[LLVMdev] trouble finding symbols

[Bill Wendling]

On Fri, May 9, 2008 at 5:35 PM, Ryan M. Lefever <lefever at crhc.uiuc.edu> wrote:
> I am trying to upgrade to the latest version of LLVM from svn. My
> transformations compile correctly, but when I go to run them I get a
> symbol lookup error.  In particular, I have 2 libraries that I compile
> for use with opt called libaux.so and libmyxform.so.  libaux.so
> implements functions that are used by libmyxform.so.
>
> When I run:
>
> -------
> /llvm/bin/opt -load=/work/src/compiler/Debug/lib/libaux.so
> -load=/work/compiler/Debug/lib/libmyxform.so -myxform -f -o x.bc y.bc
> -------
>
> I get:
>
> ------
> /llvm/bin/opt: symbol lookup error:
> /work/src/compiler/Debug/lib/libmemrep.so: undefined symbol:
> _ZN3aux8deleteGVEPN4llvm14GlobalVariableEPNS0_6ModuleE
> ------
>
What is libmemrep.so? Is it loaded before or after libaux.so?

-bw

> When I perform "nm /work/src/compiler/Debug/lib/libaux.so | grep
> _ZN3aux8deleteGVEPN4llvm14GlobalVariableEPNS0_6ModuleE" it returns:
>
> -------
> 0000000000078950 T _ZN3aux8deleteGVEPN4llvm14GlobalVariableEPNS0_6ModuleE
> -------
>
> That indicates that the symbol does exist in libaux.so.  Does anyone
> have any ideas on what the problem could be, or how to go about
> debugging it?  In previous versions of LLVM I did not have this problem.
>
> Thanks,
> Ryan
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