[AdMob] Errors linking AdMob

[duzzell]

This is a continuation of the post I began in the Discussions section.

Thank you for your help.

I amusing Delphi 12.2, ios SDK 17.5, xcode 15.4, iPhone 7, ios 15.8.7.

I re-downloaded and installed IOS-Arm64-AdMobFrameworks-v1.0.0.zip. I am still getting the following errors when I compile for ios:

Error: "__swift_FORCE_LOAD_$_swift_Builtin_float", referenced from:      __swift_FORCE_LOAD_$_swift_Builtin_float_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_Builtin_float_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swift_errno", referenced from:      __swift_FORCE_LOAD_$_swift_errno_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_errno_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swift_math", referenced from:      __swift_FORCE_LOAD_$_swift_math_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_math_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swift_signal", referenced from:      __swift_FORCE_LOAD_$_swift_signal_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_signal_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swift_stdio", referenced from:      __swift_FORCE_LOAD_$_swift_stdio_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_stdio_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swift_time", referenced from:      __swift_FORCE_LOAD_$_swift_time_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swift_time_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swiftsys_time", referenced from:      __swift_FORCE_LOAD_$_swiftsys_time_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swiftsys_time_$_GoogleMobileAds)
  Error: "__swift_FORCE_LOAD_$_swiftunistd", referenced from:      __swift_FORCE_LOAD_$_swiftunistd_$_GoogleMobileAds in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADMarketplaceKitSignals.o);
     (maybe you meant: __swift_FORCE_LOAD_$_swiftunistd_$_GoogleMobileAds)
  Error: "_compression_encode_buffer", referenced from:      _GADBrotliCompressedDataFromString in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADDataCompression.o);

[DelphiWorlds]

If, after updating DW.iOSapi.SwiftCompat.pas (in the API folder of Kastri), which I pushed a changed for recently, you are still receiving those errors, it may be due to a problem with the step of importing the Swift compatibility files, as per the iOS section in the demo readme, i.e. this part.

Please make sure you follow those instructions very carefully, and verify that the files are in the correct locations.

[duzzell]

I have followed the instructions very carefully and verified that the files are in their correct locations. I am now getting a new error:

[DCC Error] E2597 ld: warning: directory not found for option '-L\source'
ld: file not found: /usr/lib/swift/libswiftunistd.dylib

In the Swift compatibility files downloaded from the Mac I could not find a file by the name libswiftunistd.dylib in the directories swift, swift-5.0 or swift-5.5. Nor could I find that file on the Mac on the paths I added to the SDK manager.

[DelphiWorlds]

Please update the linker options (Building > Delphi Compiler > Linking in Project Options) to this value:

-ObjC -rpath /usr/lib/swift -weak_library /usr/lib/swift/libswift_Builtin_float.dylib -weak_library /usr/lib/swift/libswift_Concurrency.dylib -weak_library /usr/lib/swift/libswift_errno.dylib -weak_library /usr/lib/swift/libswift_math.dylib -weak_library /usr/lib/swift/libswift_signal.dylib -weak_library /usr/lib/swift/libswift_stdio.dylib -weak_library /usr/lib/swift/libswift_StringProcessing.dylib -weak_library /usr/lib/swift/libswift_time.dylib -weak_library /usr/lib/swift/libswiftDataDetection.dylib -weak_library /usr/lib/swift/libswiftFileProvider.dylib -weak_library /usr/lib/swift/libswiftObservation.dylib -weak_library /usr/lib/swift/libswiftOSLog.dylib -weak_library /usr/lib/swift/libswiftunistd.dylib -weak_library /usr/lib/swift/libswiftXPC.dylib

[duzzell]

The updated linker options changed the error to

[DCC Error] E2597 ld: warning: directory not found for option '-L\source'
ld: file not found: /usr/lib/swift/libswift_Builtin_float.dylib

I've double-checked to make sure that libswift_Builtin_float is included in the list of weak-linked libraries in my project options. It is present, the first library named in the list. The linker options value I'm using is identical to the value given in your previous message.

[DelphiWorlds]

I do not fully understand how -weak_library is supposed to work. It may be that you need to use an iOS SDK of 18.0 or later. You could try commenting out any xxxLoader lines in DW.iOSapi.SwiftCompat.pas that have a comment of // iOS 18.0 at the end of them

[duzzell]

Upgrading to Xcode 16 cleared the original error:

[DCC Error] E2597 ld: warning: directory not found for option '-L\source'
ld: file not found: /usr/lib/swift/libswiftunistd.dylib

I'm seeing a new error now:

Undefined symbols for architecture arm64:
    Error: "_compression_encode_buffer", referenced from:      _GADBrotliCompressedDataFromString in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADDataCompression.o);

I've confirmed that GADDataCompression.o is present in the GoogleMobileAds framework. I tried adding a bunch of linker options to try and force the linker to find GADDataCompression.o:

-framework Adsupport 
-framework AVFoundation 
-framework CoreTelephony 
-framework StoreKit
-framework SystemConfiguration 
-framework MessageUI 
-framework JavaScriptCore 
-framework CoreMotion 
-force_load "C:\Users\david\Documents\Embarcadero\Studio\SDKs\iPhoneOS18.0.sdk\System\Library\Frameworks\GoogleMobileAds.framework/GoogleMobileAds" 
-lz -lsqlite3 
-framework WebKit 
-framework UserMessagingPlatform

Also deleting the PAServer cache on the Mac and re-downloading the SDK.
None of that helped.
I created a new project for ios containing only the AdmobBannerAd on an otherwise empty form and repeated all the Kastri instructions to configure it. That project still generates the undefined symbol error.

Do you have ideas of things I can try?.

Thanks

[DelphiWorlds]

Undefined symbols for architecture arm64:
    Error: "_compression_encode_buffer", referenced from:      _GADBrotliCompressedDataFromString in Frameworks/GoogleMobileAds.framework/GoogleMobileAds(GADDataCompression.o);

_compression_encode_buffer is in the Compression framework in the iOS SDK, but I'm puzzled as to why your project needs it when normally the demo does not. You could try adding the framework using Delphi's SDK Manager.

[duzzell]

LOL you and Gemini both tell me to add the Compression framework to my project, but I can't find a framework named 'Compression' on the mac. When I just type the name Compression into the SDK manager to add it, nothing gets added to the list of frameworks on my windows machine.

Can you tell me more about how to add the Compression framework?

Thanks

[DelphiWorlds]

Try using:

-lcompression

In the linker options

[duzzell]

ld: library not found for both -lcompression and -lCompression.

[DelphiWorlds]

Can you indicate which iOS SDK is being used?

[duzzell]

iPhoneOS 18.0

[DelphiWorlds]

Not sure what is causing the issue. I assume you're using the original DW.iOSapi.SwiftCompat.pas?