llvm dev - Mar 2005 - [LLVMdev] Setting options when using libraries

Hi,

just a quick question, how do you set options when you are linking with the LLVM
libraries?
for example, the option:

   cl::opt<bool> DisablePatternISel("disable-pattern-isel",
cl::Hidden,
                                  cl::desc("Disable the pattern isel XXX
FIXME"),
                                    cl::init(true));

How do I change it from within our application?

Up to now I've been changing the defaults in the LLVM sources and
recompiling, but it seems a very very stupid way of
doing it, but I could not find anything in the documentation about how to set
options through the API..

m.

On Wed, 16 Mar 2005, Morten Ofstad wrote:
> just a quick question, how do you set options when you are linking with the
> LLVM libraries?
> for example, the option:
>
>  cl::opt<bool> DisablePatternISel("disable-pattern-isel",
cl::Hidden,
>                                 cl::desc("Disable the pattern isel XXX
> FIXME"),
>                                   cl::init(true));
>
> How do I change it from within our application?
Probably the easiest way to do this is to just do something like this:

const char *args[] = { "-disable-pattern-isel", "false", 0
};
cl::ParseCommandLineOptions(2, args);
> Up to now I've been changing the defaults in the LLVM sources and 
> recompiling, but it seems a very very stupid way of doing it, but I could
not
> find anything in the documentation about how to set options through the
API..
The other way to do it would be to add a boolean somewhere that overrides 
this...

-Chris

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