Question

我在我的电脑上安装了导轨，根据此说明进行制作 - https://coderwall.com/p/auvm9g
安装新项目时 - rails new my_project -d mysql

    Installing mysql2 (0.3.13) 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /Users/albert/.rvm/rubies/ruby-1.9.3-head/bin/ruby extconf.rb 
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... 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
    --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/albert/.rvm/rubies/ruby-1.9.3-head/bin/ruby
    --with-mysql-config
    --without-mysql-config


Gem files will remain installed in /Users/albert/.rvm/gems/ruby-1.9.3-head@kyrgyz-tours/gems/mysql2-0.3.13 for inspection.
Results logged to /Users/albert/.rvm/gems/ruby-1.9.3-head@kyrgyz-tours/gems/mysql2-0.3.13/ext/mysql2/gem_make.out

An error occurred while installing mysql2 (0.3.13), and Bundler cannot continue.
Make sure that `gem install mysql2 -v '0.3.13'` succeeds before bundling.

谢谢大家！ Gem mysql2安装：）

Answer 1

您的错误似乎是您的系统中没有安装mysql，请安装mysql-server，mysql-client和必要的库，例如：libmysql-dev ...........

 -----
 mysql.h is missing.  please check your installation of mysql and try again.
 -----

您可以关注http://ariejan.net/2007/12/12/how-to-install-mysql-on-ubuntudebian/

如果Mac os http://www.randomactsofsentience.com/2013/05/gem-install-mysql2-missing-mysqlh-on-os.html

也

使用像Homebrew或MacPorts这样的包管理器可以很容易地解决这个问题。直接来自Oracle的MySQL的二进制分发和与OS X本身捆绑的二进制分发没有开发头，其中mysql.h就是其中之一。

和

brew install mysql

在这台机器上可用的宝石中找不到宝石'mysql2（＆gt; = 0）ruby'

1 个答案: