linux-kernel - Re: [PATCH 8/8] perf tools: Make perf depend on libbpf

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Date:	Tue, 22 Sep 2015 10:12:32 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Jiri Olsa <jolsa@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	linux-kernel@...r.kernel.org, Wang Nan <wangnan0@...wei.com>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	Daniel Borkmann <daniel@...earbox.net>,
	David Ahern <dsahern@...il.com>, He Kuang <hekuang@...wei.com>,
	Kaixu Xia <xiakaixu@...wei.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Zefan Li <lizefan@...wei.com>, pi3orama@....com
Subject: Re: [PATCH 8/8] perf tools: Make perf depend on libbpf

Em Tue, Sep 22, 2015 at 09:02:59AM +0200, Jiri Olsa escreveu:
> On Mon, Sep 21, 2015 at 06:23:21PM -0300, Arnaldo Carvalho de Melo wrote:
> 
> SNIP
> 
> > +      NO_LIBBPF := 1
> >      else
> >        ifneq ($(filter s% -static%,$(LDFLAGS),),)
> >          msg := $(error No static glibc found, please install glibc-static);
> > @@ -309,6 +312,13 @@ ifndef NO_LIBELF
> >        $(call detected,CONFIG_DWARF)
> >      endif # PERF_HAVE_DWARF_REGS
> >    endif # NO_DWARF
> > +
> > +  ifndef NO_LIBBPF
> > +    ifeq ($(feature-bpf), 1)
> > +      CFLAGS += -DHAVE_LIBBPF_SUPPORT
> > +      $(call detected,CONFIG_LIBBPF)
> 
> what depends on CONFIG_LIBBPF ? I dont see any object being dependent on it

Nothing, as far as this patchkit goes, that is why I said this in the
cover letter:

---------------------------------------------------------------
	The last one is not planned for my next perf/core pull req to
Ingo, still requires some more work, but is necessary so that we can
exercise the tools/build/ features fixed/introduced in this patchkit.
---------------------------------------------------------------

https://lkml.kernel.org/r/1442870601-26004-1-git-send-email-acme@kernel.org

- Arnaldo
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