Re: Symbol not found: ___umoddi3
Re: Symbol not found: ___umoddi3
- Subject: Re: Symbol not found: ___umoddi3
- From: Patrick Mau <email@hidden>
- Date: Sun, 18 Sep 2011 14:26:55 +0200
Hi Patrick
The function you are missing is normally part of libgcc and is called when you do 64-bit interger math on a 32 bit archtecture.
Maybe you are compiling a universal 32/64 bit version and the users that run your app in 64-bit mode do not have that issue.
I don't remember the details of Leopard right now.
Regards
Patrick
On 16.09.2011, at 22:50, patrick machielse wrote:
> I'm running into a strange issue.
>
> We build our app against the 10.7 SDK + 10.5 deployment target using llvm.
>
> _Some_ of our users on 10.5.8 encounter the following problem with our binary:
>
> OS Version: Mac OS X 10.5.8 (9L31a)
> Exception Type: EXC_BREAKPOINT (SIGTRAP)
> Exception Codes: 0x0000000000000002, 0x0000000000000000
> Crashed Thread: 3
>
> Dyld Error Message:
> Symbol not found: ___umoddi3
> Referenced from: /Applications/Binary.app/Contents/MacOS/Binary
> Expected in: /usr/lib/libSystem.B.dylib
>
> From what I've managed to find out umoddi3 is a routine for doing 64bit math on 32bit systems.
>
> otool -L on our binary shows (detail):
>
> /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 52.0.0)
> /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 159.0.0)
> /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1105.0.0)
>
> On 10.5 ___umoddi3 is defined in libgcc_s.1.dylib
> On 10.7 libgcc_s.1.dylib is a link to libSystem.B.dylib
>
> The strange thing: not all our 10.5.8 users seem to encounter this problem…
>
> We seem to link to the correct libraries, should we perhaps use GCC instead of llvm?
> (yes, I'm out of ideas…)
>
> Thanks,
> patrick
> --
> Patrick Machielse
> Hieper Software
>
> http://www.hieper.nl
> email@hidden
>
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