linux-kernel - Re: [PATCH] perf: Let O= makes handle relative paths

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Date:	Mon, 13 Aug 2012 15:02:49 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH] perf: Let O= makes handle relative paths

Em Mon, Aug 13, 2012 at 04:29:09PM +0200, Borislav Petkov escreveu:
> On Mon, Aug 13, 2012 at 10:23:02AM -0400, Steven Rostedt wrote:
> > On Mon, 2012-08-13 at 15:24 +0200, Borislav Petkov wrote:
> > 
> > > So wouldn't it make sense to call this ABSOLUTE_O or so then?
> > 
> > That's just because you're russian, and are promoting Vodka! ;-)

Before:

[acme@...dy linux]$ rm -rf ../build/perf
[acme@...dy linux]$ make -j8 -C tools/perf/ LIBUNWIND_DIR=/opt/libunwind O=/home/acme/git/build/perf install
/bin/sh: line 0: cd: /home/acme/git/build/perf/: No such file or directory
make: Entering directory `/home/git/linux/tools/perf'
../scripts/Makefile.include:9: *** output directory "/home/acme/git/build/perf/" does not exist.  Stop.
make: Leaving directory `/home/git/linux/tools/perf'
[acme@...dy linux]$

Now:

[acme@...dy linux]$ rm -rf ../build/perf
[acme@...dy linux]$ make -j8 -C tools/perf/ LIBUNWIND_DIR=/opt/libunwind O=/home/acme/git/build/perf install
/bin/sh: line 0: cd: /home/acme/git/build/perf: No such file or directory
make: Entering directory `/home/git/linux/tools/perf'
    GEN perf-archive
    GEN /home/git/linux/tools/perf/python/perf.so
make[1]: Entering directory `/home/git/linux/tools/lib/traceevent'
make[2]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
    * new build flags or cross compiler
    CC /home/git/linux/tools/perf/perf.o
    CC /home/git/linux/tools/perf/builtin-annotate.o
    CC /home/git/linux/tools/perf/builtin-bench.o
    CC /home/git/linux/tools/perf/bench/sched-messaging.o
    CC /home/git/linux/tools/perf/bench/sched-pipe.o

I.e. it should stop if the O= provided directory is not there.

Can you fix this? Avoid vodka while doing it :-P

- Arnaldo
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