repair build failure introduced by refactoring

Author: kateinoigakukun

Rakefile

@@ -57,6 +57,7 @@ namespace :build do
     options = params
         .merge(BUILD_PROFILES[params[:profile]])
         .merge(name: name, src: source, extensions: user_exts, toolchain: toolchain)
+    options.delete :profile
     RubyWasm::BuildTask.new(name, **options)
   end
 end

lib/ruby_wasm/build_system/product/crossruby.rb

@@ -10,7 +10,7 @@ def initialize(srcdir, toolchain, name: nil)
     end
 
     def product_build_dir(crossruby)
-      File.join(crossruby.ext_build_dir, lib)
+      File.join(crossruby.ext_build_dir, @name)
     end
 
     def linklist(crossruby)