我正在尝试在服务器上安装mysql2。我的第一次不幸的尝试如下：
gem install mysql2
输出结果
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... 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... 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 /home/aaalsubaie/.gems/gems/mysql2-0.3.11 for inspection.
Results logged to /home/aaalsubaie/.gems/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
这并不是故事的结束
运行之后
[ps89405]$ mysql --help | grep Default -A 1
Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf
我尝试了。
gem install mysql2 -- --with-mysql-config=~/.my.cnf --ruby=/usr/bin/ruby1.8
并且
gem install mysql2 -- --with-mysql-config=/usr/etc/my.cnf --ruby=/usr/bin/ruby1.8
并且。
gem install mysql2 -- --with-mysql-config=/etc/my.cnf --ruby=/usr/bin/ruby1.8
没有运气，出现了同样的错误。
我没有运行rvm。
我的gem环境是：
RubyGems Environment:
- RUBYGEMS VERSION: 1.3.7
- RUBY VERSION: 1.8.7 (2010-08-16 patchlevel 302) [x86_64-linux]
- INSTALLATION DIRECTORY: /home/aaalsubaie/.gems/
- RUBY EXECUTABLE: /usr/bin/ruby1.8
- EXECUTABLE DIRECTORY: /home/aaalsubaie/.gems/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /home/aaalsubaie/.gems/
- /usr/lib/ruby/gems/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://rubygems.org/
这是我第二天尝试部署我的第一个 Rails 应用程序，但一直没有成功。我曾经以为这会容易许多。
更新：
现在命令正在运行并安装 mysql2 gem，感谢 Yanhao 的帮助。
gem install mysql2 -- --with-mysql-config=/usr/bin/mysql_config
我现在有一个关于mysql2 gem的新问题， 当我运行时，出现以下情况：
bundle exec rails console
我得到了
/home/aaalsubaie/ajhezaty.com/releases/20120411095320/vendor/bundle/ruby/1.8/gems/mysql2-0.3.11/lib/mysql2.rb:9:in `require': no such file to load -- mysql2/mysql2 (LoadError)
from /home/aaalsubaie/ajhezaty.com/releases/20120411095320/vendor/bundle/ruby/1.8/gems/mysql2-0.3.11/lib/mysql2.rb:9
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `require'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `each'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `require'
from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:112:in `require'
from /home/aaalsubaie/ajhezaty.com/releases/20120411095320/config/application.rb:7
from /home/aaalsubaie/ajhezaty.com/releases/20120411095320/vendor/bundle/ruby/1.8/gems/railties-3.2.1/lib/rails/commands.rb:39:in `require'
from /home/aaalsubaie/ajhezaty.com/releases/20120411095320/vendor/bundle/ruby/1.8/gems/railties-3.2.1/lib/rails/commands.rb:39
from script/rails:6:in `require'
from script/rails:6
libmysql-ruby，我得到了E: 无法定位软件包 libmysql-ruby的错误，但只安装libmysqlclient-dev仍然可以正常工作。 - Rich Steinmetz