部署到10.6时出现ARC错误 [英] ARC error when deploying to 10.6

问题描述

我有我的应用程序在10.7运行和测试，但后来意识到，我需要它在早期版本上工作。不幸的是，我从一开始就开始这个项目与ARC。

I have my app running and tested on 10.7 but later realized that I needed it to work on earlier versions as well. And unfortunately, I started this project with ARC on from the very beginning.

现在我的构建设置是debug base sdk：10.7，并发布基础sdk：10.6。当我尝试归档我的应用程序，我得到以下错误：

Now my build setup is debug base sdk: 10.7, and release base sdk: 10.6. And when I try to archive my app, I got the following error:

Undefined symbols for architecture x86_64:
"_objc_retain", referenced from:
  +[__ARCLite__ load] in libarclite_macosx.a(arclite.o)
  -[AppDelegate applicationDidFinishLaunching:] in AppDelegate.o
  -[AppDelegate managedObjectModel] in AppDelegate.o
  -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  -[AppDelegate managedObjectContext] in AppDelegate.o
  -[AppDelegate windowWillReturnUndoManager:] in AppDelegate.o
  -[AppDelegate saveAction:] in AppDelegate.o
  ...
 (maybe you meant: _objc_retainedObject)
"_objc_release", referenced from:
  -[AppDelegate applicationDidFinishLaunching:] in AppDelegate.o
  -[AppDelegate applicationFilesDirectory] in AppDelegate.o
  -[AppDelegate managedObjectModel] in AppDelegate.o
  -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  -[AppDelegate managedObjectContext] in AppDelegate.o
  -[AppDelegate windowWillReturnUndoManager:] in AppDelegate.o
  -[AppDelegate saveAction:] in AppDelegate.o
  ...
"_objc_retainAutoreleasedReturnValue", referenced from:
  -[AppDelegate applicationFilesDirectory] in AppDelegate.o
  -[AppDelegate managedObjectModel] in AppDelegate.o
  -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  -[AppDelegate managedObjectContext] in AppDelegate.o
  -[AppDelegate windowWillReturnUndoManager:] in AppDelegate.o
  -[AppDelegate saveAction:] in AppDelegate.o
  -[AppDelegate applicationShouldTerminate:] in AppDelegate.o
  ...
"_objc_autoreleaseReturnValue", referenced from:
  -[AppDelegate applicationFilesDirectory] in AppDelegate.o
  -[AppDelegate managedObjectModel] in AppDelegate.o
  -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  -[AppDelegate managedObjectContext] in AppDelegate.o
  -[AppDelegate windowWillReturnUndoManager:] in AppDelegate.o
  -[MainWindowController viewForTag:] in MainWindowController.o
  -[MainWindowController tableView:objectValueForTableColumn:row:] in MainWindowController.o
  ...
"_objc_storeStrong", referenced from:
  -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  -[AppDelegate saveAction:] in AppDelegate.o
  -[AppDelegate applicationShouldTerminate:] in AppDelegate.o
  -[AppDelegate .cxx_destruct] in AppDelegate.o
  -[MainWindowController init] in MainWindowController.o
  -[MainWindowController viewForTag:] in MainWindowController.o
  -[MainWindowController showUserFinderView:] in MainWindowController.o
  ...
"_objc_retainAutoreleaseReturnValue", referenced from:
  +[MainWindowController sharedInstance] in MainWindowController.o
  -[FileMetaData getFileName] in FileMetaData.o
  -[FileMetaData getLastHash] in FileMetaData.o
  -[FileMetaData getCreationDate] in FileMetaData.o
  -[FileMetaData getLastModified] in FileMetaData.oe
  -[FileMetaData getLocalPath] in FileMetaData.o
  ...
"_objc_autorelease", referenced from:
  -[SBJsonParser objectWithString:error:] in SBJsonParser.o
  -[SBJsonTokeniser getStringToken:] in SBJsonTokeniser.o
  -[SBJsonTokeniser getNumberToken:] in SBJsonTokeniser.o
  -[SBJsonUTF8Stream getRetainedStringFragment:] in SBJsonUTF8Stream.o
  -[SBJsonWriter stringWithObject:error:] in SBJsonWriter.o
"_objc_retainAutorelease", referenced from:
  -[SBJsonTokeniser getStringToken:] in SBJsonTokeniser.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

它看起来像ARC的问题，但我不知道从哪里开始修复这。有什么建议么？感谢。

It looks like an issue with ARC, but I have no clue where to start on fixing this. Any suggestions? Thanks.

推荐答案

您需要将SDK设置为10.7 - 但是您可以将部署目标设置为10.6。虽然在此问题中有详细说明，但有一些注意事项：如何部署启用ARC的雪豹

You need to set the SDK to 10.7 - but you can set the Deployment target to 10.6. There are some caveats though detailed in this question: How to deploy to Snow Leopard with ARC enabled

这篇关于部署到10.6时出现ARC错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！