我在 Windows 机器上安装时遇到了 rmagic gem 的问题，它适用于 Rails 3 应用程序.. ruby 版本 1.8.7
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Using rake (0.8.7)
Using abstract (1.0.0)
Using activesupport (3.0.1)
Using builder (2.1.2)
Using i18n (0.4.2)
Using activemodel (3.0.1)
Using erubis (2.6.6)
Using rack (1.2.1)
Using rack-mount (0.6.13)
Using rack-test (0.5.6)
Using tzinfo (0.3.23)
Using actionpack (3.0.1)
Using mime-types (1.16)
Using polyglot (0.3.1)
Using treetop (1.4.8)
Using mail (2.2.9)
Using actionmailer (3.0.1)
Using arel (1.0.1)
Using activerecord (3.0.1)
Using activeresource (3.0.1)
Using bundler (1.0.7)
Using gdata (1.1.1)
Using json (1.4.6)
Using contacts (1.2.4)
Using fastercsv (1.5.3)
Using hpricot (0.8.3)
Using mysql (2.8.1)
Using packet (0.1.15)
Using thor (0.14.4)
Using railties (3.0.1)
Using rails (3.0.1)
Installing rmagick (2.12.0) Temporarily enhancing PATH to include DevKit with native extensions
C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/installer.rb:4 83:in
`build_extensions': ERROR: Failed to build gem native extension.
(Gem::Ins taller::ExtensionBuildError)
C:/Ruby187/bin/ruby.exe extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... no
Can't install RMagick 2.12.0. Can't find MagickWand.h.
*** 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:/Ruby187/bin/ruby
Gem files will remain installed in C:/Ruby187/lib/ruby/gems/1.8/gems/rmagick-2.12.0 for inspection.
Results logged to C:/Ruby187/lib/ruby/gems/1.8/gems/rmagick-2.12.0/ext/RMagick/gem_make.out
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in `each'
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/installer.rb:446:in `build_extensions'
from C:/Ruby187/lib/ruby/site_ruby/1.8/rubygems/installer.rb:198:in `install'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/source.rb:95:in `install'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:55:in `run'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/spec_set.rb:12:in `each'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:44:in `run'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/installer.rb:8:in `install'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/cli.rb:225:in `install'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `send'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/task.rb:22:in `run'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor.rb:246:in `dispatch'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/vendor/thor/base.rb:389:in `start'
from C:/Ruby187/lib/ruby/gems/1.8/gems/bundler-1.0.7/bin/bundle:13
from C:/Ruby187/bin/bundle:19:in `load'
from C:/Ruby187/bin/bundle:19