このあたりを参考に。
Ruby on RailsをMAMPで動かすためのメモ
http://www.huin-lab.com/2010/05/09/ruby-on-rails%E3%82%92mamp%E3%81%A7%E5%8B%95%E3%81%8B%E3%81%99%E3%81%9F%E3%82%81%E3%81%AE%E3%83%A1%E3%83%A2
mamp(pro)でrailsの環境を
http://www.milds.net/blog/162
売ったコマンドは以下。
$/configure --with-unix-socket-path=/Applications/MAMP/tmp/mysql/mysql.sock --without-server --prefix=/Applications/MAMP/Library $make -j2 $cp libmysql/.libs/*.dylib /Applications/MAMP/Library/lib/mysql $mkdir /Applications/MAMP/Library/include $cp -R include /Applications/MAMP/Library/include/mysql $sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
でも結局Webrickを起動するんだったらMAMPって関係あるの...?
続Ruby on Rails環境構築(Locomotive+MAMP+RadRails)
http://kotyalog.blog91.fc2.com/blog-entry-38.html