Linker error -- "framework not found IOBluetooth for architecture x86_64"

[nickjwallin]

Hi,

I tried to integrate card.io into our iOS app by first going the CocoaPods route, and then the manual route ("If you don't use CocoaPods, then").

Going the CocoaPods route, I got the following linker error:

ld: framework not found IOBluetooth for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Going the manual route, it looked promising because everything built. But when I ran the app and tried to do the following...

CardIOPaymentViewController *scanViewController = [[CardIOPaymentViewController alloc] initWithPaymentDelegate:self]; [self presentViewController:scanViewController animated:YES completion:nil];

...the app crashed with the following exception:

Terminating app due to uncaught exception 'CardIO-IncompleteIntegration', reason: 'Please add -ObjC to 'Other Linker Flags' in your project settings. (+[NSObject testForObjCLinkerFlag]: unrecognized selector sent to class 0x1128f0170)'

However, adding -ObjC to 'Other Linker Flags' did not solve the issue. Instead, I am back to square one: I got the IOBluetooth linker error again.

I think this may be related to #186

Any thoughts on this issue?

[bluk]

IOBluetooth seems to be an x86 Mac OS X app framework (not available on iOS; iOS uses CoreBluetooth only). Does your app either in code or in the target build configuration try to reference any IOBluetooth code in any way?

[nickjwallin]

Interesting! Our code actually does reference IOBluetooth! Well, not our code, but a framework we are using. The framework has the following imports:

#ifdef __x86_64__
    #import <Cocoa/Cocoa.h>
    #import <IOBluetooth/objc/IOBluetoothDevice.h>
    #import <IOBluetooth/objc/IOBluetoothSDPUUID.h>
    #import <IOBluetooth/objc/IOBluetoothRFCOMMChannel.h>
    #import <IOBluetoothUI/objc/IOBluetoothDeviceSelectorController.h>

#else
    #import <ExternalAccessory/ExternalAccessory.h>
    #import <UIKit/UIKit.h>
#endif

I guess it assumes that if we are x86_64, then we are a Mac instead of an iOS device. (Sounds like an incorrect assumption to me.)

As a short-term, hacky solution, I can probably modify this framework to remove that behavior, especially since we aren't developing for Macs. However, I only get this linker error when trying to use card.io. Does card.io define x86_64?

[nickjwallin]

Actually, I can't modify the framework as there are binary files that we didn't generate. I look forward to maybe using card.io if there's a way to get around this flag being set!

[bluk]

@nickjwallin Does this only occur in the simulator? If you tried it on a device, does it run?

[josharian]

Going from memory here, try calling a card.io class method (like libraryVersion or whatever it's called) before doing anything else with the rest of the library instead of adding the flag. No promises.

[hehtao]

Try to set "Other Linker Flags" as "-ObjC"