
Here you will find a collection of migration guides and videos as well as links to ObjectARX developer documentation that will be essential for developing AutoCAD 2011 for Mac applications.
AutoCAD 2011 for Mac is a native 64-bit Mac OS X application developed in C/C++ and Objective-C. It is built on top of a cross-platform CAD engine that was factored out of the AutoCAD codebase and is now shared between the Windows and Mac OS X versions of AutoCAD. The core CAD engine supports a cross-platform abstract host interface that is implemented in terms of platform-specific code. This design allows the application itself to support a native Mac OS X interface while using the same CAD engine that drives the Windows version - innovations in the core engine benefit versions on both platforms.
The host application for AutoCAD 2011 for Mac is implemented using the Cocoa framework.
ObjectARX - Mac OS X Migration Guide
Fiberless Application Requirements