错误：安装mysql2时出错：错误：无法构建gem本机扩展 [英] ERROR: Error installing mysql2: ERROR: Failed to build gem native extension

问题描述

我在尝试为Rails安装gem install mysql2 -v'0.3.17'时遇到了一些问题。当我尝试通过运行gem install mysql2 -v'0.3.17'或gem install mysql2 -v'0.3.17'来安装它时，它给了我以下错误：

 错误：安装mysql2时出错：
错误：无法构建gem原生扩展。 
 
 
由于某种原因无法创建Makefile，可能缺少
必需的库和/或头文件。检查文件以获取更多
的详细信息。您可能需要配置选项。 
 
提供的配置选项：
 --with-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 
 --with-mysql-dir 
 --without-mysql-dir 
 --with-mysql-include 
 --without-mysql- include = $ {mysql-dir} / include 
 --with-mysql-lib 
 --without-mysql-lib = $ {mysql-dir} / lib $ b $ --with-mysql -config 
 --without-mysql-config 
 
 Gem文件将保存在`.... / gems / ruby​​-1.9.3-p392 / gems / mysql2-0.3.17为检查`。 
记录到`... / gems / ruby​​-1.9.3-p392 / extensions / x86_64-darwin-14 / 1.9.1 / mysql2-0.3.17 / gem_make.out`的结果
  

如何解决这个问题并成功安装mysql2？

。

解决方案

我在Ubuntu 15.04中，并且得到了与上述相同的错误。

我做了：

pre $ sudo apt-get install libmysqlclient-dev


在此之后我做了：

  gem install mysql2 
  

现在我可以成功地做了

  rails新< app_name> -d mysql 
  

没有任何错误。

I am having some problems when trying to install gem install mysql2 -v '0.3.17' for Rails. When I try to install it by running gem install mysql2 -v '0.3.17' or gem install mysql2 -v '0.3.17' it gives me the following error:

ERROR:  Error installing mysql2:
    ERROR: Failed to build gem native extension.


Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the file for more
details.  You may need configuration options.

Provided configuration options:
    --with-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
    --with-mysql-dir
    --without-mysql-dir
    --with-mysql-include
    --without-mysql-include=${mysql-dir}/include
    --with-mysql-lib
    --without-mysql-lib=${mysql-dir}/lib
    --with-mysql-config
    --without-mysql-config

Gem files will remain installed in `..../gems/ruby-1.9.3-p392/gems/mysql2-0.3.17 for inspection`.
Results logged to `.../gems/ruby-1.9.3-p392/extensions/x86_64-darwin-14/1.9.1/mysql2-0.3.17/gem_make.out`

How can I fix this and successfully install mysql2?

Thanks all .

解决方案

I am in Ubuntu 15.04 and I got the same error as stated above.

I did :

 sudo apt-get install libmysqlclient-dev 

After this I did:

gem install mysql2

And now I can successfully do

rails new <app_name> -d mysql

without any errors.

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