linux-kernel - Re: [PATCH 09/11] perf python: Link with libtraceevent

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Message-ID: <20121018140033.GC2057@infradead.org>
Date:	Thu, 18 Oct 2012 11:00:33 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 09/11] perf python: Link with libtraceevent

Em Thu, Oct 18, 2012 at 10:38:18AM +0900, Namhyung Kim escreveu:
> On Wed, 17 Oct 2012 14:19:45 -0300, Arnaldo Carvalho de Melo wrote:
> > From: Arnaldo Carvalho de Melo <acme@...hat.com>
> >
> > The evsel methods to read tracepoint fields uses libtraceevent
> > functions, becoming needed by the python binding as well.
> 
> I got a build error after adding 'extern unsigned int page_size' to
> util/python.c - please see my previous reply.
> 
>   namhyung@...ong:perf$ make
>       SUBDIR ../lib/traceevent/
>       LINK perf
>       GEN python/perf.so
>   gcc: error: python_ext_build/tmp//../../libtraceevent.a: No such file or directory
>   error: command 'gcc' failed with exit status 1
>   cp: cannot stat `python_ext_build/lib/perf.so': No such file or directory
>   make: *** [python/perf.so] Error 1
> 
> The libtraceevent.a will be in
> python_ext_build/tmp/../../../lib/traceevent/libtraceevent.a if make was
> invoked without the O.
> 
> Makefile contains following:
> 
>   TRACE_EVENT_DIR = ../lib/traceevent/
>   
>   ifneq ($(OUTPUT),)
>   	TE_PATH=$(OUTPUT)
>   else
>   	TE_PATH=$(TRACE_EVENT_DIR)
>   endif
>   
>   LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
>   TE_LIB := -L$(TE_PATH) -ltraceevent

I see, so we need to somehow propagate this TE_PATH variable to the setup.py file...

- Arnaldo
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