Add automated release script from mtd-utils

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

configure.ac

@@ -1,6 +1,8 @@
 AC_PREREQ([2.60])
 
-AC_INIT([init], 0.2, [david.oberhollenzer@tele2.at], init)
+m4_define([RELEASE], 0.2)
+
+AC_INIT([init], [RELEASE], [david.oberhollenzer@tele2.at], init)
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([foreign subdir-objects dist-xz])
 AM_SILENT_RULES([yes])

make_a_release.sh

@@ -0,0 +1,59 @@
+#!/bin/sh -uef
+
+# A small helper script taken from mtd-utils to generate a release tar ball.
+
+fatal() {
+	printf "Error: %s\n" "$1" >&2
+	exit 1
+}
+
+usage() {
+	cat <<EOF
+Usage: ${0##*/} <new_ver> <outdir>
+
+<new_ver>  - mtd utils version to create in X.Y[.Z[-rcX]] format
+<outdir>   - the output directory where to store the tarball
+EOF
+	exit 0
+}
+
+[ $# -eq 0 ] && usage
+[ $# -eq 2 ] || fatal "Insufficient or too many argumetns"
+
+new_ver="$1"
+outdir="$2"
+
+release_name="init-$new_ver"
+tag_name="v$new_ver"
+
+# Make sure the input is sane and the makefile contains sensible version
+VER_REGEX="[0-9]\+.[0-9]\+\(.[0-9]\+\)\?\(-rc[0-9]\+\)\?"
+
+echo "$new_ver" | grep -q -x "$VER_REGEX" ||
+        fatal "please, provide new version in X.Y[.Z][-rcX] format"
+
+grep -q -x "m4_define(\[RELEASE\], $VER_REGEX)" configure.ac ||
+        fatal "configure.ac does not contain a valid version string"
+
+# Make sure the git index is up-to-date
+[ -z "$(git status --porcelain)" ] || fatal "Git index is not up-to-date"
+
+# Make sure the tag does not exist
+[ -z "$(git tag -l "$tag_name")" ] || fatal "Tag $tag_name already exists"
+
+# Change the version in the configure.ac
+sed -i -e "s/^m4_define(\[RELEASE\], $VER_REGEX)/m4_define([RELEASE], $new_ver)/" configure.ac
+
+# And commit the change
+git commit -m "Release $release_name" configure.ac
+
+# Create new tag
+echo "Signing tag $tag_name"
+git tag -m "$release_name" "$tag_name"
+
+# Prepare tarball
+./autogen.sh
+./configure
+make distcheck
+mkdir -p "$outdir"
+mv "$release_name.tar.xz" "$outdir"