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Re: [Libunwind-devel] compilation errors involving _Unwind_Resume

From: Adam Portley
Subject: Re: [Libunwind-devel] compilation errors involving _Unwind_Resume
Date: Wed, 27 Feb 2008 13:03:33 -0800 (PST)

Hi Arun,

I'm using a version from savannah mentioned in perftools:
but I can try downloading from git if it's likely to be more up-to-date.

Thanks very much for the linking suggestion.  I couldn't find -lgcc_eh (maybe because my gcc was compiled with "--enable-shared=libstdc++"?) but I was able to compile using "libgcc.a libunwind.a libstdc++.a".  Are there any drawbacks to using this instead?  Just for curiosity's sake, why does adding libgcc resolve the multiple definition error?

I guess the warnings in perftools/INSTALL about static linkage apply to my case (since I'm linking with the *.a files).  I will add the --eh-frame-hdr linker option as suggested.  Do you know of any other caveats?  I'd prefer to not have to install these libraries everywhere if possible - do you think this setup will work given that the app is compiled on a 32 bit machine and run on x86_64?

Thanks again,

Arun Sharma <address@hidden> wrote:
On Tue, Feb 26, 2008 at 4:50 PM, Adam Portley <address@hidden> wrote:
Is this the correct mailing list for basic libunwind usage questions?  I tried subscribing at address@hidden as described in the package README and received an error message in reply.

Adam, which version of libunwind are you using? I'd suggest using the version in git.
Can you try -lgcc_eh -lunwind -lstdc++ in that order?

Yes, this is the right mailing list.


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