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我下载了 xcode、命令行工具、home brew、rvm 和 ruby​​，但是当我使用该命令时，sudo gem install rails我收到一条错误消息。不知道该怎么做任何帮助都会很棒，我想在我的新 Mac 上安装 rails。

ERROR:  While executing gem ... (Errno::EACCES)
    Permission denied - /Users/cheatermoves/.rvm/gems/ruby-2.0.0-p247/gems/atomic-1.1.14/test/test_atomic.rb
marshalls-MacBook-Air:~ cheatermoves$ sudo gem install rails
Building native extensions.  This could take a while...
ERROR:  Error installing rails:
    ERROR: Failed to build gem native extension.

    /Users/cheatermoves/.rvm/rubies/ruby-2.0.0-p247/bin/ruby 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=/Users/cheatermoves/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
    --with-atomic_reference-dir
    --without-atomic_reference-dir
    --with-atomic_reference-include
    --without-atomic_reference-include=${atomic_reference-dir}/include
    --with-atomic_reference-lib
    --without-atomic_reference-lib=${atomic_reference-dir}/
/Users/cheatermoves/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /Users/cheatermoves/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:519:in `try_link0'
    from /Users/cheatermoves/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:817:in `try_run'
    from extconf.rb:26:in `<main>'
4

2 回答 2

0 
sudo gcc --version

完成此操作后，请接受 xcode 的用户协议！（这就是为我解决的问题。）

于 2013-11-13T22:52:29.483 回答
0

您可能不想将 sudo 与 RVM 一起使用...尝试：

gem install rails
于 2013-09-29T07:04:16.563 回答