linux-kernel - Re: [GIT PULL 00/20] perf/core improvements

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Message-ID: <20120620144902.GB2007@gmail.com>
Date:	Wed, 20 Jun 2012 16:49:02 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Namhyung Kim <namhyung@...il.com>
Cc:	Arnaldo Carvalho de Melo <acme@...radead.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	Arun Sharma <asharma@...com>,
	Benjamin Redelings <benjamin.redelings@...cent.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	David Ahern <dsahern@...il.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>, Jiri Olsa <jolsa@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung.kim@....com>,
	Paul Mackerras <paulus@...ba.org>,
	Pekka Enberg <penberg@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Robert Richter <robert.richter@....com>,
	Shan Wei <davidshan@...cent.com>,
	Stephane Eranian <eranian@...gle.com>,
	Sunjin Yang <fan4326@...il.com>,
	Tom Zanussi <tzanussi@...il.com>,
	Ulrich Drepper <drepper@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [GIT PULL 00/20] perf/core improvements


* Namhyung Kim <namhyung@...il.com> wrote:

> 2012-06-20 (수), 14:01 +0200, Ingo Molnar:
> > One Makefile bug I noticed is that lib/tracevents does not clean 
> > out these files:
> > 
> >  .event-parse.d
> >  .parse-filter.d
> >  .parse-utils.d
> >  .trace-seq.d
> > 
> > and this can break the build when the libgcc package upgraded:
> > 
> >  comet:~/tip/tools/perf> make -j
> >      SUBDIR ../lib/traceevent/
> >  make[1]: *** No rule to make target `/usr/lib/gcc/x86_64-redhat-linux/4.7.0/include/stddef.h', 
> >   needed by `event-parse.o'.  Stop.
> >  make: *** [../lib/traceevent//libtraceevent.a] Error 2
> 
> So how should we deal with it? Just plain 'make clean' should 
> delete *.d files or add something like 'make distclean' to do 
> that?

Well, 'make' should notice that they are stale or should 
regenerate them all the time.

Thanks,

	Ingo
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