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

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Message-ID: <20120815102722.GB4640@aftab.osrc.amd.com>
Date:	Wed, 15 Aug 2012 12:27:22 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Arnaldo Carvalho de Melo <acme@...radead.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

On Mon, Aug 13, 2012 at 03:02:49PM -0300, Arnaldo Carvalho de Melo wrote:
> [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.

Why stop? Don't we want to make the directory instead and continue
building in there?

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Boris.

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