'/usr/local/include/gl' => '/usr/local/lib',
'/usr/include/GL' => '/usr/lib',
'/usr/include/gl' => '/usr/lib',
+ '/opt/local/include/SDL' => '/opt/local/lib', # Mac Ports
+ '/opt/local/include' => '/opt/local/lib', # Mac Ports
'/System/Library/Frameworks/SDL_mixer.framework/Headers' => '../../lib',
'/System/Library/Frameworks/SDL_image.framework/Headers' => '../../lib',