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To: Pavel Machek <pavel@ucw.cz>
Cc: linux-kernel@vger.kernel.org
Subject: Re: compiling kernel with debug and optimization
References: <20030210111151.31800.qmail@web20418.mail.yahoo.com.suse.lists.linux.kernel> <20030210192324.GA154@elf.ucw.cz.suse.lists.linux.kernel>
From: Andi Kleen <ak@suse.de>
Date: 11 Feb 2003 12:11:12 +0100
In-Reply-To: Pavel Machek's message of "11 Feb 2003 12:08:05 +0100"
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Pavel Machek <pavel@ucw.cz> writes:

> Hi!
> 
> > Does compiling with -g option degrade performance? IMO it should NOT.
> > 
> > If that's true, then why dont we compile kernels with both -g and -O2
> > always? 
> 
> Build with -g takes *a lot* of diskspace, like 1Gig.

With gcc 3.x and its dwarf2 default.

It's a lot smaller when you compile with -gstabs (on i386)
stabs works as well for 32bit, but is much more compact.

-Andi
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