如何在 Ubuntu 9.10 上安装 MySQL Ruby Gem?

如何在 Ubuntu 9.10 上安装 MySQL Ruby Gem?

我在安装 Ruby Gem for MySQL 时遇到问题。这是我正在运行的命令:

sudo gem install mysql

这是我得到的输出:

Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
    ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb
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... yes
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... yes
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=/usr/bin/ruby1.8
    --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}/lib
    --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


Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/mysql-2.8.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out

为了安装它我需要做什么?

答案1

谢谢此主题我发现安装失败的原因是由于

...编译包时指向错误方向的路径。

幸运的是,解决方案非常简单:

sudo gem uninstall mysql
sudo apt-get install libmysqlclient-dev -y
sudo gem install mysql 

笔记:我在尝试卸载 mysql 时收到一条错误消息,但没关系,因为它一开始就没有安装。在安装 mysql gem 时,我收到类似错误:的消息No definition for next_result,但这些不是错误。安装文档时会发生这种情况。它们只是说某些功能没有可用的文档。

答案2

您实际上并不需要该 gem 即可在 Ruby 中使用 MySQL。Debian/Ubuntu 中有一个包,其中已编译并准备好了相同的代码。只需输入sudo apt-get install libmysql-ruby

答案3

在 Ubuntu Hardy 8.04 上我使用 apt-get install 来工作:

sudo apt-get install libmysqlclient15-dev -y

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