[LLVMdev] passing parameters for a analysis pass

[kryptonite_ubc]

As a follow up question, I am having problems when specifying cl::opt with
strings. I have seen the LoopUnrollPass, which uses cl::opt with unsigned.
 
I have tried exactly the same option:
cl::opt<string> with the parameter name as "fileName".
The code:
static cl::opt<std::string>metaFile("fileName", cl::desc("The llvm metadata
file to this pass"),cl::value_desc("llvmfile"));
  
When running opt, I use the pass argument : -fileName=file_metadata. 
opt -load ~/llvm-2.9/Release/lib/LLVMInject.so -analysisInject
-fileName=file_metadata < input_ll_file.ll

However, the filename does not change to "file_metadata". 

Any pointers on what could be wrong?

Thanks,
Anna

Will Dietz wrote:
> 
> If you think a commandline option is the way to go, LLVM makes it
> pretty easy to do so, see the documentation here:
> http://llvm.org/docs/CommandLine.html .
> 
> Mostly you can just add an appropriate "cl::opt<string>" option (for
> your filename, for example) and you're on your way.
> 
> ~Will
> 
> 

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