dyld: Library not loaded: @rpath/libswiftCore.dylib
I am trying to run a Swift app on my iPhone 4s. It works fine on the simulator, and my friend can successfully run it on his iPhone 4s. I have iOS 8 and the official release of Xcode 6.
I have tried
$(inherited) @executable_path/Frameworks Below is the error in entirety
dyld: Library not loaded: @rpath/libswiftCore.dylib
Referenced from: /private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/AppName.app/AppName
Reason: no suitable image found. Did find:
/private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/AppName.app/Frameworks/libswiftCore.dylib: mmap() error 1 at
address=0x008A1000, size=0x001A4000 segment=__TEXT in Segment::map() mapping
/private/var/mobile/Containers/Bundle/Application/LONGSERIALNUMBER/APPLICATION_NAME/Frameworks/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.
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.
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