Xcode 4.1: Modernizing Projects

When you open a project in Xcode 4.1, Xcode checks the project for any outdated settings like build settings, SDKs, and project file formats. If Xcode finds any outdated settings, they appear as a Project Modernization warning in the issue navigator. Select the Project Modernization warning or choose Editor > Modernize Project to update the project.

Checking for outdated settings makes working with old Xcode projects easier. If you have ever downloaded an old Xcode project and been unable to build it due to a missing SDK, you will appreciate Xcode’s ability to modernize a project.