linux-kernel - Re: [PATCH] perf tools: Speed up the perf build time by simplifying the perf --version string generation

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Date:	Tue, 30 Oct 2012 02:35:13 -0700
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Andrew Vagin <avagin@...nvz.org>,
	Borislav Petkov <bp@...64.org>,
	David Howells <dhowells@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH] perf tools: Speed up the perf build time by simplifying
 the perf --version string generation

Em Tue, Oct 30, 2012 at 09:46:00AM +0100, Ingo Molnar escreveu:
> +++ b/tools/perf/util/PERF-VERSION-GEN
> @@ -12,7 +12,7 @@ LF='
>  # First check if there is a .git to get the version from git describe
>  # otherwise try to get the version from the kernel makefile
>  if test -d ../../.git -o -f ../../.git &&
> -	VN=$(git describe --match 'v[0-9].[0-9]*' --abbrev=4 HEAD 2>/dev/null) &&
> +	VN=$(echo $(git tag --list "v[0-9].[0-9]*" | tail -1)"-g"$(git log -1 --abbrev=4 --pretty=format:"%h" HEAD) 2>/dev/null) &&

[acme@...dy linux]$ make -j8 -C tools/perf/ O=/home/acme/git/build/perf install
make: Entering directory `/home/git/linux/tools/perf'
error: unknown option `list'
usage: git tag [-a|-s|-u <key-id>] [-f] [-m <msg>|-F <file>] <tagname>
[<head>]

<SNIP>

[acme@...dy linux]$ git --version
git version 1.7.1

- Arnaldo
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