build-system: add missing binaryen dependency in npm packaging task

Author: kateinoigakukun

lib/ruby_wasm/build_system/toolchain.rb

@@ -111,6 +111,10 @@ def install_task
       @task
     end
 
+    def binaryen_install_task
+      @binaryen_install_task
+    end
+
     def download_url(version_major, version_minor)
       version = "#{version_major}.#{version_minor}"
       assets = [
@@ -176,7 +180,11 @@ def fetch_task
             mkdir_p @binaryen_path
             sh "tar -C #{@binaryen_path} --strip-component 1 -xzf #{binaryen_tarball}"
           end
+        @binaryen_install_task ||= task "binaryen:install" => [binaryen]
         required << binaryen
+      else
+        # no-op when already available
+        @binaryen_install_task ||= task "binaryen:install"
       end
       multitask "wasi-sdk:install" => required
     end

tasks/packaging.rake

@@ -11,16 +11,17 @@ WAPM_PACKAGES = [
 namespace :npm do
   wasi_vfs = RubyWasm::WasiVfsProduct.new("build")
   wasi_vfs.define_task
+  wasi_sdk = TOOLCHAINS["wasi-sdk"]
   tools = {
     "WASI_VFS_CLI" => wasi_vfs.cli_bin_path,
-    "WASMOPT" => TOOLCHAINS["wasi-sdk"].wasm_opt,
+    "WASMOPT" => wasi_sdk.wasm_opt,
   }
   NPM_PACKAGES.each do |pkg|
     base_dir = Dir.pwd
     pkg_dir = "#{Dir.pwd}/packages/npm-packages/#{pkg[:name]}"
 
     desc "Build npm package #{pkg[:name]}"
-    task pkg[:name] => ["build:#{pkg[:build]}", wasi_vfs.cli_install_task] do
+    task pkg[:name] => ["build:#{pkg[:build]}", wasi_vfs.cli_install_task, wasi_sdk.binaryen_install_task] do
       sh "npm ci", chdir: pkg_dir
       sh tools, "#{pkg_dir}/build-package.sh #{base_dir}/rubies/#{pkg[:build]}"
       sh "npm pack", chdir: pkg_dir