llvm dev - Aug 2009 - [LLVMdev] rdynamic on Mac

Hi all,

My example compiler is working fine on Linux, including the extern'd
functions (via -rdynamic flag on linker), but a friend on a MacOS
(Darwin) cannot find the extern'd function.

LLVM ERROR: Program used external function 'printVar' which could not
be resolved!

I've read some posts on the web indicating problems with the -rdynamic
option on Mac's GCC, but I'm not sure. What's the Mac-style for
that?

cheers,
--renato

Reclaim your digital rights, eliminate DRM, learn more at
http://www.defectivebydesign.org/what_is_drm

Renato Golin wrote:
> I've read some posts on the web indicating problems with the -rdynamic
> option on Mac's GCC, but I'm not sure. What's the Mac-style for
that?
-rdynamic doesn't exist on OSX, nor should it be needed. Just make sure
that you do *not* strip the executable (i.e., avoid strip, install -s,
etc.), IIRC that's needed to make dlopening the executable work on OSX
(some versions at least).

HTH,
Albert

-- 
Dr. Albert Gr"af
Dept. of Music-Informatics, University of Mainz, Germany
Email:  Dr.Graef at t-online.de, ag at muwiinfa.geschichte.uni-mainz.de
WWW:    http://www.musikinformatik.uni-mainz.de/ag

Hi-

You /cannot/ build static binaries on Darwin apart from a few strange  
edge cases like the dynamic linker itself and kernel extensions - it's  
all implied to be dynamic. Where are the symbols you're trying to  
access coming from?

Alastair

On 31 Aug 2009, at 18:15, Renato Golin wrote:
> Hi all,
>
> My example compiler is working fine on Linux, including the extern'd
> functions (via -rdynamic flag on linker), but a friend on a MacOS
> (Darwin) cannot find the extern'd function.
>
> LLVM ERROR: Program used external function 'printVar' which could
not
> be resolved!
>
> I've read some posts on the web indicating problems with the -rdynamic
> option on Mac's GCC, but I'm not sure. What's the Mac-style for
that?
>
> cheers,
> --renato
>
> Reclaim your digital rights, eliminate DRM, learn more at
> http://www.defectivebydesign.org/what_is_drm
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
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2009/8/31 Albert Graef <Dr.Graef at t-online.de>:
> -rdynamic doesn't exist on OSX, nor should it be needed. Just make sure
> that you do *not* strip the executable (i.e., avoid strip, install -s,
> etc.), IIRC that's needed to make dlopening the executable work on OSX
> (some versions at least).
Ahn! That's it! In my "production" version of the Makefile make
strip
the final step on the binary.

thanks!

--renato

Reclaim your digital rights, eliminate DRM, learn more at
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