使用windows安装mysql2时出错

Question

It's strange the I can install mysql2 with this command: $ gem install mysql2 --platform=ruby -- '--with-mysql-lib="c:\\Program Files\\MySQL\\MySQL Server 5.5\\lib" --with-mysql-include="c:\\Program Files\\MySQL\\MySQL Server 5.5\\include"' Following is the results:

Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
Successfully installed mysql2-0.3.10
1 gem installed
Installing ri documentation for mysql2-0.3.10...
Installing RDoc documentation for mysql2-0.3.10...

But when I'm running bundle install (apperently I have a lot of gems needs to install), it is failed to install mysql2, so bundle install stopped there, that really drives me crazy... anyone could help? a tons of thanks! Below is the result from bundle install :

Installing mysql2 (0.3.8) with native extensions
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension
.

        c:/Ruby192/bin/ruby.exe extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... no
checking for main() in -llibmysql... 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=c:/Ruby192/bin/ruby
        --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-libmysqllib
        --without-libmysqllib


Gem files will remain installed in G:/Desktop/20090319-/Rails Examples/ClockingI
T/vendor/bundle/ruby/1.9.1/gems/mysql2-0.3.8 for inspection.
Results logged to G:/Desktop/20090319-/Rails Examples/ClockingIT/vendor/bundle/r
uby/1.9.1/gems/mysql2-0.3.8/ext/mysql2/gem_make.out
An error occured while installing mysql2 (0.3.8), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.8'` succeeds before bundling.

Answer 1

在我的ubuntu机器上，必须首先运行apt-get install libmysqld-dev ，然后gem install mysql2 ...它就像一个魅力:)

Answer 2

Try this installing mysql from outside the bundle and if it works remove mysql from Gemfile

 sudo gem install mysql --no-rdoc --no-ri -- 

--with-mysql-config=/usr/local/mysql/bin/mysql_config

Also

apt-get install libmysqld-dev

Answer 3

Works fines, please download the version mysql-connector-c-6.1.5-win32, unzip on the folder, and try this.

Works well for me.

gem install mysql2 --no-ri --no-rdoc --platform=ruby -- --with-mysql-include=C:\\mysql-connector\\mysql-connector-c-6.1.5-win32\\include --with-mysql-lib=C:\\mysql-connector\\mysql-connector-c-6.1.5-win32\\lib

Answer 4

The version of mysql2 gem you're trying to install have issues on Windows.

Please install mysql2 gem without indicating the version:

gem install mysql2