在mac上安装mysql2 - 错误：安装mysql2时出错：错误：无法构建gem原生扩展

Question

如何解决此错误？

$ gem install mysql2 --platform=ruby -v '0.3.11'                     
Building native extensions. This could take a while... 
ERROR: Error installing mysql2: 
     ERROR: Failed to build gem native extension. 

     /Users/durrantm/.rvm/rubies/ruby-1.9.3-p125/bin/ruby extconf.rb 
checking for rb_thread_blocking_region()... yes 
checking for rb_wait_for_single_fd()... yes 
checking for mysql_query() in -lmysqlclient... no 
checking for main() in -lm... yes 
checking for mysql_query() in -lmysqlclient... no 
checking for main() in -lz... yes 
checking for mysql_query() in -lmysqlclient... no 
checking for main() in -lsocket... no 
checking for mysql_query() in -lmysqlclient... no 
checking for main() in -lnsl... no 
checking for mysql_query() in -lmysqlclient... no 
checking for main() in -lmygcc... no 
checking for mysql_query() in -lmysqlclient... 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 
     --with-opt-include 
     --without-opt-include=${opt-dir}/include 

Answer 1

使用brew install mysql修复了这个问题。