Windows 7 中的 Ruby on Rails 4：使用错误的 therubyracer gem 进行捆绑安装

Question

我正在尝试在 Windows 7 64 位中为 Ruby on Rails 项目运行 bundle install，但由于 therubyracer gem，我无法执行此操作。我在 Ubuntu 中开发它，但我需要在 Windows 7 计算机上将其作为生产运行。

经过搜索，我发现我应该在这里使用这个 gem：https://github.com/eakmotion/therubyracer_for_windows/blob/master。它似乎已经在我的 gems 中安装了therubyracer-0.11.0beta1-x86-mingw32。我还按照gem install libv8 --version '3.11.8.17' on ruby (windows) 中的建议使用gem install libv8 -v '3.16.14.7' -- --with-system-v8 安装了libv8

但是，即使按照该 gem 的安装说明进行操作，bundle install 仍会尝试安装 therubyracer gem（版本 0.12.1）。所以，我的问题是：如何使用我手动安装的 therubyracer gem 运行 bundle install？

版本：ruby 2.1.5，rails 4.1.8，使用 Rails Installer http://www.railsinstaller.org/en安装

Gemfile 的相关行：

gem "therubyracer"
gem "less-rails"
gem "twitter-bootstrap-rails"

如果我将"therubyracer" 换成"therubyracer_for_windows"，当我尝试使用bundle install 时，我会收到一条错误消息Could not find gem 'therubyracer_for_windows (>= 0) ruby' in the gems available on this machine.。

bundle install 的错误信息：

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/ther
ubyracer-0.12.1/ext/v8
C:/RailsInstaller/Ruby2.1.0/bin/ruby.exe -r ./siteconf20160211-944-u6p7vs.rb ext
conf.rb
checking for main() in -lpthread... no
checking for v8.h... no
*** 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=C:/RailsInstaller/Ruby2.1.0/bin/ruby
        --with-pthreadlib
        --without-pthreadlib
        --enable-debug
        --disable-debug
        --with-v8-dir
        --without-v8-dir
        --with-v8-include
        --without-v8-include=${v8-dir}/include
        --with-v8-lib
        --without-v8-lib=${v8-dir}/lib
C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.7/ext/libv8/l
ocation.rb:50:in `configure': You have chosen to use the version of V8 found on
your system (Libv8::Location::System::NotFoundError)
and *not* the one that is bundle with the libv8 rubygem. However,
it could not be located. please make sure you have a version of
v8 that is compatible with 3.16.14.7 installed. You may
need to special --with-v8-dir options if it is in a non-standard
location

thanks,
The Mgmt

        from C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/gems/libv8-3.16.14.
7/lib/libv8.rb:7:in `configure_makefile'
        from extconf.rb:32:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can
 be found here:

  C:/RailsInstaller/Ruby2.1.0/lib/ruby/gems/2.1.0/extensions/x86-mingw32/2.1.0/t
herubyracer-0.12.1/mkmf.log

Answer 1

尝试在 gemfile 中指定版本，例如：

gem "therubyracer", "0.11.0beta1"

我至少已经成功地让捆绑安装以这种方式完成。