我在我的机器上安装mysql2 gem时遇到了麻烦。
我的OS X 10.8包含最新的Xcode,而mySql是通过Homebrew安装的。使用最新的RVM安装所有rubies。
我可以在ruby 2.0.0-p195
下安装mysql2[~]$ rvm use 2.0.0 [ruby-1.9.3-p429]
Using /Users/aselder/.rvm/gems/ruby-2.0.0-p195
[~]$ gem in mysql2 [ruby-2.0.0-p195]
Fetching: mysql2-0.3.11.gem (100%)
Building native extensions. This could take a while...
Successfully installed mysql2-0.3.11
1 gem installed
在Ruby 1.9.3和1.8.7下,找不到mysql.h文件
[~]$ rvm use 1.9.3 [ruby-1.9.3-p429]
Using /Users/aselder/.rvm/gems/ruby-1.9.3-p429
[~]$ gem in mysql2 [ruby-1.9.3-p429]
Fetching: mysql2-0.3.11.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/Users/aselder/.rvm/rubies/ruby-1.9.3-p429/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... 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/aselder/.rvm/rubies/ruby-1.9.3-p429/bin/ruby
--with-mysql-config
--without-mysql-config
Gem files will remain installed in /Users/aselder/.rvm/gems/ruby-1.9.3-p429/gems/mysql2-0.3.11 for inspection.
Results logged to /Users/aselder/.rvm/gems/ruby-1.9.3-p429/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
我也尝试了各种命令行选项来获取gem以找到mysql安装:
e.g。 gem install mysql2 - --with-mysql-config = / usr / local / opt / mysql / bin / mysql_config
答案 0 :(得分:3)
我找到了这个答案,它解决了我的问题: Error installing mysql2: Failed to build gem native extension
引用:
在使用aptitude的Ubuntu / Debian和其他发行版上:
sudo apt-get install libmysql-ruby libmysqlclient-dev
在Red Hat / CentOS和其他使用yum的发行版上:
sudo yum install mysql-devel
在带有自制软件的Mac OS X上:
brew install mysql
我在debian上,在运行上述命令后,我跑了:
gem install mysql2
并且它工作了np。
答案 1 :(得分:1)
我解决了在启动mysql服务器的情况下安装gem的问题!
brew install mysql
mysql.server start
bundle install
在ruby-1.9.3-p125下。
希望这有帮助
答案 2 :(得分:0)
尝试使用Homebrew安装mysql
,使用Bundler安装mysql2
gem。
brew update
brew install mysql
将以下内容添加到Gemfile
gem "mysql2"
执行命令
bundle install
答案 3 :(得分:0)
我通过自制软件将mysql从5.6降级到5.5来解决了这个问题。无法提供更详细的解释,但它修复了它。
答案 4 :(得分:0)
我有一个非常愚蠢的解决方案:我打开Xcode并接受了许可协议。更新下载了一个新版本,在手动接受新协议之前我无法编译任何内容。