The arc mode is shared with non-arc modes in the Xcode project (GO)

The Xcode project often incorporates some old code, which may be in non-arc mode. Mixed compilation, you will encounter the situation of compilation error.

How do I share arc mode and non-arc mode?

In addition to providing the option to use ARC mode for the entire project, Xcode can also label individual files to specify whether to use Arc mode.

Ways to add Tags:

Open: Your target, Build phases-Compile Sources.

Double-click the corresponding *.M file

In the pop-up window, enter the label mentioned above-FOBJC-ARC/-fno-objc-arc

(1) If your project uses a non-arc mode, add the-FOBJC-ARC tag to the ARC mode code file.

If your project is using ARC mode, add the-FNO-OBJC-ARC tag to the non-ARC mode code file.

Click Done to save

Note: Often someone encounters a double-click in the build phases in xcode5.1. Why can't I bounce a small box of arc? In fact, not a double-click useless, but the display area is not enough to see, you put the right side of the bar or wider, you can.

For more information, refer to: http://www.cnblogs.com/Piosa/archive/2013/01/24/2875556.html

The arc mode is shared with non-arc modes in the Xcode project (GO)