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Garbage Collection is not supported

当Xcode编译Mac OSX App时报错："Garbage Collection is not supported" 的解决办法：

1. 不需要迁移到ARC仍然可以编译通过

"If your project is imported from Xcode 3.x and you want to use ARC, you will have the following error at compile time :

To get rid of this, edit the project and remove anything you see under GCC_ENABLE_OBJC_GC.

This will remove the -fobjc-gc parameter from the gcc commands and you will be able to use the smart ARC." Ref[2]

2. Mac Apps不能再使用garbage collection

"Beginning May 1, 2015, new Mac apps and app updates submitted to the Mac App Store may no

longer use garbage collection, which was deprecated in OS X Mountain Lion. Instead, migrate

your apps to Automatic Reference Counting, using the migration assistant in Xcode to help with this transition.

Apps may continue to use retain/release for manual memory management. For more information,

read theTransitioning to ARC Release Notes."  Ref[1]

Reference

1. Mac Apps That Use Garbage Collection Must Move to ARC

https://developer.apple.com/news/?id=02202015a

2.  MyVeryLittleTricks Miscellaneous

http://myverylittletricks.net/code/?page_id=79

MacDev.GarbageCollectionIsDeprecated-WhenXcodeCompileMacAppProject

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原文地址：http://www.cnblogs.com/cwgk/p/4574005.html