Question

我尝试了不同的方法来安装rails但从来没有得到它.. 每次我输入“gem install rails”.. 它显示了我"ERROR: Failed to build gem native extension."

miketeki-iphone:~ Simon$ gem install rails
Failed to load /Users/Simon/.gemrc because it doesn't contain valid YAML hash
Fetching: i18n-0.6.5.gem (100%)
Successfully installed i18n-0.6.5
Fetching: multi_json-1.7.9.gem (100%)
Successfully installed multi_json-1.7.9
Fetching: tzinfo-0.3.37.gem (100%)
Successfully installed tzinfo-0.3.37
Fetching: minitest-4.7.5.gem (100%)
Successfully installed minitest-4.7.5
Fetching: atomic-1.1.13.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing rails:
    ERROR: Failed to build gem native extension.

    /Users/Simon/.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/Simon/.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/Simon/.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/Simon/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:519:in `try_link0'
    from /Users/Simon/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/mkmf.rb:817:in `try_run'
    from extconf.rb:24:in `<main>'

Gem files will remain installed in /Users/Simon/.rvm/gems/ruby-2.0.0-p247@global/gems/atomic-1.1.13 for inspection.
Results logged to /Users/Simon/.rvm/gems/ruby-2.0.0-p247@global/gems/atomic-1.1.13/ext/gem_make.out

提前致谢。

Answer 1

从apple开发人员下载页面下载并安装“命令行工具”：https://developer.apple.com/downloads/或者只需通过App Store安装xcode，然后重试。

正如评论中其他人所提到的，rbenv是一种更好，更简单的方法来管理Mac OS X上的红宝石，所以考虑进行切换。从系统中删除rvm：rvm implode然后重新启动shell以确保在干净的环境中安装rbenv。

有关如何在mac上安装体面的rails dev环境的详细说明，请查看我在博客文章中放在一起的说明：

http://blog.parsalabs.com/blog/2013/08/27/setting-up-a-ruby-on-rails-4-development-environment-on-a-clean-mac-os-x-installation/

他们为我工作，希望你会发现它们也很有用。

Mountain Lion，无法在rails上安装ruby [错误：无法构建gem原生扩展。]

1 个答案: