CODEWITHSUNDEEP
xcodeswiftframeworksstatic-librariesdylib
FreaknBigPanda
FreaknBigPanda

Reputation: 1127

Why do I have to embed my libraries inside my applications binary for them to work?

So I followed this tutorial:

http://locomoviles.com/ios-tutorials/create-ios-cocoa-touch-framework-using-xcode/

Everything went fine except when I went to run the program I got the following error:

> dyld: Library not loaded:
> @rpath/SwiftFramework.framework/SwiftFramework   Referenced from:
> /Users/bluke/Library/Developer/CoreSimulator/Devices/40677D10-F22B-4AE4-B767-06439AB7887A/data/Containers/Bundle/Application/8C6A5F76-C666-4B69-9353-A0ABD7DA085B/UseFramework.app/UseFramework
> Reason: image not found

I was able to solve this problem by adding the framework as an embedded binary, but I don't understand why this was needed to solve the problem.

I thought that the framework would be included in my application bundle as a dynamically linked library (i.e. not embedded in my application's binary directly) and then linked at run time. Is this assumption incorrect?

Just in case my question was unclear, I've added the following pictures.

This is what was producing the error:

This is what was producing the error

If I add the framework to the embedded binaries it works:

This works

Upvotes: 2

Views: 671

Answers (2)

zaph
zaph

Reputation: 112857

This allows apps coded in Swift to run on devices running a version of iOS pre-dating Swift (earlier than iOS8).

Non-Apple frameworks can be embedded on iOS8 and above only.

It is also nice to add a prefix the the name identifying the developer organization so as to avoid comflicts and confusion. "SwiftFramework" looks so much like an Apple framework.

Upvotes: 1

Caleb
Caleb

Reputation: 124997

I thought that the framework would be included in my application bundle as a dynamically linked library (i.e. not embedded in my application's binary directly) and then linked at run time. Is this assumption incorrect?

Yes, it's incorrect. iOS apps link 3rd party frameworks statically, not dynamically. This prevents apps from downloading and dynamically linking code that hasn't been vetted by the app store review process.

Upvotes: 1

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