Ruby gem mysql2安装失败
Ruby gem mysql2安装失败
提问于 2010-11-07 04:57:12
当我尝试安装mysql2 gem时，它失败了，没有明显的错误。有没有人知道如何解决这个问题，以便安装mysql2？
$ sudo gem install mysql2
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... no
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... 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=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
--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 /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6 for inspection.
Results logged to /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/ext/mysql2/gem_make.out回答 10
Stack Overflow用户
回答已采纳
发布于 2010-11-07 05:03:51
您的机器上必须安装64位MySQL，外加安装xcode时获得的构建工具。
Stack Overflow用户
发布于 2010-12-22 23:44:41
Ubuntu：
sudo apt-get install libmysqlclient-dev #(mysql development headers)
sudo gem install mysql2 -- --with-mysql-dir=/etc/mysql/就这样!
结果：
Building native extensions. This could take a while...
Successfully installed mysql2-0.2.6
1 gem installed
Installing ri documentation for mysql2-0.2.6...
Enclosing class/module 'mMysql2' for class Result not known
Enclosing class/module 'mMysql2' for class Client not known
Installing RDoc documentation for mysql2-0.2.6...
Enclosing class/module 'mMysql2' for class Result not known
Enclosing class/module 'mMysql2' for class Client not knownStack Overflow用户
发布于 2010-11-07 05:10:33
mysql2需要MySQL开发头才能正确编译。这是必要的，因为大部分功能都是用C编写的，并随后链接到MySQL。
一种解决方案是将gem安装程序显式地指向mysql安装文件夹，如下所示
gem install mysql2 -- --with-mysql-dir=/usr/local/mysql
# or where ever you installed your mysql server to或者通过将mysql服务器安装到已知位置(例如，通过使用homebrew)。然后安装gem
# install the mysql server locally
brew install mysql
# install the gem
gem install mysql2这两种方法都需要安装XCode，才能安装所需的GCC编译器。
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原文链接：
https://stackoverflow.com/questions/4115126
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