Xcode：“没有这样的模块”嵌入式框架(Xcode: “No such module” embedded framework)

 我目前在我的项目中有3个嵌入式框架： 
 
 
 
 PersistenceLayer （仅限Swift） 
 
 
 TransportLayer （仅限Swift） 
 
 
 Socket （Objc） 
 
 
 PersistenceLayer和Socket都不引用它们之外的任何东西。 但是TransportLayer导入PersistenceLayer和Socket 。 奇怪的是，我可以在导入后使用 PersistenceLayer对象： 
 
import PersistenceLayer

struct User : Model {
  ...
}
 
 Model在PersistenceLayer定义，Xcode允许我按正常使用它。 但是，当我尝试构建TransportLayer ，我得到错误： No such Modul 'Persistencelayer' 。 所以Xcode识别模块在那里，但在构建时以某种方式“丢失”它。 
 
 令人抓狂的是，这曾经起作用。 在某些时候，一些事情发生了变化，我无法弄清楚是什么。 重要的是要注意我在一个有多个开发人员的项目上工作，并且我已经merged了更改。 但是，在合并之前切换到提交不起作用。 我也尝试过： 
 
 
 
 将$(SRCROOT) （递归）添加到框架搜索路径 
 
 
 从ModuleCache目录中删除所有内容 
 
 
 清洁项目 
 
 
 清理构建文件夹 
 
 
 我怀疑在我的项目设置中发生了一些变化，但我无法弄清楚是什么，我检查了git差异并没有帮助（除了正常的文件添加之外，项目中没有任何真正改变的东西。 
 
 此外， TransportLayer成功导入并使用Socket 。 如果我删除对PersistenceLayer的引用但保留对Socket所有引用，我可以构建TransportLayer。 
 
 有谁知道为什么会发生这种情况或如何解决它？ 
 
 更新 
 
 好的，所以我从目标中删除了“违规”文件，以确保Socket正在工作（它是），然后将文件重新添加到目标（完全通过重置git）。 它现在建立...因为这是有道理的。 但我尝试将方案从iOS Device更改为模拟器，它不再构建，但我得到了不同的错误： 
 
 
 
 在module.modulemap中：未找到Header PersistenceLayer-Swift.h 
 
 
 另外： Could not build Objective-C module 'Persistence Layer' 
 
 
 这感觉就像我在追逐随机错误...... 

I currently have 3 Embedded Frameworks in my project:
 
 
 
PersistenceLayer (Swift only)
 
 
TransportLayer (Swift Only)
 
 
Socket (Objc)
 
 
Both PersistenceLayer and Socket don't reference anything outside themselves. However TransportLayer imports PersistenceLayer and Socket. Oddly, I can use PersistenceLayer objects after importing:
 
import PersistenceLayer

struct User : Model {
  ...
}
 
Model is defined in PersistenceLayer and Xcode lets me use it per normal. However, when I try to build TransportLayer, I get the error: No such Modul 'Persistencelayer'. So Xcode recognizes the module is there, but somehow "looses" it when it builds.
 
What's maddening is that this used to work. At some point something changed and I can't figure out what. It's important to note that I work on a project with multiple developers and I have merged in changes. However switching to a commit prior to the merge didn't work. I've also tried:
 
 
 
Adding $(SRCROOT) (recursive) to Framework Search Paths
 
 
Deleting everything out of ModuleCache directory
 
 
Clean project
 
 
Clean Build Folder
 
 
I suspect that something changed in my project settings but I can't figure out what and I've checked the git diffs didn't help (there nothing that really changed in the project aside from the normal file additions.
 
Also, TransportLayer does successfully import and use Socket. I can build the TransportLayer if I remove references to PersistenceLayer but keep all the references to Socket.
 
Does anyone know why this might be occurring or how to fix it?
 
Update
 
Ok, so I removed the "offending" files from the target to make sure Socket was working (it is) and then re-added the files to the target (quite literally by resetting git). It now builds... cause that makes sense. But I tried changing the Scheme from iOS Device to a simulator and it no longer builds, but I'm getting different errors:
 
 
 
in module.modulemap: HeaderPersistenceLayer-Swift.h' not found`
 
 
Also: Could not build Objective-C module 'Persistence Layer'
 
 
This feels like I'm chasing down random errors...

原文：https://stackoverflow.com/questions/31435891