CTO/CIO. Ruby. Rails.
just some more awesome
On my system, I installed MySQL with installer downloaded from their site, not MacPorts, or Homebrew.
So, MySQL is installed at this path:
/usr/local/mysql-5.1.42-osx10.6-x86_64/
I have a sym-link for that path at:
/usr/local/mysql/
The following command worked for me for installing the mysql gem.
env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config