CODEWITHSUNDEEP
iosswiftstatic-librariesswift4xcode9.3
Vishal Gabani
Vishal Gabani

Reputation: 421

It gives errors when using Swift Static library with Objective-C project

I need to make swift static library for my requirement. I made swift static library which uses swift and Obj-c code. I have included Obj-c files via bridge file. I am able to compile swift static library without any error and get libMySwift.a file. I use Xcode9.3 with Swift4 to compile library.

I include libMySwift.a in obj-c project and also included obj-c compatible header to access my lib in the project. When I try to compile the project it give below warning and more than 200 errors. 

Auto-Linking library not found for -lswiftSwiftOnoneSupport
Auto-Linking library not found for -lswiftCore
Auto-Linking library not found for -lswiftQuartzCore
Auto-Linking library not found for -lswiftCoreImage
Auto-Linking library not found for -lswiftCoreGraphics
Auto-Linking library not found for -lswiftObjectiveC
Auto-Linking library not found for -lswiftDispatch
Auto-Linking library not found for -lswiftMetal
Auto-Linking library not found for -lswiftFoundation
Auto-Linking library not found for -lswiftUIKit
Auto-Linking library not found for -lswiftDarwin
Auto-Linking library not found for -lswiftCoreFoundation

Please let me know if I am missing any steps or need to add anything.

Upvotes: 35

Views: 26315

Answers (6)

msaba
msaba

Reputation: 76

I just follow AlVelig steps and still can't build the app, after making some hours on it finally works for me: in Build, Setting -> Build Active Architecture Only -> Select yes for Release too (it was No)

Build Active Architecture Only:

enter image description here

Upvotes: 0

iHTCboy
iHTCboy

Reputation: 2797

If create empty "Swift File" errors

This method may be useful, can try ： https://blog.cpming.top/p/react-native-0-62-undefined-symbol

Upvotes: 0

Chinedu Ofor
Chinedu Ofor

Reputation: 767

  1. Right click on your project name and select new file
  2. Create an empty "Swift File" called File.Swift
  3. It will prompt to create a bridge header file then click create

Upvotes: 0

joriki
joriki

Reputation: 651

This answer worked for me: Add $(TOOLCHAIN_DIR)/usr/lib/swift/$(PLATFORM_NAME) to the library search paths.

Upvotes: 0

AlVelig
AlVelig

Reputation: 2009

An update to Alex's answer:

In my case it was a React-Native project after adding a Swift Pods library. Maybe just the step 2 can work:

  1. Adding a new Swift file and a Brigde header:

1) File -> New -> File <code>File -> New -> File</code>

2) Select Swift File Select <code>Swift File</code>

3) Confirm Create Bridging Header enter image description here

  1. Go to Build Settings and set Always Embed Swift Standard Libraries to YES Always Embed Swift Standard Libraries

Upvotes: 68

Alex Roslyakov
Alex Roslyakov

Reputation: 866

I've got the same error on my demo project when added first Swift file in my pod compiled as static library. For me solution was simple - just added empty Swift file to my demo project which was previously in Objective-C only. This solved all linker errors.

Upvotes: 68

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