ruby-on-rails-3 - Rails : error while installing rubyracer

我在我的linode服务器上运行“捆绑安装”。但无法安装rubyracer的原因。捆绑安装输出为:

Installing therubyracer (0.11.0)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /usr/local/bin/ruby extconf.rb
checking for main() in -lpthread... yes
*** 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=/usr/local/bin/ruby
--with-pthreadlib
--without-pthreadlib
--enable-debug
--disable-debug
/usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.11.0/ext/v8/build.rb:50:in `build_with_rubygem_libv8': undefined local variable or method `libv8_include_flags' for main:Object (NameError)
from extconf.rb:20:in `<main>'


Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.11.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.11.0/ext/v8/gem_make.out

An error occurred while installing therubyracer (0.11.0), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.11.0'` succeeds before bundling.

实际上安装了 gem ruby ，但是版本是0.11.4。我只是不知道为什么它不采用此版本而仅接受0.11.0。

还有如何安装0.11.0。当我运行错误消息“gem install therubyracer -v'0.11.0'”时，它执行失败并给出:

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

    /usr/local/bin/ruby extconf.rb
checking for main() in -lpthread... yes
*** 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=/usr/local/bin/ruby
--with-pthreadlib
--without-pthreadlib
--enable-debug
--disable-debug
/usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.11.0/ext/v8/build.rb:50:in    `build_with_rubygem_libv8': undefined local variable or method `libv8_include_flags' for    main:Object (NameError)
from extconf.rb:20:in `<main>'


Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-    0.11.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/therubyracer-0.11.0/ext/v8/gem_make.out

有人可以帮忙吗？在堆栈和git上搜索了很多，但给定的解决方案均无效。

我的gemfile:

source 'https://rubygems.org'

gem 'rails', '3.2.12'
gem "paperclip"
gem 'mysql2'
gem "devise"
group :assets do
 gem 'sass-rails',   '~> 3.2.3'
 gem 'coffee-rails', '~> 3.2.1'

gem 'uglifier', '>= 1.0.3'
end


gem 'jquery-rails'
gem 'libv8', '3.11.8.4', :platform => :ruby
gem 'therubyracer', '0.11.0', :platforms => :ruby
gem 'rails_admin'
gem 'unicorn'
gem 'delayed_job_active_record'
gem 'daemons'

最佳答案

我在ubuntu上遇到了同样的问题:

经过一些试验，我能够确认命令行上的“gem install therubyracer --pre”可以正常工作，但是告诉捆绑程序使用--pre选项无效:

bundle config build.therubyracer --pre

我不知道这是否是因为gem是通过依赖项而不是通过Gemfile中的显式'gem'行插入的。即使经过广泛的谷歌搜索，我也无法解决此问题，但是由于0.11似乎只有几个小时的历史，所以我决定尝试通过添加以下内容来还原到以前的0.10版本:

gem 'therubyracer', '=0.10'

在使用依赖于它的 gem 之前。这迫使捆绑器选择了较早的版本，并且安装得像个吊饰。希望someone will fix 0.11足够早。

在github上查看therubyracer的问题之后，这似乎与两个不同的问题有关-一个已关闭:https://github.com/cowboyd/therubyracer/issues/213建议首先(或显式)安装libv8 gem，并导致另一个错误:https://github.com/cowboyd/therubyracer/issues/215且尚未关闭- libv8 gem对于64位目标而言似乎包含损坏的二进制文件。唯一的解决方案似乎是从源代码构建libv8或像我一样做，然后备份到0.11beta8或更早的版本(有人说0.11beta8有效)。在此之前，我建议您在Github上观看215问题并等待修复。

谢谢。