我正在尝试在我的机器上安装DataMapper的dm-types
gem install dm-types
我从RubyInstaller(1.9.3)安装了Ruby,我也安装了DevKit.(以及其他一些宝石,如sinatra,haml,dm-core和bcrypt-ruby).
但是,当我运行"gem install dm-types"时,会发生这种情况.
C:\Users\Lev>gem install dm-types
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing dm-types:
ERROR: Failed to build gem native extension.
"C:/Program Files (x86)/Ruby/Ruby193/bin/ruby.exe" extconf.rb
creating Makefile
make
Makefile:172: warning: overriding commands for target `C:/Program'
Makefile:163: warning: ignoring old commands for target `C:/Program'
Makefile:172: warning: overriding commands for target `Files'
Makefile:163: warning: ignoring old commands for target `Files'
Makefile:215: *** multiple target patterns. Stop.
Gem …