hey guys, I am trying to build a framework from a ...

# kotlin-native

[Cyrille QUÉMIN]

hey guys, I am trying to build a framework from a cinterops that imports another framweork: NearbyMessages from Google
So I install the NearbyMessages framework via cocoapods. NO issues. I defined my cinterops bloc and I can use the generated bindings in Kotlin classes.
I can also publish locally my multiplatform library. But if I decide to export my ios target as a framework, I receive this error:
ld: symbol(s) not found for architecture arm64 this only appears because I added staticLibraries and a libraryPaths in my def file since I noticed that the google framework contains
a native library .a and other frameworks as part of the its internal dependency. I have tried multiple combination of using linkerOpts with -L or -F pointing at the folder where the framework has been imported but nothing works.

I have not been able to find a clear explanation as to how to create correct cinterops with ios framework that contains a static library and multiple indirect dependencies since I suspect that the impossibility
to export this as ios framework is related to my wrong configuration of the cinterops.
Thanks in advance
Def File:

depends = Foundation
language = Objective-C
headers = GNSMessages.h
staticLibraries = NearbyMessages/Libraries/libGNSMessages.a
libraryPaths = /Users/cyrille.quemin/Documents/git/multiplatform-p2p/p2p-common/src/iosMain/dependencies/Pods

Cinterops:

binaries {
                framework("p2p_common") {
                    linkerOpts "-L${podsDir}/NearbyMessages/Libraries"
                }
            }
            compilations.main.cinterops {
                NearbyMessage {
                    defFile "src/iOSMain/c_interop/NearbyMessages.def"
                    includeDirs "${podsDir}/Headers/Public/NearbyMessages"
                    linkerOpts "-F${podsDir}/NearbyMessages/Libraries/"
              }
         }

[svyatoslav.scherbina]

ld: symbol(s) not found for architecture arm64

Is it possible that you have added only simulator variant of static library?

linkerOpts “-F${podsDir}/NearbyMessages/Libraries/”

This line should be moved under framework {.

[Cyrille QUÉMIN]

I also tried with with preset.iosX64, and to move the line under framework like you suggested, but still get the same error at the linking phase : linkP2p_commonDebugFrameworkIOS

[svyatoslav.scherbina]

Could you post the complete error message here?

[Cyrille QUÉMIN]

> Task :p2p-common:linkP2p_commonDebugFrameworkIOS
ld: warning: ignoring file /Users/cyrille.quemin/Documents/git/multiplatform-p2p/p2p-common/src/iOSMain/Libraries/CryptoCocoa.framework/CryptoCocoa, missing required architecture x86_64 in file /Users/cyrille.quemin/Documents/git/multiplatform-p2p/p2p-common/src/iOSMain/Libraries/CryptoCocoa.framework/CryptoCocoa (2 slices)
ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame
Undefined symbols for architecture x86_64:
  "_AVAudioSessionCategoryPlayAndRecord", referenced from:
      l069 in libGNSMessages.a(GNSAudioModem.o)
  "_AVAudioSessionInterruptionNotification", referenced from:
      l018 in libGNSMessages.a(GCPAudioTokenStrategy.o)
      l019 in libGNSMessages.a(GCPAudioTokenStrategy.o)
  "_AVAudioSessionInterruptionTypeKey", referenced from:
      l098 in libGNSMessages.a(GCPAudioTokenStrategy.o)
  "_AVAudioSessionRouteChangeNotification", referenced from:
      l004 in libGNSMessages.a(GNSAudioPlayer.o)
  "_AudioQueueAllocateBuffer", referenced from:
      l009 in libGNSMessages.a(GNSAudioPlayer.o)
      l038 in libGNSMessages.a(GNSAudioRecorder.o)
  "_AudioQueueDispose", referenced from:
      l005 in libGNSMessages.a(GNSAudioPlayer.o)
      l024 in libGNSMessages.a(GNSAudioRecorder.o)
[...]
      l005 in libGNSMessages.a(GNSImage.o)
  "_UIGraphicsBeginImageContextWithOptions", referenced from:
      l005 in libGNSMessages.a(GNSImage.o)
  "_UIGraphicsEndImageContext", referenced from:
      l005 in libGNSMessages.a(GNSImage.o)
  "_UIGraphicsGetCurrentContext", referenced from:
      l005 in libGNSMessages.a(GNSImage.o)
  "_UIGraphicsGetImageFromCurrentImageContext", referenced from:
      l005 in libGNSMessages.a(GNSImage.o)
  "_vDSP_vflt16", referenced from:
      l026 in libGNSMessages.a(GNSAudioRecorder.o)
ld: symbol(s) not found for architecture x86_64
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld invocation reported errors

[Cyrille QUÉMIN]

I remove about 200 lines of detail of what is not found.you can ignore the lines about cryptoCocoa not built for x86

[svyatoslav.scherbina]

Undefined symbols for architecture x86_64:
  "_AVAudioSessionCategoryPlayAndRecord", referenced from:
      l069 in libGNSMessages.a(GNSAudioModem.o)

This error means that libGNSMessages.a depends on AVFoundation, so you should include -framework AVFoundation to your linker options too.

[Cyrille QUÉMIN]

Yes that worked, it removed the line about _AVxxxx

[Cyrille QUÉMIN]

do I have to search for every single error on internet and try to link with the right framework? Is there an efficient way to do this?

[svyatoslav.scherbina]

It is enough to search for the name that is not found, with leading underscore removed.
Apple documentation is likely to be found this way, and it contains the information about system framework to be linked.

[Cyrille QUÉMIN]

I will try that, thnanks a lot

[Cyrille QUÉMIN]

Do you know how to specify non Apple framework with the -framework option? It work fine with Apple framework but I need to add some framework that are not from Apple. I tried relative paths, absolute paths and I keep on having: ld: framework not found GoogleInterchangeUtilities where this displays the argument I put after -framework option

[Cyrille QUÉMIN]

it is ok I found it linkerOpts = -framework AVFoundation -F path/to/my/framework/folder -framework MyFramework works