Use wasi-virt for componentized binaries

Author: kateinoigakukun

lib/ruby_wasm/packager.rb

@@ -44,7 +44,7 @@ def package(executor, dest_dir, options)
       fs.remove_stdlib(executor)
     end
 
-    if full_build_options[:target] == "wasm32-unknown-wasip1" && !features.support_dynamic_linking?
+    if full_build_options[:target] == "wasm32-unknown-wasip1" && !features.support_component_model?
       # wasi-vfs supports only WASI target
       wasi_vfs = RubyWasmExt::WasiVfs.new
       wasi_vfs.map_dir("/bundle", fs.bundle_dir)
@@ -54,6 +54,27 @@ def package(executor, dest_dir, options)
     end
     wasm_bytes = ruby_core.link_gem_exts(executor, fs.ruby_root, fs.bundle_dir, wasm_bytes)
 
+    if features.support_component_model?
+      tmp_file = "tmp/ruby.component.wasm"
+      tmp_virt_file = "tmp/ruby.component.virt.wasm"
+      File.write(tmp_file, wasm_bytes)
+      args = [
+        "wasi-virt", "--stderr=allow",
+        "--allow-random", "--allow-clocks", "--allow-exit",
+        "--stdout=allow", "--stdin=allow",
+        "--allow-all",
+        "--debug"
+      ]
+      [["/bundle", fs.bundle_dir], ["/usr", File.dirname(fs.ruby_root)]].each do |guest, host|
+        args += ["--mount", "#{guest}=#{host}"]
+      end
+      args += ["--out", tmp_virt_file]
+      args += [tmp_file]
+
+      executor.system(*args)
+      wasm_bytes = File.binread(tmp_virt_file)
+    end
+
     wasm_bytes = RubyWasmExt.preinitialize(wasm_bytes) if options[:optimize]
     wasm_bytes
   end

lib/ruby_wasm/packager/core.rb

@@ -306,6 +306,7 @@ def derive_build
       return @build if @build
       __skip__ = build ||= RubyWasm::Build.new(
         name, **@packager.full_build_options, target: target,
+        wasi_vfs: nil
       )
       build.crossruby.user_exts = user_exts(build)
       # Emscripten uses --global-base=1024 by default, but it conflicts with