本文介绍了Ubuntu上安装mysql gem的困难的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我试图安装mysql 2.8.1 gem。我将使用它在Ubuntu 10.04上构建Rails 2.0.2应用程序。我会使用Ruby 1.8.7。我已经安装了开发依赖项（其他宝石）。由于某些原因，我无法安装它。我无法完全弄清楚如何解决它。请帮助!!
我在终端上得到以下内容，当我尝试安装时：
mohnish @ pc146724-desktop：〜/ Downloads $ sudo gem install mysql-2.8.1.gem 构建原生扩展。这可能需要一段时间... 错误：安装mysql-2.8.1.gem时出错：错误：无法构建gem本机扩展。 /usr/bin/ruby1.8 extconf.rb 在-lmysqlclient中检查mysql_query（）...没有在-lm中检查main（）...是在-lmysqlclient中检查mysql_query（）...没有在-lz中检查main（）...是在-lmysqlclient中检查mysql_query（）... no 在-lsocket中检查main（）... no 在-lmysqlclient中检查mysql_query（）... no 检查main（）in -lnsl ... yes 在-lmysqlclient中检查mysql_query（）... no 在-lmygcc中检查main（）... no 在-lmysqlclient中检查mysql_query（）... no * ** extconf.rb失败*** 由于某些原因无法创建Makefile，可能缺少必需的库和/或头文件。查看mkmf.log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 --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文件将保留为我安装在/usr/lib/ruby/gems/1.8/gems/mysql-2.8.1中进行检查。 结果记录到/usr/lib/ruby/gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out mohnish @ pc146724-desktop：〜/ Downloads $感谢您的帮助!! 解决方案
试试这个，然后安装mysql gem： $ b pre $ sudo apt-get install libmysqlclient-dev如果这还不够，请尝试像这样
sudo apt-get install libmysqlclient-dev libmysqlclient16 ruby-dev
I am trying to install the mysql 2.8.1 gem. I would be using it to build a Rails 2.0.2 application on Ubuntu 10.04. I would be using Ruby 1.8.7. I have installed the development dependencies(other gems). For some reasons I am unable to install it. I am not able to exactly figure out how to fix it. Please help!!
I get the following in the terminal when I try to install it:
mohnish@pc146724-desktop:~/Downloads$ sudo gem install mysql-2.8.1.gem Building native extensions. This could take a while... ERROR: Error installing mysql-2.8.1.gem: 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 mohnish@pc146724-desktop:~/Downloads$Thanks for your help!!
解决方案Try this and then install the mysql gem:
sudo apt-get install libmysqlclient-devIf that's not sufficient try it like this
sudo apt-get install libmysqlclient-dev libmysqlclient16 ruby-dev
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Ubuntu上安装mysql gem的困难
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