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我一直在寻找这个错误，重新安装了一切，并尝试了一切。我在这里找到的都是旧帖子和旧版本。是的，我已经下载了 MySQL C 连接器并将 lib 移动到该 ruby​​ 目录。依然没有。

我正在运行 PC WINx64 Ruby 版本 2.0.0-p195 DevKit 的最新版本

**gem install mysql2**
**Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
        ERROR: Failed to build gem native extension.

    C:/Ruby200/bin/ruby.exe extconf.rb
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:/Ruby200/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:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql-2.9.1 for inspection.
Results logged to C:/Ruby200/lib/ruby/gems/2.0.0/gems/mysql-2.9.1/ext/mysql_api/gem_make.out**

B:\ROR\hcv>

Windows 一直在给我带来问题。但这就是我在工作中的全部。感谢你们。

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2 回答 2

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我已经从http://dev.mysql.com/downloads/mirror.php?id=412857下载了连接器

并在命令提示符下输入

gem install mysql --platform=ruby --with-mysql-include=C:\mysql-connector-c-6.1.0-winx64\include --with-mysql-lib=C:\mysql-connector-c -6.1.0-winx64\lib

于 2013-06-05T14:24:02.113 回答
0

尝试使用以下命令安装 mysql gem

gem install mysql2 -- '--with-mysql-lib="c:\Program Files\MySQL\MySQL Server 5.0\lib\opt" --with-mysql-include="c:\Program Files\MySQL\MySQL Server 5.0\include"'

注意：根据您的安装更改mysql安装目录

于 2013-08-20T12:16:42.437 回答