dyld: Library not loaded: @rpath/libswiftCore.dylib

For me none of the previous solutions worked. We discovered that there is an "Always Embed Swift Standard Libraries" flag in the Build Settings that needs to be set to YES. It was NO by default!

Build Settings > Always Embed Swift Standard Libraries

After setting this, clean the project before building again.

For keen readers some explanation The most important part is:

set the Embedded Content Contains Swift Code (EMBEDDED_CONTENT_CONTAINS_SWIFT) build setting to YES in your app as shown in Figure 2. This build setting, which specifies whether a target's product has embedded content with Swift code, tells Xcode to embed Swift standard libraries in your app when set to YES.

https://i.stack.imgur.com/Q6cAf.png

The flag was formerly called Embedded Content Contains Swift Code

Surprisingly enough, all i did was "Clean" my project (shift+cmd+K) and it worked. Did seem to be related to the certificate though.

I started getting this error when I removed:

@executable_path/Frameworks

from Runpath Search Paths in my build settings. Replacing it fixed everything up again (thank goodness for source control!)

I don't know how it got there, but it appears to be needed for a binary to find its embedded Swift runtime.

https://i.stack.imgur.com/1OKJo.png

In Xcode 8 the option for Embedded Content Contains Swift Code option is no longer available.

It has been renamed to "Always Embed Swift Standard Libraries = YES"

https://i.stack.imgur.com/KKhcS.png

Xcode 13 here (13.1 with react-native).

Created a clean react-native project and saw /usr/lib/swift as an entry in Runpath Search Paths.

https://i.stack.imgur.com/dsfY7.png

After adding that, my project finally ran without crashing!

Nothing helped from what was suggested before.

I think it's a bug when certificates are generated directly from Xcode. To resolve (at least in Xcode 6.1 / 6A1052d):

go to the Apple Developer website where certificates are managed: https://developer.apple.com/account/ios/certificate/certificateList.action select your certificate(s) (which should show "Managed by Xcode" under "Status") and "Revoke" it follow instructions here to manually generate a new certificate: https://developer.apple.com/library/ios/documentation/IDEs/Conceptual/AppDistributionGuide/MaintainingCertificates/MaintainingCertificates.html#//apple_ref/doc/uid/TP40012582-CH31-SW32 go to Xcode > Preferences > Accounts > [your Apple ID] > double-click your team name > hit refresh button to update certificates and provisioning profiles

I was having this issue with running my Swift tests (but not my app). It turns out that the test needed to have more than @executable_path/Frameworks in it's Runpath Search Paths build setting for the test target. Setting the Runpath Search Paths to the following worked a charm for me:

$(inherited)
@executable_path/Frameworks
@loader_path/Frameworks

OK, sharing here another cause of this error. It took me a few hours to sort this out.

In my case the trust policy of my certificate in Keychain Access was Always Trust, changing it back to defaults solved the problem.

In order to open the certificate settings window double click the certificate in the Keychain Access list of certificates.

https://i.stack.imgur.com/qOuLy.png

This issue occurs again in Xcode 10.2. You must download and install the following package from Apple. It provides Swift 5 Runtime Support for Command Line Tools.

https://support.apple.com/kb/DL1998?locale=en_US

You have to set the Runpath Search Paths to @executable_path/Frameworks as showed in the following screenshot of Build Settings:

https://i.stack.imgur.com/JMuyr.jpg

If you have any embedded frameworks made in Swift, than you can set to YES the Build Options Embedded Content Contains Swift Code.

I think Apple has already summarized it under Swift app crashes when trying to reference Swift library libswiftCore.dylib

Cited from Technical Q&A QA1886:

Swift app crashes when trying to reference Swift library libswiftCore.dylib. Q: What can I do about the libswiftCore.dylib loading error in my device's console that happens when I try to run my Swift language app? A: To correct this problem, you will need to sign your app using code signing certificates with the Subject Organizational Unit (OU) set to your Team ID. All Enterprise and standard iOS developer certificates that are created after iOS 8 was released have the new Team ID field in the proper place to allow Swift language apps to run. Usually this error appears in the device's console log with a message similar to one of the following:

[....] [deny-mmap] mapped file has no team identifier and is not a platform binary:
/private/var/mobile/Containers/Bundle/Application/5D8FB2F7-1083-4564-94B2-0CB7DC75C9D1/YourAppNameHere.app/Frameworks/libswiftCore.dylib

Dyld Error Message:
  Library not loaded: @rpath/libswiftCore.dylib

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x0000000120021088
Triggered by Thread: 0

Referenced from: /private/var/mobile/Containers/Bundle/Application/C3DCD586-2A40-4C7C-AA2B-64EDAE8339E2/TestApp.app/TestApp
Reason: no suitable image found. Did find:
/private/var/mobile/Containers/Bundle/Application/C3DCD586-2A40-4C7C-AA2B-64EDAE8339E2/TestApp.app/Frameworks/libswiftCore.dylib: mmap() error 1 at address=0x1001D8000, size=0x00194000 segment=__TEXT in Segment::map() mapping /private/var/mobile/Containers/Bundle/Application/C3DCD586-2A40-4C7C-AA2B-64EDAE8339E2/TestApp.app/Frameworks/libswiftCore.dylib
Dyld Version: 353.5

The new certificates are needed when building an archive and packaging your app. Even if you have one of the new certificates, just resigning an existing swift app archive won’t work. If it was built with a pre-iOS 8 certificate, you will need to build another archive. Important: Please use caution if you need to revoke and setup up a new Enterprise Distribution certificate. If you are an in-house Enterprise developer you will need to be careful that you do not revoke a distribution certificate that was used to sign an app any one of your Enterprise employees is still using as any apps that were signed with that enterprise distribution certificate will stop working immediately. The above only applies to Enterprise Distribution certificates. Development certs are safe to revoke for enterprise/standard iOS developers.

As the AirSign guys state the problem roots from the missing OU attribute in the subject field of the In-House certificate.

Subject: UID=269J2W3P2L, CN=iPhone Distribution: Company Name, OU=269J2W3P2L, O=Company Name, C=FR

I have an enterprise development certificate, creating a new one solved the issue.

Let's project P is importing custom library L, then you must add L into

P -> Build Phases -> Embed Frameworks -> +. That works for me.

https://i.stack.imgur.com/uJCaE.png

The most easy and easy to ignored way : clean and rebuild.

This solved the issue after tried the answers above and did not worked.

I was having the same problem after moving to a new mac, and after hours, trying all the suggested answers in the questions, none of this worked for me.

The solution for me was installing this missing certificate. http://developer.apple.com/certificationauthority/AppleWWDRCA.cer

Found the answer here. https://stackoverflow.com/a/14495100/976628

This error message can also be caused when upgrading Xcode (and subsequently to a new version of Swift) and your project uses a framework built/compiled with an older/previous version of Swift.

In this case rebuilding the framework and re-adding it will fix the problem.

Change Copy Pods Resources for the target from:

"${SRCROOT}/Pods/Target Support Files/Pods-Wishlist/Pods-Wishlist-resources.sh"

to:

"${SRCROOT}/Pods/Target Support Files/Pods-Wishlist/Pods-Wishlist-frameworks.sh"

I solved by deleting the derived data and this time it worked correctly. Tried with Xcode 7.3.1GM

After having tried out everything, I finally found out, that the build seems not always include every detail again and again. Maybe for speeding up the process... In order to ensure WHOLE packaging before running on a device, make a Clean first: Shift-Cmd-K. Then build with: Cmd-B. After that run it on your device. Easy. Kind regards to all you nice guys in that place!

In my case, it was just the name of my target :

I renamed it like this : MyApp.something and the same issue appeared. But I saw in the build Settings window, my product module name has been changed like this MyApp-something. So, I removed the dot in my target name (MyAppSomething) and the issue was gone.

For me, having tried everything with no success, what worked was to remove @executable_path/Frameworks from the Packaging section (don't know how it came to be in there in the first place)

https://i.stack.imgur.com/dqPWZ.png

We had a unity project that creates an xcode project that includes libraries that use swift.

We tried each and every reasonable suggestion on this thread.

Nothing worked. Code runs fine on new devices, and crashes on iOS<=12

It seems that swift is so smart, that even if you set it to "ALWAYS_EMBED_SWIFT_LIBRAIES"="YES" it does not include the swift libraries.

What actually solved the problem for us is to include a dummy swift file in the project. The file must contain calls to dispatch, foundation libraries.

Apparently this hints mighty-xcode to force include the libraries, but this time for real.

Here is the dummy file we added that made it work:

import Dispatch
import Foundation


class ForceSwiftInclusion {

   init() {

    // Force dispatch library.
    DispatchQueue.main.async {
      print("something")
    }

    // Force foundation library.
    let uuid = UUID().uuidString
    print("\(uuid)")

   }
}

For unity, also add project.AddBuildProperty(target, "SWIFT_VERSION", "Swift 5"); to your post processing for creating the xcode project.

None of the solutions worked for me. Restarting the phone fixed it. Strange but it worked.

none of these solutions seemed to work but when I changed the permission of the world Wide Developer cert to Use System defaults then it worked. I have included the steps and screenshots in the link below

I would encourage you to log the ticket in apple bug report as mentioned here as Apple really should solve this massive error: https://stackoverflow.com/a/41401354/559760

What worked for me in Xcode 11 was going to General -> Frameworks, Libraries, and Embedded Content and changing the "Embed" option for the framework in question to "Embed & Sign"

https://i.stack.imgur.com/R5Ec6.png

Xcode 7.2, iOS 9.2 on one device, 9.0 on other. Both had the error. No idea what changed that caused it, but the solutions above for the WWDR were correct for me. Install that cert and problem solved.

https://forums.developer.apple.com/message/43547 https://forums.developer.apple.com/message/84846

There are lot's of answers there but might be my answer will help some one.

I am having same issue, My app works fine on Simulator but on Device got crashed as I Lunches app and gives error as above. I have tried all answers and solutions . In My Case , My Project I am having multiple targets .I have created duplicate target B from target A. Target B works fine while target A got crashed. I am using different Image assets for each target. After searching and doing google I have found something which might help to someone.

App stop crashing when I change name of Launch images assets for both apps . e.g Target A Launch Image asset name LaunchImage A . Target B Lunch Image asset name LaunchImage B and assigned properly in General Tab of each target . My Apps works fine.

For me building a MacOS command line Swift app that depended on 3rd party Swift libs (e.g. SQLite) none of the above solutions seemed to work. What did work was directly adding the following path to my Runpath Search Paths in the Build Settings:

/Applications/Xcode.app/Contents//Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx/

Doing that did give a warning at runtime saying that Xcode had found 2 versions of libswiftCore - which makes sense. Except that not including that line resulted in Xcode not finding any versions of libswiftCore.

Anyway, that'll do for me even if it doesn't seem right - my app is just a utility that I'm not intending to distribute and at least it runs now!

I have multiple version of Xcode installed at the same time. The framework was built with a newer version of Xcode. The app that I tried to compile was with an older version of Xcode. When I cleaned and compiled both the framework and the app with the same version of Xcode then things worked.

I started getting this similar error for testing adding S3 file using AWS services. Below was the error. dyld: Library not loaded: @rpath/AWSAutoScaling.framework/AWSAutoScaling

I searched a lot and above solutions are also not helpful for me. Below link helped me to solve this issue.

https://forums.developer.apple.com/thread/21292

Which says to fix this issue by re-downloading the WWDR (Apple Worldwide Developer Relations Certification Authority).