Use mrubymix to process Ruby source code

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "modules/emscripten"]
 	path = modules/emscripten
 	url = git://github.com/kripken/emscripten.git
+[submodule "modules/mrubymix"]
+	path = modules/mrubymix
+	url = git://github.com/xxuejie/mrubymix.git

Rakefile

@@ -21,6 +21,8 @@ LIBMRUBY_FILE = File.join(MRUBY_DIR, LIBMRUBY)
 MRBTEST = File.join(%w[build emscripten test mrbtest])
 MRBTEST_FILE = File.join(MRUBY_DIR, MRBTEST)
 
+MRUBYMIX = File.join(BASE_DIR, %w[modules mrubymix bin mrubymix])
+
 # Specify supported loading modes of webruby, see rakelib/functions.rb file
 # for details, by default all 3 loading modes are supported
 LOADING_MODE = ENV['LOADING_MODE'] || 2

app/app.rake

@@ -17,11 +17,5 @@ file "#{BUILD_DIR}/rbcode.c" => ["#{BUILD_DIR}/rbcode.rb", "#{MRBC}"] do |t|
 end
 
 file "#{BUILD_DIR}/rbcode.rb" => app_files do |t|
-  # Puts the entrypoint file at the end of the list
-  if (i = app_files.index(ENTRYPOINT_FILE))
-    last_i = app_files.length - 1
-    app_files[i], app_files[last_i] = app_files[last_i], app_files[i]
-  end
-
-  sh "cat #{app_files.join(' ')} > #{BUILD_DIR}/rbcode.rb"
+  sh "ruby #{MRUBYMIX} #{ENTRYPOINT_FILE} #{BUILD_DIR}/rbcode.rb"
 end