Re: [PATCH] basic perf support for sparc

[Ingo Molnar <mingo@elte.hu>]

* Kyle McMartin <kyle@mcmartin.ca> wrote:

> On Sun, Aug 02, 2009 at 08:41:48PM +0200, Ingo Molnar wrote:
> > Could we somehow define a weak symbol for those library functions 
> > ourselves and thus just fall back to that (which does nothing) 
> > instead of failing the link?
> > 
> 
> Well, you could just dlopen the object, but that's kind of 
> gross...

hm, why is it gross? I think it's a nicely plug-and-play tooling 
solution - instead of some obscure make flag.

Since we define the prototype anyway:

> +static inline char *bfd_demangle(void __used *v, const char __used *c,
> +				int __used i) {
> +	return NULL;
> +}

We are sticking to a given version of the API. We could turn that 
into a function pointer and fill it in during startup via dlopen(). 
If it's NULL then we dont call it and assume a value of NULL.

Mind submitting such a version of your fix? It would nicely decrease 
the build requirements cross section surface of perf.

	Ingo