From: Andrew Ting Date: 2009-12-21T23:24:57+09:00 Subject: Help with gem ruby mysql error Hi, I downloaded & double clicked 3 files to install mysql 5.1 for MacOS, but i get the following errors, can someone advise please? Thanks! Ad ====================================================== sudo gem install mysql -- --with-mysql-config=/path/to/mysql_config Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb --with-mysql-config=/path/to/mysql_config extconf.rb:10: command not found: /path/to/mysql_config --cflags Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql-2.8.1 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/mysql-2.8.1/ext/mysql_api/gem_make.out And when i ran one ruby program :- $ ruby blog.rb /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/adapters/mysql.rb:2: LoadError: require 'mysql' did not define Mysql::CLIENT_MULTI_RESULTS! (Sequel::AdapterNotFound) You are probably using the pure ruby mysql.rb driver, which Sequel does not support. You need to install the C based adapter, and make sure that the mysql.so file is loaded instead of the mysql.rb file. from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/core.rb:165:in `require' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/core.rb:165:in `each' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/core.rb:165:in `require' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/database.rb:111:in `adapter_class' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/database.rb:140:in `connect' from /Library/Ruby/Gems/1.8/gems/sequel-3.7.0/lib/sequel/core.rb:100:in `connect' from ./data/init.rb:7 from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require' from blog.rb:7 -- Posted via http://www.ruby-forum.com/.