Objective-C ARC和Legacy Runtime编译错误 [英] Objective-C ARC and Legacy Runtime compiling error

问题描述

我试图用Xcode 4.6编译源代码，为32位架构，但得到这个错误：

I'm trying to compile sources with Xcode 4.6, for 32bit architecture, but getting this error:

error: -fobjc-arc is not supported on platforms using the legacy runtime
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1

有什么问题？

推荐答案

您正在将ARC（自动引用计数）与较旧的Objective-C 1.0运行时（不支持ARC）混合。

You're mixing ARC (automatic reference counting) with the older Objective-C 1.0 runtime, which does not support ARC.

OSX上的32位应用程序， 1.0运行时，因此您必须为您的项目禁用ARC，并使用手动引用计数。

32-bit apps on OSX, automatically use the 1.0 Runtime, so you'll have to disable ARC for your project, and use Manual Reference Counting.

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