Messages in this thread |  | | | Date | Mon, 12 Oct 2009 21:07:07 +0200 | | From | Ingo Molnar <> | | Subject | Re: [PATCH tracing/kprobes v3 6/7] perf: Add perf probe subcommand for kprobe-event setup helper |
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* Frederic Weisbecker <fweisbec@gmail.com> wrote:
> On Wed, Oct 07, 2009 at 06:28:23PM -0400, Masami Hiramatsu wrote: > > Add perf probe subcommand for kprobe-event setup helper to perf command. > > This allows user to define kprobe events by C expressions (C line numbers, > > C function names, and C local variables). > > > > > My libdwarf.h and dwarf.h are available through <libdwarf.h> and > <dwarf.h>, these are in /usr/include > > But even by fixing the include path in the makefile and probe-finder.h, > I get the following build error: > > util/probe-finder.c: In function ‘die_get_entrypc’: > util/probe-finder.c:222: erreur: ‘Dwarf_Ranges’ undeclared (first use in this function) > util/probe-finder.c:222: erreur: (Each undeclared identifier is reported only once > util/probe-finder.c:222: erreur: for each function it appears in.) > util/probe-finder.c:222: erreur: ‘ranges’ undeclared (first use in this function) > cc1: warnings being treated as errors > util/probe-finder.c:223: erreur: ISO C90 forbids mixed declarations and code > util/probe-finder.c:247: erreur: implicit declaration of function ‘dwarf_get_ranges’ > util/probe-finder.c:247: erreur: nested extern declaration of ‘dwarf_get_ranges’ > util/probe-finder.c:251: erreur: implicit declaration of function ‘dwarf_ranges_dealloc’ > util/probe-finder.c:251: erreur: nested extern declaration of ‘dwarf_ranges_dealloc’ > make: *** [util/probe-finder.o] Erreur 1 > > > I remember we talked about that before, but I don't remember well why it happened. > This is because of a libdwarf version or something, right? > > Which one should I pick? Mine is: > > libdwarf.h > > $Revision: #9 $ $Date: 2008/01/17 $
if it's possible to still have a single set of APIs it would be nice to auto-detect and massage all these libdwarf versions into a single backend within perf.
Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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