[LLVMdev] ExecutionEngine::create returns 0
subbu.pur at gmail.com
Mon Sep 27 23:53:30 PDT 2010
Hendrik Boom-2 wrote:
> 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
>> That call is perfectly valid, actually. It works for me when linked
>> g++ -o b b.o `llvm-config --ldflags` `llvm-config --libs engine jit`
> 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
> -- hendrik
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu
I am using llvm 2.6 and I am getting the same error. I tried using
llvm-config with flags '--libs core engine jit native'. But ExecutionEngine
returns NULL. I even tried including the JIT.h. No luck there too.
Here is my code listing:
llvm::ExecutionEngine* ee = llvm::ExecutionEngine::create(mModule);
llvm::Function* func = ee->FindFunctionNamed("main");
typedef void (*PFN)();
PFN pfn = reinterpret_cast<PFN> (ee->getPointerToFunction(func));
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