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Cross-Development

Cross-development refers to the ability to develop software that can be deployed on, and take advantage of features from, specified versions of Mac OS X, including versions different from the one you are developing on. CodeWarrior provides some support for cross-development for versions of the Mac OS through Universal Interfaces, but those headers have not been updated for recent versions of Mac OS X.

Xcode supports cross-development for various versions of Mac OS X. You can specify which version of Mac OS X headers and libraries to build with, as well as the earliest Mac OS X system version on which the software will run.

To use cross-development for a target in an Xcode project, you make two selections:

• In the General pane of the inspector window for the project group, you use the Cross-Develop Using Target SDK pop-up to select an OS version to develop for, such as Mac OS X 10.4.0. All targets in the project are built as though you were building in that version of the operating system.

• In the Build pane of the inspector window for the target or project, you choose a Mac OS X deployment version, such as 10.2. For this target or project, this specifies the earliest Mac OS X system version on which your software will run.

You can also use the SDK headers and libraries to support cross-development in CodeWarrior projects. For details, see “Maintaining Parallel Projects in Xcode and CodeWarrior.”

For detailed documentation on cross-development, see Cross-Development Programming Guide.

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