无法在 Ruby 上安装 MySQL2 0.3.16 gem

Question

我在 Ruby 上安装 mysql2 gem 时遇到了一堆问题，我尝试了很多指南，但似乎没有任何工作...这是我尝试安装它时出现的错误，没有任何额外的命令.

C:\Users\Julián>gem install mysql2 --no-rdoc --no-ri
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:/Ruby200-x64/bin/ruby.exe extconf.rb
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
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lm... yes
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lz... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lsocket... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lnsl... no
checking for mysql_query() in -lmysqlclient... no
checking for main() in -lmygcc... no
checking for mysql_query() in -lmysqlclient... 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-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-mysql-config
    --without-mysql-config
    --with-mysql-dir
    --without-mysql-dir
    --with-mysql-include
    --without-mysql-include=${mysql-dir}/include
    --with-mysql-lib
    --without-mysql-lib=${mysql-dir}/
    --with-mysqlclientlib
    --without-mysqlclientlib
    --with-mlib
    --without-mlib
    --with-mysqlclientlib
    --without-mysqlclientlib
    --with-zlib
    --without-zlib
    --with-mysqlclientlib
    --without-mysqlclientlib
    --with-socketlib
    --without-socketlib
    --with-mysqlclientlib
    --without-mysqlclientlib
    --with-nsllib
    --without-nsllib
    --with-mysqlclientlib
    --without-mysqlclientlib
    --with-mygcclib
    --without-mygcclib
    --with-mysqlclientlib
    --without-mysqlclientlib

extconf failed, exit code 1

Gem files will remain installed in C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mysql
2-0.3.16 for inspection.
Results logged to C:/Ruby200-x64/lib/ruby/gems/2.0.0/extensions/x64-mingw32/2.0.
0/mysql2-0.3.16/gem_make.out

我真的很难过，我试图在这里找到解决方案，但找不到任何东西。我尝试安装 MySQL 连接器并设置 with-mysql-lib 命令。请帮忙！

Answer 1

由于您使用的是 Windows，因此您需要考虑必须安装 MYSQL C-Connector 头文件才能使其工作

我们写了一个tutorial about this here

--

您需要使用以下步骤：

1. 安装MYSQL C-Connector 文件（路径中不包含任何空格）
2. 再次安装 MYSQL2 gem（使用正确的路径引用）
3. 将lbmysql.dll 复制到您的ruby/bin 文件夹

首先，您需要下载 MYSQL C-Connector 文件：

它必须是 32 位 C-Connector

将其安装到没有空格的路径后，您可以再次使用mysql2 安装命令，并带有配置选项：

gem install mysql2 --platform=ruby -- '--with-mysql-dir="C:\mysql-connector-path"'

之后，您可以将libmysql.dll 从您的mysql 文件传输到您的ruby/bin 目录：

Answer 2

在终端中。首先执行“locate mysql_config”，然后将以下命令中的路径替换为该文件所在的位置。

gem install mysql2 --no-rdoc --no-ri --with-mysql-config=路径