update Rakefile with modified mruby-cli itself

Author: tagomoris

Rakefile

@@ -16,7 +16,6 @@ mruby_config=File.expand_path(ENV["MRUBY_CONFIG"] || "build_config.rb")
 ENV['MRUBY_ROOT'] = mruby_root
 ENV['MRUBY_CONFIG'] = mruby_config
 Rake::Task[:mruby].invoke unless Dir.exist?(mruby_root)
-Dir.chdir(mruby_root)
 load "#{mruby_root}/Rakefile"
 
 load File.join(File.expand_path(File.dirname(__FILE__)), "mrbgem.rake")
@@ -25,27 +24,31 @@ current_gem = MRuby::Gem.current
 app_version = MRuby::Gem.current.version
 APP_VERSION = (app_version.nil? || app_version.empty?) ? "unknown" : app_version
 
-desc "compile all the binaries"
+desc "compile binary"
 task :compile => [:all] do
-  MRuby.each_target do |target|
-    `#{target.cc.command} --version`
-    abort("Command #{target.cc.command} for #{target.name} is missing.") unless $?.success?
-  end
-  %W(#{mruby_root}/build/x86_64-pc-linux-gnu/bin/#{APP_NAME} #{mruby_root}/build/i686-pc-linux-gnu/#{APP_NAME}").each do |bin|
-    sh "strip --strip-unneeded #{bin}" if File.exist?(bin)
+  Dir.chdir(mruby_root) do
+    MRuby.each_target do |target|
+      `#{target.cc.command} --version`
+      abort("Command #{target.cc.command} for #{target.name} is missing.") unless $?.success?
+    end
+    %W(#{mruby_root}/build/x86_64-pc-linux-gnu/bin/#{APP_NAME} #{mruby_root}/build/i686-pc-linux-gnu/#{APP_NAME}).each do |bin|
+      sh "strip --strip-unneeded #{bin}" if File.exist?(bin)
+    end
   end
 end
 
 namespace :test do
   desc "run mruby & unit tests"
   # only build mtest for host
   task :mtest => :compile do
-    # in order to get mruby/test/t/synatx.rb __FILE__ to pass,
-    # we need to make sure the tests are built relative from mruby_root
-    MRuby.each_target do |target|
-      # only run unit tests here
-      target.enable_bintest = false
-      run_test if target.test_enabled?
+    Dir.chdir(mruby_root) do
+      # in order to get mruby/test/t/synatx.rb __FILE__ to pass,
+      # we need to make sure the tests are built relative from mruby_root
+      MRuby.each_target do |target|
+        # only run unit tests here
+        target.enable_bintest = false
+        run_test if target.test_enabled?
+      end
     end
   end
 
@@ -63,21 +66,25 @@ namespace :test do
 
   desc "run integration tests"
   task :bintest => :compile do
-    MRuby.each_target do |target|
-      clean_env(%w(MRUBY_ROOT MRUBY_CONFIG)) do
-        run_bintest if target.bintest_enabled?
+    Dir.chdir(mruby_root) do
+      MRuby.each_target do |target|
+        clean_env(%w(MRUBY_ROOT MRUBY_CONFIG)) do
+          run_bintest if target.bintest_enabled?
+        end
       end
     end
   end
 end
 
 desc "run all tests"
 Rake::Task['test'].clear
-task :test => ['test:bintest', 'test:mtest']
+task :test => ["test:mtest", "test:bintest"]
 
 desc "cleanup"
 task :clean do
-  sh "rake deep_clean"
+  Dir.chdir(mruby_root) do
+    sh "rake deep_clean"
+  end
 end
 
 desc "generate a release tarball"
@@ -133,8 +140,7 @@ Rake.application.tasks.each do |task|
     old_task = Rake.application.instance_variable_get('@tasks').delete(task.name)
     desc old_task.full_comment
     task old_task.name => old_task.prerequisites do
-      abort("Not running in docker, you should type \"docker-compose run <task>\".") \
-        unless is_in_a_docker_container?
+      abort("Not running in docker, you should type \"docker-compose run <task>\".")         unless is_in_a_docker_container?
       old_task.invoke
     end
   end