Create release workflow

.github/workflows/release.yml

@@ -0,0 +1,57 @@
+name: Release
+
+on:
+  workflow_dispatch:
+  push:
+    tags: [ "v*.*.*" ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  ci-data:
+    runs-on: ubuntu-latest
+    name: CI Data
+    outputs:
+      result: ${{ steps.fetch.outputs.result }}
+    steps:
+      - name: Fetch CI Data
+        uses: oxidize-rb/actions/fetch-ci-data@v1
+        id: fetch
+        with:
+          supported-ruby-platforms: |
+            exclude: []
+          stable-ruby-versions: |
+            exclude: [head]
+  cross-gem:
+    name: Compile native gem for ${{ matrix.platform }}
+    runs-on: ubuntu-latest
+    needs: ci-data
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: ${{ fromJSON(needs.ci-data.outputs.result).supported-ruby-platforms }}
+        ruby:
+          - "2.7.8"
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+          rubygems: "3.4.14"
+
+      - uses: oxidize-rb/actions/cross-gem@v1
+        id: cross-gem
+        with:
+          platform: ${{ matrix.platform }}
+          ruby-versions: ${{ join(fromJSON(needs.ci-data.outputs.result).stable-ruby-versions, ',') }}
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: cross-gem-${{ matrix.ruby-platform }}
+          path: ${{ steps.cross-gem.outputs.gem-path }}
+          if-no-files-found: error
+          retention-days: 1

Rakefile

@@ -19,6 +19,7 @@ gemspec = Gem::Specification.load("xml2json.gemspec")
 
 RbSys::ExtensionTask.new("xml2json", gemspec) do |ext|
   ext.lib_dir = "lib/xml2json"
+  ext.cross_compile = true
 end
 
 task :clippy do

lib/xml2json.rb

@@ -1,7 +1,11 @@
 # frozen_string_literal: true
 
 require_relative "xml2json/version"
-require_relative "xml2json/xml2json"
+begin
+  require_relative "xml2json/#{RUBY_VERSION[/(\d+\.\d+)/, 1]}/xml2json"
+rescue LoadError
+  require_relative "xml2json/xml2json"
+end
 
 # @see https://docs.rs/xml2json-rs/1.0.1/xml2json_rs/index.html docs for the wrapped library
 module Xml2Json