无意中修改了一个iOS SDK头文件,现在我无法在模拟器中编译

Question

我不知道我是如何修改iOS SDK文件的,但Xcode说我做了.这是他们报道的内容.

fatal error: file '/Applications/Xcode 2.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIFontDescriptor.h' has been modified since the precompiled header '/Users/m/Library/Developer/Xcode/DerivedData/ModuleCache/24CDWDK5BTYJE/UIKit.pcm' was built
note: after modifying system headers, please delete the module cache at '/Users/m/Library/Developer/Xcode/DerivedData/ModuleCache/24CDWDK5BTYJE'
1 error generated.

我试图寻找这个DerivedData但不能.我也去了组织者删除它并做了一个干净,即使在那之后,没有运气.

如何将此UIFontDescriptor.h恢复为其原始格式？

Answer 1

删除pcm文件

rm"/Users/m/Library/Developer/Xcode/DerivedData/ModuleCache/24CDWDK5BTYJE/UIKit.pcm"

然后

清洁项目(Cmd + Shift + K)

问题解决了

Answer 2

我通过删除ModuleCache文件夹的全部内容来修复此问题:

rm -rf ~/Library/Developer/Xcode/DerivedData/ModuleCache/*