Message-ID: <49EF01B4.6000406@redhat.com>
Date: Wed, 22 Apr 2009 07:38:28 -0400
From: Masami Hiramatsu <mhiramat@redhat.com>
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To: Anders Kaseorg <andersk@MIT.EDU>
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       "H. Peter Anvin" <hpa@zytor.com>,
       Stephen Rothwell <sfr@canb.auug.org.au>, Jeff Arnold <jbarnold@MIT.EDU>
Subject: Re: [PATCH v2 0/4] Add support for compiling with	-ffunction-sections
 -fdata-sections
References: <1238973278-31735-1-git-send-email-tabbott@mit.edu> <20090421140228.GC3303@hack> <alpine.DEB.2.00.0904211311110.7725@vinegar-pot.mit.edu>
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Anders Kaseorg wrote:
> On Tue, 21 Apr 2009, Américo Wang wrote:
>> Nice work! But, don't -ffunction-sections and -fdata-sections have
>> collisions with '-g' and 'gprof'? Just like what gcc(1) describes.
> 
> That description seems to be long obsolete.  gcc used to warn that 
> -ffunction-sections may affect debugging, but that warning was disabled 
> for ELF targets in 1999, presumably because ELF has always supported 
> arbitrary section names even though some other object formats have issues.
>   <http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00975.html>
> 
> I know that debugging under -ffunction-sections -g works fine on at least 
> x86, which is the only platform on which we currently propose to provide 
> this option, and based on that message it looks like other platforms are 
> fine too.

Would you know actual version of gcc from which supports the combination of
-ffunction-sections and -g?

Thank you,

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@redhat.com

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