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Date: Wed, 11 Apr 2012 16:52:44 -0300
From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: David Ahern <dsahern@gmail.com>
Cc: Borislav Petkov <bp@amd64.org>, Ingo Molnar <mingo@kernel.org>,
        Michal Marek <mmarek@suse.cz>, Sam Ravnborg <sam@ravnborg.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Borislav Petkov <borislav.petkov@amd.com>
Subject: Re: [PATCH v5 5/5] tools: Connect to the kernel build system
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Em Wed, Apr 11, 2012 at 12:19:15PM -0600, David Ahern escreveu:
> On 4/11/12 12:08 PM, Arnaldo Carvalho de Melo wrote:
> 
> >>[acme@sandy linux]$ make -j8 O=/home/git/build/perf tools/perf_install
> >>[acme@sandy linux]$ ls -la tools/perf/*.o | wc -l
> >>22
> >>
> >>It should have honoured O=
> >>
> >>Can you fix this one please? :)
> >
> >But that can be on top of this series as the way I use it:
> >
> >   make -j8 -C tools/perf/ O=/home/git/build/perf install
> >
> >still works as expected.
> 
> Does this sequence still work?
> 
> cd tools/perf
> make O=/tmp/pbuild
> 
> and the O= is honored?

Yes:

[acme@sandy linux]$ mkdir /tmp/perf
[acme@sandy linux]$ cd tools/perf
[acme@sandy perf]$ make O=/tmp/perf
    MKDIR /tmp/perf/arch/x86/util
<SNIP>
    MKDIR /tmp/perf/util/ui/browsers
PERF_VERSION = perf.core.for.mingo.6.gea01fa
    GEN /tmp/perf/common-cmds.h
    * new build flags or prefix
    CC /tmp/perf/perf.o
    CC /tmp/perf/builtin-annotate.o
<SNIP>
    CC /tmp/perf/util/parse-options.o
    BISON event-parser
    FLEX event-parser
    BISON pmu-parser
    FLEX pmu-parser
    CC /tmp/perf/util/parse-events.o
<SNIP>
    AR /tmp/perf/libperf.a
    LINK /tmp/perf/perf
    GEN perf-archive
    GEN /tmp/perf/python/perf.so
[acme@sandy perf]$ 
[acme@sandy perf]$ /tmp/perf/perf --version
perf version perf.core.for.mingo.6.gea01fa
[acme@sandy perf]$

- Arnaldo