[LLVMdev] LLVM as a DLL

[Owen Anderson]

On May 13, 2008, at 10:12 PM, Jonathan S. Shapiro wrote:

> Owen:
>
> Can you clarify what kinds of dynamic linker issues you are seeing? I
> speculate that cross-library dependency resolution is high on the  
> list,
> but what else?
>
> shap

Others could probably answer it better (this was before my time), but  
my understanding was that certain versions of certain dynamic linkers  
took a very long time to load the very large shared libraries that  
make up LLVM, resulting in application launch times on the order of  
minutes.

The broader issue that LLVM is very large, and exposes an enormous  
API, because it is designed to serve many different purposes.  This  
results in huge libraries with huge exported symbol sets, which can  
(in some cases) result in very poor dynamic linker performance.  Most  
modern static linkers also support dead code stripping, so you don't  
end up paying too much of a space overhead in the final executable.

--Owen
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