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-rwxr-xr-xmake_a_release.sh59
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diff --git a/make_a_release.sh b/make_a_release.sh
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+#!/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"