Rails安装mysql错误

嗨，我想安装mysql2 gem，但一直失败

C:\Users\HuiHui\Documents\ruby 2.0.0>gem install mysql2 -v '0.3.11'
Fetching: mysql2-0.3.11.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

    C:/RailsInstaller/Ruby200-x64/bin/ruby.exe extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for main() in -llibmysql... 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/Ruby200-x64/bin/ruby
        --with-mysql-dir
        --without-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/
        --with-libmysqllib
        --without-libmysqllib


Gem files will remain installed in C:/RailsInstaller/Ruby200-x64/lib/ruby/gems/2
.0.0/gems/mysql2-0.3.11 for inspection.
Results logged to C:/RailsInstaller/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-
0.3.11/ext/mysql2/gem_make.out

尽管更改了版本、卸载和安装时没有任何版本，但它仍然存在相同的问题。有人能解释一下吗？我在窗户上做事

附件是日志文件：

编辑

在尝试了中级教程之后，我遇到了这个错误

C:\Users\HuiHui\sutdweb>gem install mysql2 -- --with-mysql-dir=c:\mysql-connecto
r-c-6.1.5-win32
Temporarily enhancing PATH to include DevKit...
Building native extensions with: '--with-mysql-dir=c:\mysql-connector-c-6.1.5-wi
n32'
This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

    C:/RailsInstaller/Ruby200-x64/bin/ruby.exe extconf.rb --with-mysql-dir=c:\my
sql-connector-c-6.1.5-win32
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
-----
Using --with-mysql-dir=c:\mysql-connector-c-6.1.5-win32
-----
checking for main() in -llibmysql... 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/Ruby200-x64/bin/ruby
        --with-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/
        --with-mysql-dir
        --with-mysql-include
        --without-mysql-include=${mysql-dir}/include
        --with-mysql-lib
        --without-mysql-lib=${mysql-dir}/lib
        --with-libmysqllib
        --without-libmysqllib


Gem files will remain installed in C:/RailsInstaller/Ruby200-x64/lib/ruby/gems/2
.0.0/gems/mysql2-0.3.16 for inspection.
Results logged to C:/RailsInstaller/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql2-
0.3.16/ext/mysql2/gem_make.out

---

在您对如何使用gem和mysql2指定配置选项的回答中，是这样的：

gem install mysql2 -- --with-mysql-dir=c:\mysql-connector-c-6.1.1-win32

详情如下：

有人能解释一下吗

当然-问题在于Windows与

MYSQL2

gem的兼容性-默认情况下，Windows不附带允许gem与MYSQL连接所需的MYSQL头文件

<>为了安装它，你需要安装MySQL C连接器包，并使用它给你的GEM提供它需要运行的C++头文件：

--

我们已经为此编写了一个教程

如果您执行以下操作，安装

mysql2

gem实际上相对简单：

在系统上安装/解压缩

安装gem，引用不带空格的路径

将

libmysql.dll

复制到Ruby安装中

第一步是下载最新版本的mysql 32位c-connector。解压/安装到不带空格的路径中——这非常重要

第二步是使用以下命令安装gem，引用c-connector文件：

gem install mysql2 --platform=ruby -- ‘--with-mysql-dir=”C:\mysql-connector-path”’

最后，您应该将

libmysql.dll

文件从

C-Connector

文件的

/bin

文件夹复制到

Ruby

的

/bin

目录中

---

这应该安装gem

你有没有像上面说的那样查看日志以了解更多详细信息？愚蠢的问题是：你正在安装mysql gem（它与真正的mysql库对话）。你真的安装了mysql吗？@sevensacat是的，我检查过了，但我不明白日志中有什么…@TarynEast是的！我有一个mysql工作台，具体取决于你的操作系统——我猜这里是windows（我只能在ubuntu上帮你）。我想在谷歌上搜索“在windows上安装mysql开发头”之类的东西。嗨@Rich Peck，我试过了，他们给了我这个错误。。。C:\Users\HuiHui\sutdweb>gem安装mysql2--platform=ruby----with mysql dir=“C:\Program Files\mysql\mysql-5.5.38-win32”错误：执行gem时。。。（OptionParser:：InvalidOption）无效选项：-ùplatform=ruby----with mysql dir=“C:\Program Files\mysql\mysql-5.5.38-win32ö198抱歉，这是命令的格式问题-让我来为您修复现在应该没问题了（如果您从这里复制命令，而不是从中复制命令）gem安装mysql2--platform=ruby--with mysql dir=”C:\Program Files\MySQL\MySQL-5.5.38-win32“'在这里！谢谢！我在尝试了这些步骤后添加了错误消息…请看一下