Xcode 4.0 Developer Preview 2 Release Notes

Xcode 4.0 Developer Preview 2 Release Notes

About Xcode 4 Developer Preview 2

Supported Configurations

Xcode 4 Developer Preview 2 requires OS X v10.6.4. It does not install or run on earlier versions of OS X.

Xcode supports universal development for iOS 4 and 3.2 and OS X v10.5 and later. It does not support development for iOS 3.1 or earlier or OS X v10.4 or earlier.

Installation

Xcode 4 Developer Preview 2 is installed by default into the /Xcode4 directory and does not conflict with an existing installation of Xcode 3.2.

Important: Several features of Xcode 4, such as the Snapshot mechanism, support for the Git SCM system, and System Trace instrumentation in Instruments, require tools that are installed by the System Tools package. You must check the System Tools check box when installing Xcode 4 in order to use the these features. It is recommended that you restart your Mac after installing System Tools.

The installer optionally installs Unix tools into /usr, so conventional makefile-based and config-based builds operate correctly. Use the xcode-select command-line utility to set the default toolset for command-line builds. If you choose this option when installing Xcode 4, Xcode 4 Unix tools replace the Xcode 3.2 Unix tools in /usr. This does not effect the functionality of any Xcode 3.2 installations.