Ruby gem mysql2 安装错误 [英] Ruby gem mysql2 install error

问题描述

我在 Windows7 中安装了 Ruby 版本 ruby​​ 1.9.2p0 (2010-08-18) [i386-mingw32].和 gem 版本 1.3.7

I have the Ruby version ruby 1.9.2p0 (2010-08-18) [i386-mingw32] installed in Windows7. and the gem vesion 1.3.7

当我尝试安装 mysql gem 时，它显示 Failed to build gem native extension 错误，这是为什么?我的mysql版本是5.1.36(WampServer)

When i tried to install mysql gem, it is showing Failed to build gem native extension error, why is this? my mysql version is 5.1.36(WampServer)

E:RubyApps	est_app2>gem install mysql2
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

E:/Ruby192/bin/ruby.exe extconf.rb
checking for rb_thread_blocking_region()... *** 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=E:/Ruby192/bin/ruby
E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to genera
te an executable file. (RuntimeError)
You have to install development tools first.
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:435:in `try_link0'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:440:in `try_link'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:552:in `try_func'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:797:in `block in have_func'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postp
one'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
        from E:/Ruby192/lib/ruby/1.9.1/mkmf.rb:796:in `have_func'
        from extconf.rb:9:in `<main>'


Gem files will remain installed in E:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.
2.3 for inspection.
Results logged to E:/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.3/ext/mysql2/ge
m_make.out

E:RubyApps	est_app2>

推荐答案

由于这个问题不断出现在 google 上，作为排名靠前的结果，我应该指出，这个答案是近 2 年前的答案.这是更新的答案:如何使用mysql2"Windows 7 上 Rails 3 应用程序中的 gem?

据开发人员称，已经有一个已报告的错误，他正致力于将 mysql2 分离到 Windows.截至目前 - 它仍在进行中.暂时使用较旧的 mysql 驱动程序 - 或使用 sqlite 进行本地开发.

According to the developer there is a already a reported bug for it and he is working on parting mysql2 over to Windows. As of now - it's still in the works. Use the older mysql driver for now - or use sqlite for local development.

这是来自 googlegroups 的讨论

This is from the googlegroups discussion

块引用埃尔万，mysql2 问题跟踪器上已经有一张支持 Win32 的票在 http://github.com/brianmario/mysql2/issues#issue/8.你可以关注它是为了进步；我正在尽我最大的努力让事情顺利进行你们.坚持住！:)

Blockquote Hey Erwann, There's a ticket on the mysql2 issue tracker for Win32 support already at http://github.com/brianmario/mysql2/issues#issue/8 . You can follow it for progress; I'm doing my best to get things working smoothly for you guys. Hang tight! :)

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