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Date: Wed, 12 Apr 2017 10:19:21 +0200
From: Jiri Olsa <jolsa@redhat.com>
To: David Carrillo-Cisneros <davidcc@google.com>
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>, Simon Que <sque@chromium.org>,
        Wang Nan <wangnan0@huawei.com>, Jiri Olsa <jolsa@kernel.org>,
        He Kuang <hekuang@huawei.com>, Masami Hiramatsu <mhiramat@kernel.org>,
        Stephane Eranian <eranian@google.com>, Paul Turner <pjt@google.com>
Subject: Re: [PATCH 5/6] perf tools: disable JVMTI if no ELF support available
Message-ID: <20170412081921.GD17517@krava>
References: <20170412064919.92449-1-davidcc@google.com>
 <20170412064919.92449-7-davidcc@google.com>
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On Tue, Apr 11, 2017 at 11:49:18PM -0700, David Carrillo-Cisneros wrote:
> The build of JVMTI depends on LIBELF (-lelf). Make Makefile.conf
> check this dependendancy and notify user when not present.
> 
> Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
> ---
>  tools/perf/Makefile.config | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
> index cfd6015229a2..279c303b2c22 100644
> --- a/tools/perf/Makefile.config
> +++ b/tools/perf/Makefile.config
> @@ -274,6 +274,7 @@ ifdef NO_LIBELF
>    NO_LIBUNWIND := 1
>    NO_LIBDW_DWARF_UNWIND := 1
>    NO_LIBBPF := 1
> +  NO_JVMTI := 1
>  else
>    ifeq ($(feature-libelf), 0)
>      ifeq ($(feature-glibc), 1)
> @@ -283,7 +284,7 @@ else
>        LIBC_SUPPORT := 1
>      endif
>      ifeq ($(LIBC_SUPPORT),1)
> -      msg := $(warning No libelf found, disables 'probe' tool and BPF support in 'perf record', please install libelf-dev, libelf-devel or elfutils-libelf-devel);
> +      msg := $(warning No libelf found, disables 'probe' tool, jvmti, and BPF support in 'perf record', please install libelf-dev, libelf-devel or elfutils-libelf-devel);

nitpick ;-)

s/jvmti,/jvmti /

jirka