llvm dev - Sep 2010 - [LLVMdev] Problems with Passing agrument to a Pass

Hi,

I have a very naive question. I've written a pass that gets an argument from
the command line with the following code:

static cl::opt<int> LineNum("line-number", cl::Hidden,
cl::Required,cl::desc("line of variable being observed"));

Now when I run it, it seems like it cant see that I've put in an argument on
the command line:

opt -load /Users/sam/llvm/llvm-2.6/Release/lib/LLVMHello.dylib -hello2
goo3.bc 18

which "18" is the argument. Stupidly enough I've put this argument
any where
in the command line and it wont work it keeps telling me:

opt: Too many positional arguments specified!
Can specify at most 1 positional arguments: See: opt --help
opt: for the -line-number option: must be specified at least once!

Can someone please help me out. Thank you :)

Sam
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Ok, me again,

just found out the problem, I got to explicitly specify -line-number 18 to
make it work :wistle:.

Sam


Samaneh wrote:
> 
> Hi,
> 
> I have a very naive question. I've written a pass that gets an argument
> from the command line with the following code:
> 
> static cl::opt<int> LineNum("line-number", cl::Hidden,
> cl::Required,cl::desc("line of variable being observed"));
> 
> Now when I run it, it seems like it cant see that I've put in an
argument
> on the command line:
> 
> opt -load /Users/sam/llvm/llvm-2.6/Release/lib/LLVMHello.dylib -hello2
> goo3.bc 18
> 
> which "18" is the argument. Stupidly enough I've put this
argument any
> where in the command line and it wont work it keeps telling me:
> 
> opt: Too many positional arguments specified!
> Can specify at most 1 positional arguments: See: opt --help
> opt: for the -line-number option: must be specified at least once!
> 
> Can someone please help me out. Thank you :)
> 
> Sam
> 
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