Rmagick无法继续。我无法在Windows上使用这个宝石

Question

我是初学者rails开发者。我正在尝试安装Rmagick，但我收到了这些错误。在Windows上。

使用原生扩展安装rmagick 2.15.4

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4/ext/RMagick
C:/Ruby22-x64/bin/ruby.exe -r ./siteconf20160709-7156-1eqm5da.rb extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=C:/Ruby22-x64/bin/$(RUBY_BASE_NAME)
extconf.rb:110:in ``': No such file or directory - identify -version (Errno::ENOENT)
        from extconf.rb:110:in `configure_compile_options'
        from extconf.rb:16:in `initialize'
        from extconf.rb:517:in `new'
        from extconf.rb:517:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rmagick-2.15.4 for inspection.
Results logged to C:/Ruby22-x64/lib/ruby/gems/2.2.0/extensions/x64-mingw32/2.2.0/rmagick-2.15.4/gem_make.out
Using sqlite3 1.3.11
Using turbolinks-source 5.0.0
Using rdoc 4.2.2
Using tzinfo 1.2.2
Using nokogiri 1.6.8
Using rack-test 0.6.3
Using warden 1.2.6
Using mime-types 3.1
Using autoprefixer-rails 6.3.6.2
Using uglifier 3.0.0
Using binding_of_caller 0.7.2
Using coffee-script 2.4.1
Using sprockets 3.6.2
Using haml 4.0.7
An error occurred while installing rmagick (2.15.4), and Bundler cannot
continue.
Make sure that `gem install rmagick -v '2.15.4'` succeeds before bundling.

如果您发送了问题，我已经安装了imagemagick，我点击了添加路径选项。我该怎么办？