捆绑安装/在rails上安装libv8（3.3.10.4）时出错（在Lion上运行）

Question

我在我的gem文件中添加了gem'sunkpot_rails'并运行了bundle install。 我在安装libv8时遇到错误，错误信息如下：

Installing libv8 (3.3.10.4) with native extensions 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

        /opt/local/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
    --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=/opt/local/bin/ruby
extconf.rb:13: uninitialized constant Gem (NameError)
Checking for Python...

Gem files will remain installed in /Users/sonyakim/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.3.10.4 for inspection.
Results logged to /Users/sonyakim/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.3.10.4/ext/libv8/gem_make.out
An error occured while installing libv8 (3.3.10.4), and Bundler cannot continue.
Make sure that `gem install libv8 -v '3.3.10.4'` succeeds before bundling.

当我运行gem install libv8 -v'3.3.10.4'时，会打印以下错误消息：

Building native extensions.  This could take a while...
ERROR:  Error installing libv8:
    ERROR: Failed to build gem native extension.

        /opt/local/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
    --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=/opt/local/bin/ruby
extconf.rb:13: uninitialized constant Gem (NameError)
Checking for Python...

Gem files will remain installed in /Users/sonyakim/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.3.10.4 for inspection.
Results logged to /Users/sonyakim/.rvm/gems/ruby-1.9.2-p290/gems/libv8-3.3.10.4/ext/libv8/gem_make.out

如何正确安装libv8？

Answer 1

强制extconf.rb文件在安装时需要rubygems：

RUBYOPT=-rrubygems gem install libv8 -v '3.3.10.4'

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