问题描述
我收到此错误：
sudo gem install mysql2
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 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=/usr/bin/ruby1.8
--with-mysql-config
--without-mysql-config
Gem files will remain installed in /var/lib/gems/1.8/gems/mysql2-0.2.6 for inspection.
Results logged to /var/lib/gems/1.8/gems/mysql2-0.2.6/ext/mysql2/gem_make.out
我努力了：
-
卸载mysql2并重新安装
-
用apt-get卸载mysql
-
从MySQL安装了dev-tools
-
以及Google上几乎所有的页面
我怎样才能解决这个问题？
最佳解决思路
在安装mysql2 gem之前，您需要安装libmysqlclient-dev：
sudo apt-get install libmysqlclient-dev
gem install mysql2
这应该可以在最新的Ubuntu版本上解决此问题。
次佳解决思路
感谢Andre Schweighofer，仅此而已
sudo apt-get install libmysqlclient-dev
gem install mysql2
..
bundle update
bundle install
完成！
第三种解决思路
需要安装mysql开发包
yum install mysql-devel