在我的Mac OSX 10.6 32位中，我可以很容易地安装mysql2 gem，但是在mini mac 10.6 64位服务器中则不能。
我已经在麻烦的服务器上安装了MySQL 5.5.11，而在我的家庭Mac MySQL 5.5.0.m2中
我以某种方式运行 bundle 安装时，在服务器中尝试在家庭mysql2.0.2.6中安装mysql2.0.3.2
请不要告诉我
env ARCHFLAGS =“-arch x86_64” sudo gem install mysql2 --version'= 0.2.6'---with-mysql-config = / usr / local / mysql / bin / mysql_config
我尝试过，不起作用。
$ PATH中包含的/ usr / local / mysql / bin也没有帮助。
错误代码:
Installing mysql2 (0.3.2) with native extensions /Users/administrator/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:533:in `rescue in block in build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
/Users/administrator/.rvm/rubies/ruby-1.9.2-p180/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing. please check your installation of mysql and try again.
-----
*** 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=/Users/administrator/.rvm/rubies/ruby-1.9.2-p180/bin/ruby
--with-mysql-config
--without-mysql-config
Gem files will remain installed in /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/mysql2-0.3.2 for inspection.
Results logged to /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/mysql2-0.3.2/ext/mysql2/gem_make.out
from /Users/administrator/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:511:in `block in build_extensions'
from /Users/administrator/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:486:in `each'
from /Users/administrator/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:486:in `build_extensions'
from /Users/administrator/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/installer.rb:159:in `install'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/source.rb:96:in `install'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/installer.rb:55:in `block in run'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/spec_set.rb:12:in `block in each'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/spec_set.rb:12:in `each'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/spec_set.rb:12:in `each'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/installer.rb:44:in `run'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/installer.rb:8:in `install'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/cli.rb:225:in `install'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/vendor/thor/task.rb:22:in `run'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/vendor/thor/invocation.rb:118:in `invoke_task'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/vendor/thor.rb:246:in `dispatch'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/lib/bundler/vendor/thor/base.rb:389:in `start'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/gems/bundler-1.0.12/bin/bundle:13:in `<top (required)>'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/bin/bundle:19:in `load'
from /Users/administrator/.rvm/gems/ruby-1.9.2-p180/bin/bundle:19:in `<main>'
请您参考如下方法:
我尝试了此处发布的所有解决方案，但并不幸运。我用自制软件重新安装了mysql几次，仍然没有运气。然后，我遇到了一篇博客，提出了解决方案。
我在/usr/local/Cellar/mysql/5.6.12/bin中编辑了mysql_config文件并删除了
W编译器选项-Wno-null-conversion和-Wno-unused-private-field用于cflags和cxxflags。
这解决了gem install mysql2和bundle install的问题
引用:http://www.randomactsofsentience.com/2013/05/gem-install-mysql2-missing-mysqlh-on-os.html
