我正在尝试在我的本地机器上运行一个项目。我已经在我的Mac OS系统上安装了Ruby和Rails。它正常工作。我可以创建一个新的项目并且可以正常运行，没有任何错误，但是当我尝试运行现有的项目时，它说我们必须执行bundle install命令。当我运行该命令时，我会得到以下错误：
"An error occurred while installing rmagick (2.13.2), and Bundler cannot continue.
Make sure that `gem install rmagick -v '2.13.2'` succeeds before bundling."
当我运行命令
gem install rmagick -v '2.13.2' 时，它会返回以下错误信息：ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc-4.2... yes
checking for Magick-config... no
Can't install RMagick 2.13.2. Can't find Magick-config in /usr/local/rvm/gems/ruby-1.9.3-p392/bin:/usr/local/rvm/gems/ruby-1.9.3-p392@global/bin:/usr/local/rvm/rubies/ruby-1.9.3-p392/bin:/usr/local/rvm/gems/ruby-1.9.3-p392/bin:/usr/local/rvm/gems/ruby-1.9.3-p392@global/bin:/usr/local/rvm/rubies/ruby-1.9.3-p392/bin:/usr/local/rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/sm/bin:/opt/sm/pkg/active/bin:/opt/sm/pkg/active/sbin
*** 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=/usr/local/rvm/rubies/ruby-1.9.3-p392/bin/ruby
Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p392/gems/rmagick-2.13.2 for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p392/gems/rmagick-2.13.2/ext/RMagick/gem_make.out
我已经搜索了，但没有在任何地方找到答案。