DART support for Mac OS X?

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I'm running Gazebo on Mac OS X and I'd like to use the Dart physics engine.

When installing Gazebo, I followed the instructions to compile from source (http://gazebosim.org/tutorials?tut=install). Under "Compiling from Source (Mac OS X)" --> "Optional dependencies", it says to run "brew install gazebo4 --with-bullet --with-simbody", but makes no mention of how to install Dart.

Is this because there isn't Dart support for Mac OS X? Or is there some other command I can run to enable it?

Thanks very much!