linux-kernel - [tip:perf/core] perf tools: Fix build against newer glibc

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Date:	Thu, 18 Aug 2011 20:11:48 GMT
From:	tip-bot for Josh Boyer <jwboyer@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	acme@...hat.com, linux-kernel@...r.kernel.org, hpa@...or.com,
	mingo@...hat.com, a.p.zijlstra@...llo.nl, jwboyer@...hat.com,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf tools: Fix build against newer glibc

Commit-ID:  195bcbf5078d74c8e00d68f04eb8695196fb31e8
Gitweb:     http://git.kernel.org/tip/195bcbf5078d74c8e00d68f04eb8695196fb31e8
Author:     Josh Boyer <jwboyer@...hat.com>
AuthorDate: Thu, 18 Aug 2011 07:37:21 -0400
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Thu, 18 Aug 2011 07:24:53 -0300

perf tools: Fix build against newer glibc

Upstream glibc commit 295e904 added a definition for __attribute_const__
to cdefs.h.  This causes the following error when building perf:

util/include/linux/compiler.h:8:0: error: "__attribute_const__"
redefined [-Werror] /usr/include/sys/cdefs.h:226:0: note: this is the
location of the previous definition

Wrap __attribute_const__ in #ifndef as we do for __always_inline.

Cc: Ingo Molnar <mingo@...e.hu>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Link: http://lkml.kernel.org/r/20110818113720.GL2227@zod.bos.redhat.com
Signed-off-by: Josh Boyer <jwboyer@...hat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/include/linux/compiler.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/include/linux/compiler.h b/tools/perf/util/include/linux/compiler.h
index 791f9dd..547628e 100644
--- a/tools/perf/util/include/linux/compiler.h
+++ b/tools/perf/util/include/linux/compiler.h
@@ -5,7 +5,9 @@
 #define __always_inline	inline
 #endif
 #define __user
+#ifndef __attribute_const__
 #define __attribute_const__
+#endif
 
 #define __used		__attribute__((__unused__))
 
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