linux-kernel - Re: [PATCH] basic perf support for sparc

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Message-ID: <20090801082048.GX12579@kernel.dk>
Date:	Sat, 1 Aug 2009 10:20:48 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Anton Blanchard <anton@...ba.org>
Cc:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, fweisbec@...il.com,
	Ingo Molnar <mingo@...e.hu>, benh@...nel.crashing.org,
	penberg@...helsinki.fi, vegard.nossum@...il.com, paulus@...ba.org,
	williams@...hat.com, acme@...hat.com
Subject: Re: [PATCH] basic perf support for sparc

On Sat, Aug 01 2009, Anton Blanchard wrote:
> 
> Hi,
> 
> > > Building the perf tool is somewhat involved on sparc64
> > > though, since 64-bit versions of zlib/libelf/bfd aren't
> > > directly available (at least on debian 5.x). But once you
> > > get there, it runs :-). Would it be easier/functional
> > > to build 32-bit userland perf instead?
> > 
> > Same is true on ppc64, btw. How are others handling this?
> 
> The requirement for libz was removed, so up until recently we only needed
> a 64bit version of elfutils which is easy to build.
> 
> It looks like we now have a requirement on binutils which is considerably
> more painful to build. One option is to make the bfd requirement optional, all
> you lose would be the ability to see c++ demangled names I think.

Right, binutils is the ugly one. I got a libbfd.so built for both ppc
and sparc, but it wasn't just a make && make install job. Personally I
could not care less about losing c++ demangled name support, so that
approach sounds fine to me :-)

-- 
Jens Axboe

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