perf/compat: Sharpen the libaudit dependencies test

[Ingo Molnar]

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 âtrace__sys_exitâ:
  builtin-trace.c:794: warning: implicit declaration of function âaudit_errno_to_nameâ

Expand the libaudit test to detect this.

Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>

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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