upload aaaaxy-$new.zip"