linux-kernel - Re: [PATCH 15/15] perf: replace _BSD_SOURCE macro by _DEFAULT

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Message-ID: <20141023215238.GC24223@marx-slim>
Date:	Thu, 23 Oct 2014 23:52:38 +0200
From:	Alexis Berlemont <alexis.berlemont@...il.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	linux-kernel@...r.kernel.org, jolsa@...hat.com, dsahern@...il.com,
	mingo@...nel.org, sam@...nborg.org, mmarek@...e.cz,
	namhyung@...nel.org
Subject: Re: [PATCH 15/15] perf: replace _BSD_SOURCE macro by _DEFAULT_SOURCE

Aaro Koskinen wrote:
> Hi,
> 
> On Mon, Sep 22, 2014 at 11:53:16PM +0200, Alexis Berlemont wrote:
> > Starting from glibc-2.20, the macro _BSD_SOURCE is deprecated and
> > should be replaced by _DEFAULT_SOURCE.
> 
> This patch fixes perf build breakage with glibc-2.20, so _DEFAULT_SOURCE
> is needed.
> 
> But shouldn't you also keep _BSD_SOURCE still there for a while for
> backwards compatibility? (Not sure if it has relevance for those
> using older glibcs...).

One more terrible mistake... Sorry.

> 
> Anyway to fix the perf + glibc-2.20 build failure:
> 
> Tested-by: Aaro Koskinen <aaro.koskinen@....fi>
> 
> (BTW, your patch was missing Signed-off-by.)
> 

OK. I fixed that on the next patch set (and I read the doc
linux/Documentation/SubmittingPatches). I hope my next patch set will
be less ludicrous...

Thank you for your feedback.

Alexis

> A.
> 
> > ---
> >  tools/perf/util/util.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
> > index 6686436..f56b4e0 100644
> > --- a/tools/perf/util/util.h
> > +++ b/tools/perf/util/util.h
> > @@ -38,7 +38,7 @@
> >  #define decimal_length(x)	((int)(sizeof(x) * 2.56 + 0.5) + 1)
> >  
> >  #define _ALL_SOURCE 1
> > -#define _BSD_SOURCE 1
> > +#define _DEFAULT_SOURCE 1
> >  #define HAS_BOOL
> >  
> >  #include <unistd.h>
> > -- 
> > 2.1.0
> > 
> > --
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