[LLVMdev] assert problem embedding llvm libs in linux - stuck

[Graham Wakefield]

Hi,

I have a shared library that makes use of LLVM/clang to add JIT  
capabilities to a front-end interface in Lua. This shared library is  
used within an executable application.  This all works and builds fine  
on OSX, but I'm having trouble replicating it for Linux. The build  
process goes fine, with no changes to the library code, however I'm  
receiving a SIGABRT caused by an assert when run:

/include/llvm/Support/CommandLine.h:483: void  
llvm::cl::parser<DataType>::addLiteralOption(const char*, const DT&,  
const char*) [with DT = const llvm::TargetMachineRegistryEntry*,  
DataType = const llvm::TargetMachineRegistryEntry*]: Assertion  
`findOption(Name) == Values.size() && "Option already exists!"' failed.

I'm not so familiar with the internals of LLVM nor standard practices  
for development on Linux, so I wondered if there is an experienced  
developer on the list who can spot the problem immediately...?  I've  
spent a few hours trying to figure this out, and I'm stuck. I'm not  
even sure why commandline options (llvm::cl::parser) are being called,  
since I'm embedding the libraries within an application.

More info:

Using llvm/clang revision 68132, Ubuntu 8.10.
Built llvm/clang using --enable-optimized --enable-pic

Code using LLVM/clang is built into a shared library (.so) linked to  
the LLVM/clang .a files and the .o files for Interpreter,  
ExecutionEngine, JIT, X86AsmPrinter and X86CodeGen.
This shared library is then linked into an executable, which also  
links with the LLVM/clang .a and .o files. Maybe this isn't the right  
way to do it, but it was the only way I could get it to build.

I'd post the code, but it would be incredibly lengthy.

Thanks

Graham