linux-kernel - perf/compat: Sharpen the libaudit dependencies test

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Date:	Thu, 12 Sep 2013 15:27:06 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	linux-tip-commits@...r.kernel.org, linux-kernel@...r.kernel.org,
	eranian@...gle.com, paulus@...ba.org, acme@...hat.com,
	hpa@...or.com, peterz@...radead.org, efault@....de,
	fweisbec@...il.com, adrian.hunter@...el.com, dsahern@...il.com,
	tglx@...utronix.de
Subject: perf/compat: Sharpen the libaudit dependencies test


There are older libaudit versions that don't have an audit_errno_to_name() 
method, resulting in a builtin-trace.c build error:

  builtin-trace.c: In function ‘trace__sys_exit’:
  builtin-trace.c:794: warning: implicit declaration of function ‘audit_errno_to_name’

Expand the libaudit test to detect this.

Signed-off-by: Ingo Molnar <mingo@...nel.org>

diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-tests.mak
index 708fb8e..5608add 100644
--- a/tools/perf/config/feature-tests.mak
+++ b/tools/perf/config/feature-tests.mak
@@ -210,6 +210,7 @@ define SOURCE_LIBAUDIT
 
 int main(void)
 {
+	printf("error message: %s\n", audit_errno_to_name(0));
 	return audit_open();
 }
 endef
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