"error: underlying Objective-C module <module> not found"

With the release of iOS 8 and Xcode 6, it is now possible to build dynamic iOS frameworks. It seems that Apple *still* hasn't documented this topic as of yet, leaving developers to fend for themselves against the deadly, cryptic errors of Xcode, one particularly nasty:

"error: underlying Objective-C module <module> not found"

I was able to fix this issue. If you are importing a module that links any Objective-C frameworks, you need to import those Objective-C frameworks in your module too. That shouldn't add to your bundle size if you are not using a static library.

I imported all of the frameworks needed for Parse into one module "Module A". In order to import "Module A" into "Module B", I had to add all of the required Parse frameworks and "Module A" to my Linked Libraries for "Module B".

Apple does not promote distribution of iOS frameworks as of Xcode 6 ([referring to this SO post][1]):

> Xcode 6 does not support building distributable Swift frameworks at
> this time and that Apple likely won't build this functionality into
> Xcode until its advantageous for them to do so.

However, it is not impossible to build one:

- Go to the **Product** menu.
- Click on **Build For**.
- Select **Testing**.

And as always, trashing Xcode's `DerivedData` folder (`rm -rf ~/Library/Developer/Xcode/DerivedData`) usually solves any trivial problems that may arise.


[1]:

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