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Editorial Team
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Asked: 2026-05-18T12:15:20+00:00

I’m trying to have printing in my application. While this works, and I can

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I’m trying to have printing in my application.

While this works, and I can indeed print from my application, I would like to be able to run my application on devices that aren’t running iOS 4.2.

Even if I check the version before I run the code.

The method that prints the document has all of the classes that are being used to print.

Whenever I switch the simulator back to 4.1, I get a Symbol not found exception that displays the error:

dyld: Symbol not found: _OBJC_CLASS_$_UIMarkupTextPrintFormatter
Referenced from: /Users/Jack/Library/Application Support/iPhone Simulator/4.1/Applications/794534DB-DB53-42E7-A294-7E78FDD3899B/Documentation.app/Documentation
Expected in: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.1.sdk/System/Library/Frameworks/UIKit.framework/UIKit
in /Users/Jack/Library/Application Support/iPhone Simulator/4.1/Applications/794534DB-DB53-42E7-A294-7E78FDD3899B/Documentation.app/Documentation

I don’t want to discard the users who haven’t upgraded to 4.2.

Any help appreciated.

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1 Answer

  1. Editorial Team

    Which compiler are you using? If you haven’t, you should switch to LLVM GCC or LLVM to support automatic weak linking as described by Marco Arment in Supporting older versions of iOS while using new APIs.

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