“项目名称”是通过优化编译的 - 步进可能表现得很奇怪;变量可能无法使用 [英] 'Project Name' was compiled with optimization - stepping may behave oddly; variables may not be available
问题描述
尝试进入AFNetworking代码会产生以下警告：
Trying to step into AFNetworking code generates following warning:
[Project Name] was compiled with optimization - stepping may behave oddly; variables may not be available.
当然我无法调试代码。具体来说，我正在尝试调试 UIImageView + AFNetworking 类别，这似乎是不可能的。更改代码没有任何效果（尝试 NSLog 等），当尝试进入编译器时转到汇编代码并显示 UIImageView + TVASTAFNetworking 作为类别名称，在代码库中的任何位置都不存在。
And of course I'm not able to debug the code. To be specific I'm trying to debug UIImageView+AFNetworking category which seems impossible. Changing the code has no effect (tried NSLog, etc) and when trying to step in compilers goes to assembly code and shows UIImageView+TVASTAFNetworking as category name which does not exist anywhere in the code base.
使用Xcode 7. iOS 9& 8. Cocoapods（无框架）
Using Xcode 7. iOS 9 & 8. Cocoapods (no Framework)
更新
我忘了提到Optimizer设置为 none 用于发布和调试配置，我实际上使用 Debug config。
UPDATE
I forgot to mention that Optimizer is set to none for both release and debug configuration and I am in fact using Debug config.
更新2
剥离调试符号也关闭。
推荐答案
这已经很长时间但我终于解决了问题。有第三个优化标志 LTO 或链接时间优化，令人惊讶的是没有人在这里提到
和由于某种原因，我也没有注意它。正好在优化级别设置之上，您可以在此处发布的许多屏幕截图中看到。
It's been a long time but I finally solved the issue. There is a third optimization flag LTO or Link Time Optimization and Surprisingly no one have
mentioned it here and for some reason I didn't pay attention to it either. It's right there above the Optimization Level setting as you can see in many screen shots posted here.
总结一下它有3个不同的优化标志要关闭以进行调试：
So to summarize it there are 3 different optimization flags you want to turn off for debugging :
- LLVM链接时间优化（
-flto） - LLVM优化级别（
-O） - Swift编译器优化级别
有关LTO的更多信息：
http://llvm.org/docs/LinkTimeOptimization .html
More information about LTO: http://llvm.org/docs/LinkTimeOptimization.html
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