Game Development Reference
From the Xcode menu choose Edit Refactor Convert to Objective-C ARC.. . .
This brings up the dialog shown in Figure 2-15 , where you can select the targets to
convert. Select only your app's target and not the cocos2d-library target. Then click
Figure 2-15 . Convert only your project's target and not the cocos2d-library target
Xcode first tries to build your code with ARC enabled to determine the changes it will
have to make. This only takes a few seconds. When complete, an introduction dialog
explains what comes next. Read the text and click Next. The dialog shown in Figure
2-16 allows you to review the changes it is about to make. You can safely accept them
all by clicking Save.