我执行捆绑安装时遇到kgio gem的宝石安装错误

Question

我将独角兽添加到我的Gemfile中，然后在执行捆绑安装时收到此错误

    em::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb 
checking for CLOCK_MONOTONIC in time.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
    --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/adim86/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
/Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:491:in `block in try_compile'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:443:in `with_werror'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:491:in `try_compile'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:686:in `macro_defined?'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:822:in `block in have_macro'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'
    from /Users/adim86/.rvm/rubies/ruby-1.9.3-p0/lib/ruby/1.9.1/mkmf.rb:821:in `have_macro'
    from extconf.rb:5:in `<main>'


Gem files will remain installed in /Users/adim86/.rvm/gems/ruby-1.9.3-p0/gems/kgio-2.7.4 for inspection.
Results logged to /Users/adim86/.rvm/gems/ruby-1.9.3-p0/gems/kgio-2.7.4/ext/kgio/gem_make.out
An error occured while installing kgio (2.7.4), and Bundler cannot continue.
Make sure that `gem install kgio -v '2.7.4'` succeeds before bundling

我的gem文件看起来像这样。 我曾尝试将独角兽添加到生产块中，但仍然出现相同的错误。 我也删除了独角兽，但仍然遇到相同的错误，也尝试了更新捆绑包，但无济于事：

source 'https://rubygems.org'

gem 'rails', '3.2.3'

gem 'devise'
gem 'haml-rails'

gem 'omniauth'
gem 'omniauth-twitter'
gem 'omniauth-facebook'
gem 'twitter'
gem 'fb_graph'

gem 'json'
gem 'json_pure'

gem 'simple_form'
gem 'postmark'
gem 'postmark-rails'

gem 'bootstrap-datepicker-rails'
gem 'watu_table_builder', :require => 'table_builder'

gem 'sqlite3'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'uglifier', '>= 1.0.3'
end

gem "therubyracer", :require => 'v8'

gem 'jquery-rails'

gem 'differ'


gem 'whenever'
gem 'unicorn'

有人可以帮忙吗？

Answer 1

Unicorn旨在利用类似Unix的系统中的功能。

换句话说，它们在Windows上将无法使用

Answer 2

问题是Xcode。 转到Xcode设置->下载，并确保已安装“命令行工具”。 一旦我安装了它们， bundle install就可以了。

Answer 3

我最近有这个问题。 就我而言，这是因为出于某种未知的原因，未设置CC（它是Apple的LLVM编译器的填充程序）的环境变量。 输入：

$ export CC=cc

在终端中进行bundle install之前对我有用。

要使更改永久生效，可以将export CC=cc添加到.bash_profile文件中。

如果选择后者，请确保键入：

$ source ~/.bash_profile 

（或打开新的终端窗口）进行bundle install之前。

Answer 4

这可能需要更新的红宝石补丁p194 -如p194安装它：

rvm install 1.9.3-p194

然后再试一次。

您应该始终使用最新的可用补丁程序级别，RVM可以通过以下方式做到这一点：

rvm get stable
rvm use 1.9.3 --install

Answer 5

我使用rvm use system安装了gem。 生活在红宝石边缘的价格？