/Users/junichi/work/cordova/cmdtest/platforms/ios/CmdTest/Plugins/com.example.hello/HelloMrubyPlugin/mruby/value.h:122:10: error:
      '../mruby/object.h' file not found with <angled> include; use "quotes" instead
#include <../mruby/object.h>
         ^~~~~~~~~~~~~~~~~~~
         "../mruby/object.h"