OmniGroup

Checking out the source

git clone git://github.com/omnigroup/OmniGroup

Configuring Xcode 4

Xcode 4.3 or higher is required
Add the projects you want to your workspace
If building for iOS, you need to edit your scheme to turn off implicit dependencies and parallel builds. Xcode 4 doesn't understand implicit dependencies with static libraries, so you'll need to add the dependencies to your scheme in the right order.
Take a look in the Workspaces directory for a sample workspace for the TextEditor iPad example app.

Configuring the Source

We place our project-wide configuration options in xcconfig files, under OmniGroup/Configurations. The naming scheme of the files is fairly straightforward, hopefully. Each project has Omni-Global-{Debug,Release,...}.xconfig as the basis for the corresponding configuration. Each Mac target has Omni-{Bundle,Application,Tool,...}-{Debug,Release,...}.xconfig and each iOS target has Touch-{Application,Library}-{Debug,Release,...}.xcconfig. Each of these end point configurations when #includes 'superclass' configurations (with "Common" in the name).

Building for Xcode 4

For debug builds, just build in a workspace as above. We don't yet do production builds with Xcode 4, so this is a bit of a gray area still. The most likely issues are setting up the @executable_path support for Mac frameworks and code signing for iOS. Give it a whirl and send a patch!

Building from the command line

To build Debug versions of all the Omni frameworks:

cd OmniGroup
./Scripts/Build Frameworks

To build Release versions of all the Omni frameworks, instead do:

./Scripts/Build Frameworks install