安装迷你赛车(0.2.0)时出错

我使用的是mac 10.14。我对迷你赛车宝石有些意见。在运行bundle安装后,出现以下错误。我不知道该怎么解决这个问题。

错误

Installing mini_racer 0.2.0 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/Users/vipinkumar/.rvm/gems/ruby-2.5.1@ry_rails5/gems/mini_racer-0.2.0/ext/mini_racer_extension
/Users/vipinkumar/.rvm/rubies/ruby-2.5.1/bin/ruby -r
./siteconf20180911-791-fpmt3t.rb extconf.rb
checking for -lpthread... yes
checking for -lobjc... yes
creating Makefile

current directory:
/Users/vipinkumar/.rvm/gems/ruby-2.5.1@ry_rails5/gems/mini_racer-0.2.0/ext/mini_racer_extension
make "DESTDIR=" clean

current directory:
/Users/vipinkumar/.rvm/gems/ruby-2.5.1@ry_rails5/gems/mini_racer-0.2.0/ext/mini_racer_extension
make "DESTDIR="
compiling mini_racer_extension.cc
clang: warning: argument unused during compilation: '-rdynamic'
[-Wunused-command-line-argument]
In file included from mini_racer_extension.cc:2:
In file included from
/Users/vipinkumar/.rvm/rubies/ruby-2.5.1/include/ruby-2.5.0/ruby.h:33:
In file included from
/Users/vipinkumar/.rvm/rubies/ruby-2.5.1/include/ruby-2.5.0/ruby/ruby.h:2040:
/Users/vipinkumar/.rvm/rubies/ruby-2.5.1/include/ruby-2.5.0/ruby/intern.h:47:19:
warning: 'register' storage class specifier is deprecated and incompatible with
C++17 [-Wdeprecated-register]
void rb_mem_clear(register VALUE*, register long);
                  ^~~~~~~~~
/Users/vipinkumar/.rvm/rubies/ruby-2.5.1/include/ruby-2.5.0/ruby/intern.h:47:36:
warning: 'register' storage class specifier is deprecated and incompatible with
C++17 [-Wdeprecated-register]
void rb_mem_clear(register VALUE*, register long);
                                   ^~~~~~~~~
2 warnings generated.
linking shared-object mini_racer_extension.bundle
clang: warning: libstdc++ is deprecated; move to libc++ [-Wdeprecated]
ld: library not found for -lstdc++
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mini_racer_extension.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in
/Users/vipinkumar/.rvm/gems/ruby-2.5.1@ry_rails5/gems/mini_racer-0.2.0 for
inspection.
Results logged to
/Users/vipinkumar/.rvm/gems/ruby-2.5.1@ry_rails5/extensions/x86_64-darwin-18/2.5.0/mini_racer-0.2.0/gem_make.out

An error occurred while installing mini_racer (0.2.0), and Bundler
cannot continue.
Make sure that `gem install mini_racer -v '0.2.0' --source
'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  mini_racer

Ruby版本2.5.0或2.5.1和rails 5.0

gem 'mini_racer', platforms: :ruby