Xcode 3.1 is Apple's integrated development environment (IDE). This tag should only be used for questions about this specific version of Xcode itself, and not for general Mac or iPhone OS programming topics. Use [cocoa] for Mac programming questions, or [cocoa-touch] for iOS (formerly iPhone OS) programming questions.
Xcode 3.1 is an update of Apple's integrated development environment for Mac OS X and iPhone OS.
Xcode 3.1.x supports OS X SDK(s) for Mac OS X Panther (10.3.x), Mac OS X Tiger (10.4.x), and Mac OS X Leopard (10.5.x) but can target non-Mac OS X platforms, including iPhone OS 2 SDK. Another new feature is support of Subversion 1.5 as Xcode 3.1 SCM.
Xcode 3.1 was released on August 2, 2008 and included the GCC 4.2 and LLVM GCC 4.2 compilers.