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Date: Thu, 3 May 2012 14:57:48 -0700
From: Greg KH <gregkh@linuxfoundation.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        Jiri Olsa <jolsa@redhat.com>, Arnaud Lacombe <lacombar@gmail.com>,
        linux-kernel@vger.kernel.org
Subject: perf build failure on Linus's tree
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Linus's tree right now (3.4.rc5.67.gac001.dirty) gives me the following
build error when I try to build perf:
    CC util/parse-events-flex.o
<stdout>: In function ‘yy_get_next_buffer’:
<stdout>:1510:3: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
util/parse-events.l: In function ‘parse_events_lex’:
util/parse-events.l:122:1: error: ignoring return value of ‘fwrite’, declared with attribute warn_unused_result [-Werror=unused-result]
cc1: all warnings being treated as errors

Do you really want to ensure that flex's build warnings fail the build?

thanks,

greg k-h
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