Fix rake ci:* tasks

Rakefile

@@ -63,26 +63,51 @@ BUILDS
     TOOLCHAINS[toolchain.name] = toolchain
   end
 
+class BuildTask < Struct.new(:name, :target, :build_command)
+  def ruby_cache_key
+    return @key if @key
+    require "open3"
+    cmd = build_command + ["--print-ruby-cache-key"]
+    stdout, status = Open3.capture2(*cmd)
+    unless status.success?
+      raise "Command failed with status (#{status.exitstatus}): #{cmd.join ""}"
+    end
+    require "json"
+    @key = JSON.parse(stdout)
+  end
+
+  def hexdigest
+    ruby_cache_key["hexdigest"]
+  end
+  def artifact
+    ruby_cache_key["artifact"]
+  end
+end
+
 namespace :build do
   BUILD_TASKS =
     BUILDS.map do |src, target, profile|
       name = "#{src}-#{target}-#{profile}"
 
-      desc "Cross-build Ruby for #{@target}"
+      build_command = [
+        "exe/rbwasm",
+        "build",
+        "--ruby-version",
+        src,
+        "--target",
+        target,
+        "--build-profile",
+        profile,
+        "--disable-gems",
+        "-o",
+        "/dev/null"
+      ]
+      desc "Cross-build Ruby for #{target}"
       task name do
-        sh *[
-             "exe/rbwasm",
-             "build",
-             "--ruby-version",
-             src,
-             "--target",
-             target,
-             "--build-profile",
-             profile,
-             "-o",
-             "/dev/null"
-           ]
+        sh *build_command
       end
+
+      BuildTask.new(name, target, build_command)
     end
 
   desc "Clean build directories"

lib/ruby_wasm/build.rb

@@ -51,7 +51,11 @@ def initialize(
     @openssl = RubyWasm::OpenSSLProduct.new(@build_dir, @target, @toolchain)
 
     build_params =
-      RubyWasm::BuildParams.new(options.merge(name: name, target: target))
+      RubyWasm::BuildParams.new(
+        name: name,
+        target: target,
+        default_exts: options[:default_exts]
+      )
 
     @crossruby =
       RubyWasm::CrossRubyProduct.new(

lib/ruby_wasm/build/product/crossruby.rb

@@ -257,7 +257,7 @@ def dest_dir
     end
 
     def artifact
-      File.join(@rubies_dir, "ruby-#{name}.tar.gz")
+      File.join(@rubies_dir, "#{name}.tar.gz")
     end
 
     def extinit_obj

lib/ruby_wasm/cli.rb

@@ -48,7 +48,8 @@ def build(args)
         ruby_version: "3.3",
         target_triplet: "wasm32-unknown-wasi",
         profile: "full",
-        stdlib: true
+        stdlib: true,
+        disable_gems: false
       }
       OptionParser
         .new do |opts|
@@ -90,11 +91,29 @@ def build(args)
           opts.on("--[no-]stdlib", "Include stdlib") do |stdlib|
             options[:stdlib] = stdlib
           end
+
+          opts.on("--disable-gems", "Disable gems") do
+            options[:disable_gems] = true
+          end
+
+          opts.on("--format FORMAT", "Output format") do |format|
+            options[:format] = format
+          end
+
+          opts.on("--print-ruby-cache-key", "Print Ruby cache key") do
+            options[:print_ruby_cache_key] = true
+          end
         end
         .parse!(args)
 
       verbose = RubyWasm.logger.level == :debug
       executor = RubyWasm::BuildExecutor.new(verbose: verbose)
+      packager = self.derive_packager(options)
+
+      if options[:print_ruby_cache_key]
+        self.do_print_ruby_cache_key(packager)
+        exit
+      end
 
       unless options[:output]
         @stderr.puts "Output file is not specified"
@@ -105,11 +124,13 @@ def build(args)
 
       if options[:save_temps]
         tmpdir = Dir.mktmpdir
-        self.do_build(executor, tmpdir, options)
+        self.do_build(executor, tmpdir, packager, options)
         @stderr.puts "Temporary files are saved to #{tmpdir}"
         exit
       else
-        Dir.mktmpdir { |tmpdir| self.do_build(executor, tmpdir, options) }
+        Dir.mktmpdir do |tmpdir|
+          self.do_build(executor, tmpdir, packager, options)
+        end
       end
     end
 
@@ -119,20 +140,39 @@ def build_config(options)
       config = { target: options[:target_triplet], src: options[:ruby_version] }
       case options[:profile]
       when "full"
-        config[:profile] = RubyWasm::Packager::ALL_DEFAULT_EXTS
+        config[:default_exts] = RubyWasm::Packager::ALL_DEFAULT_EXTS
       when "minimal"
-        config[:profile] = ""
+        config[:default_exts] = ""
       else
         RubyWasm.logger.error "Unknown profile: #{options[:profile]} (available: full, minimal)"
         exit 1
       end
+      config[:suffix] = "-#{options[:profile]}"
+      config
+    end
+
+    def derive_packager(options)
+      if defined?(Bundler) && !options[:disable_gems]
+        definition = Bundler.definition
+      end
+      RubyWasm::Packager.new(build_config(options), definition)
+    end
+
+    def do_print_ruby_cache_key(packager)
+      ruby_core_build = packager.ruby_core_build
+      require "digest"
+      digest = Digest::SHA256.new
+      ruby_core_build.cache_key(digest)
+      hexdigest = digest.hexdigest
+      require "json"
+      @stdout.puts JSON.generate(
+                     hexdigest: hexdigest,
+                     artifact: ruby_core_build.artifact
+                   )
     end
 
-    def do_build(executor, tmp_dir, options)
-      definition = Bundler.definition if defined?(Bundler)
-      packager =
-        RubyWasm::Packager.new(tmp_dir, options[:target_triplet], definition)
-      wasm_bytes = packager.package(executor, options)
+    def do_build(executor, tmpdir, packager, options)
+      wasm_bytes = packager.package(executor, tmpdir, options)
       @stderr.puts "Size: #{SizeFormatter.format(wasm_bytes.size)}"
       case options[:output]
       when "-"

lib/ruby_wasm/packager.rb

@@ -2,25 +2,24 @@
 class RubyWasm::Packager
   # Initializes a new instance of the RubyWasm::Packager class.
   #
-  # @param dest_dir [String] The destination used to construct the filesystem.
   # @param config [Hash] The build config used for building Ruby.
   # @param definition [Bundler::Definition] The Bundler definition.
-  def initialize(dest_dir, config = nil, definition = nil)
-    @dest_dir = dest_dir
+  def initialize(config = nil, definition = nil)
     @definition = definition
     @config = config
   end
 
   # Packages the Ruby code into a Wasm binary. (including extensions)
   #
   # @param executor [RubyWasm::BuildExecutor] The executor for building the Wasm binary.
+  # @param dest_dir [String] The destination used to construct the filesystem.
   # @param options [Hash] The packaging options.
   # @return [Array<Integer>] The bytes of the packaged Wasm binary.
-  def package(executor, options)
-    ruby_core = RubyWasm::Packager::Core.new(self)
+  def package(executor, dest_dir, options)
+    ruby_core = self.ruby_core_build()
     tarball = ruby_core.build(executor, options)
 
-    fs = RubyWasm::Packager::FileSystem.new(@dest_dir, self)
+    fs = RubyWasm::Packager::FileSystem.new(dest_dir, self)
     fs.package_ruby_root(tarball, executor)
 
     ruby_wasm_bin = File.expand_path("bin/ruby", fs.ruby_root)
@@ -40,6 +39,10 @@ def package(executor, options)
     wasm_bytes
   end
 
+  def ruby_core_build
+    @ruby_core_build ||= RubyWasm::Packager::Core.new(self)
+  end
+
   # The list of excluded gems from the Bundler definition.
   EXCLUDED_GEMS = %w[ruby_wasm bundler]
 
@@ -120,8 +123,7 @@ def build_options
       src: "3.3",
       default_exts: ALL_DEFAULT_EXTS
     }
-    override = {}
-    override = @config["build_options"] || {} if @config
+    override = @config || {}
     # Merge the default options with the config options
     default.merge(override)
   end

lib/ruby_wasm/packager/core.rb

@@ -1,3 +1,5 @@
+require "forwardable"
+
 class RubyWasm::Packager::Core
   def initialize(packager)
     @packager = packager
@@ -8,6 +10,10 @@ def build(executor, options)
     strategy.build(executor, options)
   end
 
+  extend Forwardable
+
+  def_delegators :build_strategy, :cache_key, :artifact
+
   private
 
   def build_strategy
@@ -44,13 +50,42 @@ def specs_with_extensions
         [spec, exts]
       end
     end
+
+    def cache_key(digest)
+      raise NotImplementedError
+    end
+
+    def artifact
+      raise NotImplementedError
+    end
   end
 
   class DynamicLinking < BuildStrategy
   end
 
   class StaticLinking < BuildStrategy
     def build(executor, options)
+      build = derive_build
+      if defined?(Bundler)
+        Bundler.with_unbundled_env do
+          build.crossruby.build(executor, remake: options[:remake])
+        end
+      else
+        build.crossruby.build(executor, remake: options[:remake])
+      end
+      build.crossruby.artifact
+    end
+
+    def cache_key(digest)
+      derive_build.cache_key(digest)
+    end
+
+    def artifact
+      derive_build.crossruby.artifact
+    end
+
+    def derive_build
+      return @build if @build
       @build ||= RubyWasm::Build.new(name, **@packager.full_build_options)
       @build.crossruby.user_exts = user_exts
       @build.crossruby.debugflags = %w[-g]
@@ -63,14 +98,7 @@ def build(executor, options)
         -Xlinker
         stack-size=16777216
       ]
-      if defined?(Bundler)
-        Bundler.with_unbundled_env do
-          @build.crossruby.build(executor, remake: options[:remake])
-        end
-      else
-        @build.crossruby.build(executor, remake: options[:remake])
-      end
-      @build.crossruby.artifact
+      @build
     end
 
     def user_exts
@@ -94,7 +122,7 @@ def name
       options = @packager.full_build_options
       src_channel = options[:src][:name]
       target_triplet = options[:target]
-      base = "ruby-#{src_channel}-static-#{target_triplet}"
+      base = "ruby-#{src_channel}-#{target_triplet}#{options[:suffix]}"
       exts = specs_with_extensions.sort
       hash = ::Digest::MD5.new
       specs_with_extensions.each { |spec, _| hash << spec.full_name }

lib/ruby_wasm/packager/file_system.rb

@@ -83,8 +83,13 @@ def remove_non_runtime_files(executor)
     end
   end
 
-  def bundle_dir = File.join(@dest_dir, bundle_relative_path)
-  def ruby_root = @ruby_root
+  def bundle_dir
+    File.join(@dest_dir, bundle_relative_path)
+  end
+
+  def ruby_root
+    @ruby_root
+  end
 
   private
 

tasks/ci.rake

@@ -54,11 +54,8 @@ def rake_task_matrix
       {
         task: "build:#{build.name}",
         artifact:
-          Pathname
-            .new(build.crossruby.artifact)
-            .relative_path_from(LIB_ROOT)
-            .to_s,
-        artifact_name: File.basename(build.crossruby.artifact, ".tar.gz"),
+          Pathname.new(build.artifact).relative_path_from(LIB_ROOT).to_s,
+        artifact_name: File.basename(build.artifact, ".tar.gz"),
         builder: build.target,
         rubies_cache_key: ruby_cache_keys[build.name]
       }

tasks/gem.rake

@@ -7,6 +7,9 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList["test/**/test_*.rb"]
 end
 
-require "rb_sys/extensiontask"
+begin
+  require "rb_sys/extensiontask"
 
-RbSys::ExtensionTask.new("ruby_wasm") { |ext| ext.lib_dir = "lib/ruby_wasm" }
+  RbSys::ExtensionTask.new("ruby_wasm") { |ext| ext.lib_dir = "lib/ruby_wasm" }
+rescue LoadError
+end