reloc: add support relocatable package

To align build system with scylla main repo, adding relocatable package
support.

On scylla-jmx, we don't provide libraries and linker since it's Java
program, just contains .jar file and dist/ directory.

install-dependencies.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+#
+# This file is open source software, licensed to you under the terms
+# of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+# distributed with this work for additional information regarding copyright
+# ownership.  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.
+#
+
+. /etc/os-release
+
+if [ "$ID" = "ubuntu" ] || [ "$ID" = "debian" ]; then
+    apt -y install maven openjdk-8-jdk-headless
+elif [ "$ID" = "fedora" ] || [ "$ID" = "centos" ]; then
+    yum install -y maven java-1.8.0-openjdk-devel
+fi

reloc/build_reloc.sh

@@ -0,0 +1,57 @@
+#!/bin/bash -e
+
+. /etc/os-release
+
+print_usage() {
+    echo "build_reloc.sh --clean --nodeps"
+    echo "  --clean clean build directory"
+    echo "  --nodeps    skip installing dependencies"
+    exit 1
+}
+
+CLEAN=
+NODEPS=
+while [ $# -gt 0 ]; do
+    case "$1" in
+        "--clean")
+            CLEAN=yes
+            shift 1
+            ;;
+        "--nodeps")
+            NODEPS=yes
+            shift 1
+            ;;
+        *)
+            print_usage
+            ;;
+    esac
+done
+
+is_redhat_variant() {
+    [ -f /etc/redhat-release ]
+}
+is_debian_variant() {
+    [ -f /etc/debian_version ]
+}
+
+
+if [ ! -e reloc/build_reloc.sh ]; then
+    echo "run build_reloc.sh in top of scylla dir"
+    exit 1
+fi
+
+if [ "$CLEAN" = "yes" ]; then
+    rm -rf build target
+fi
+
+if [ -f build/scylla-jmx-package.tar.gz ]; then
+    rm build/scylla-jmx-package.tar.gz
+fi
+
+if [ -z "$NODEPS" ]; then
+    sudo ./install-dependencies.sh
+fi
+
+mvn -B install
+./SCYLLA-VERSION-GEN
+scripts/create-relocatable-package.py build/scylla-jmx-package.tar.gz

scripts/create-relocatable-package.py

@@ -0,0 +1,48 @@
+#!/usr/bin/python3
+
+#
+# Copyright (C) 2018 ScyllaDB
+#
+
+#
+# This file is part of Scylla.
+#
+# Scylla is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Scylla is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Scylla.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import argparse
+import io
+import os
+import tarfile
+import pathlib
+
+
+ap = argparse.ArgumentParser(description='Create a relocatable scylla package.')
+ap.add_argument('dest',
+                help='Destination file (tar format)')
+
+args = ap.parse_args()
+
+output = args.dest
+
+ar = tarfile.open(output, mode='w|gz')
+pathlib.Path('build/SCYLLA-RELOCATABLE-FILE').touch()
+ar.add('build/SCYLLA-RELOCATABLE-FILE', arcname='SCYLLA-RELOCATABLE-FILE')
+ar.add('build/SCYLLA-RELEASE-FILE', arcname='SCYLLA-RELEASE-FILE')
+ar.add('build/SCYLLA-VERSION-FILE', arcname='SCYLLA-VERSION-FILE')
+ar.add('dist')
+ar.add('target/scylla-jmx-1.0.jar', arcname='scylla-jmx-1.0.jar')
+ar.add('scripts/scylla-jmx', arcname='scylla-jmx')
+ar.add('README.md')
+ar.add('NOTICE')