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SubjectRe: [PATCH v4 2/6] perf tools: Promote proper messages for cross-platform unwind
On Thu, May 19, 2016 at 06:46:09PM +0200, Jiri Olsa wrote:
> On Thu, May 19, 2016 at 11:47:38AM +0000, He Kuang wrote:
>
> SNIP
>
> > #endif /* ARCH_PERF_COMMON_H */
> > diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
> > index 1e46277..a86b864 100644
> > --- a/tools/perf/config/Makefile
> > +++ b/tools/perf/config/Makefile
> > @@ -345,6 +345,12 @@ ifeq ($(ARCH),powerpc)
> > endif
> >
> > ifndef NO_LIBUNWIND
> > + ifeq ($(feature-libunwind-x86), 1)
> > + LIBUNWIND_LIBS += -lunwind-x86
> > + $(call detected,CONFIG_LIBUNWIND_X86)
> > + CFLAGS += -DHAVE_LIBUNWIND_X86_SUPPORT
> > + endif
> > +
>
> how does one install that lirary?

had to uninstall x86_64..

[jolsa@krava perf]$ rpm -qa | grep libunw
libunwind-devel-1.1-10.fc22.i686
libunwind-1.1-10.fc22.i686
libunwind-1.1-10.fc22.x86_64


however it's still off:

[jolsa@krava perf]$ make VF=1
BUILD: Doing 'make -j4' parallel build

Auto-detecting system features:

SNIP

... libunwind: [ OFF ]

SNIP

... libunwind-x86: [ OFF ]
... libunwind-x86_64: [ OFF ]
... libunwind-arm: [ OFF ]
... libunwind-aarch64: [ OFF ]
... pthread-attr-setaffinity-np: [ on ]
... stackprotector-all: [ on ]
... timerfd: [ on ]


thanks,
jirka

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