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Re: Symbol not found _OBJC_CLASS_ when launching app in 64 bit
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Re: Symbol not found _OBJC_CLASS_ when launching app in 64 bit


  • Subject: Re: Symbol not found _OBJC_CLASS_ when launching app in 64 bit
  • From: Nick Blievers <email@hidden>
  • Date: Sun, 21 Jun 2015 16:04:40 -0500
  • Acceptlanguage: en-US
  • Thread-topic: Symbol not found _OBJC_CLASS_ when launching app in 64 bit

It sounds like your run time checks aren’t right. Can you show us how you have done it? Are you using NSClassFromString()?

Nick

> On 22 Jun 2015, at 6:49 am, Eyal Redler <email@hidden> wrote:
>
> My fat 32/64 Mac app is crashing at launch on 10.6 as follows:
>
> Dyld Error Message:
> Symbol not found: _OBJC_CLASS_$_NSDataDetector
> Referenced from: /Applications/Mellel.app/Contents/MacOS/MyApp
> Expected in: /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
> in /Applications/MyApp.app/Contents/MacOS/MyApp
>
> 1. I’m aware that NSDataDetector is not available on 10.6 and I’m checking at run time to see if I can use it or if I need to use my home-grown stuff.
> 2. Up until recently the app was 32 bit only, and ran just fine on 10.6
> 3. I’ve just added 64 bit support so I suspected that the problem was related.
>
> I’ve asked the users to force the app to run in 32 bit mode and the problem is indeed gone so I guess it’s safe to conclude the problem only happens when you run in 64-bit mode (and possibly only on 10.6)
>
> What am I doing wrong here?
>
> Thanks in Advance,
>
>
> Eyal Redler
> ------------------------------------------------------------------------------------------------
> "If Uri Geller bends spoons with divine powers, then he's doing it the hard way."
> --James Randi
> www.eyalredler.com
>
>
>
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  • Follow-Ups:
    • Re: Symbol not found _OBJC_CLASS_ when launching app in 64 bit
      • From: Eyal Redler <email@hidden>
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 >Symbol not found _OBJC_CLASS_ when launching app in 64 bit (From: Eyal Redler <email@hidden>)

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