[LLVMdev] ExecutionEngine::create returns 0
Hendrik Boom
hendrik at topoi.pooq.com
Tue Jun 10 07:39:07 PDT 2008
On Tue, 10 Jun 2008 07:07:35 +0530, Mahadevan R wrote:
>> Now to compare it in detail with the much smaller program I've got and
>> maybe I'll figure out what's wrong with my call to
>> ExecutionEngine::create.
>
> That call is perfectly valid, actually. It works for me when linked
> with:
>
> g++ -o b b.o `llvm-config --ldflags` `llvm-config --libs engine jit`
>
> Cheers,
> -Mahadevan.
Thanks. It's compiling and executing now.
The story appears to be this:
llvm::ExecutionEngine::create requires particular libraries (presumably
those that involve execution, JIT code generation, or interpretation) to
be linked into the executable (the executable that contains the call to
llvm::ExecutionEngine::create), or else it returns NULL. However,
llvm::ExecutionEngine::create does not itself contains references to
entry-points that would cause the necessary libraries to be sought by the
linker, so no linker failure results.
Would it be possible to include this information in the documentation for
llvm::ExecutionEngine::create?
-- hendrik
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