linux-kernel - Re: Building Kernel with -O0

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Date:	Tue, 9 Sep 2008 19:04:52 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	"Keith A. Prickett" <keithp@...vell.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Building Kernel with -O0

On Thu, Sep 04, 2008 at 10:50:53AM -0700, Keith A. Prickett wrote:
>...
> It seems building with optimization
> level 0 should be a natural thing for kernel driver developers to do for
> debugging purposes.
> 
> In summary: I want to compile with optimizations off and the compile is
> failing now when I try this.  How can this be resolved?
>...

There are several places in the kernel where we e.g. rely on gcc 
removing dead code, and otherwise the linking of the kernel fails.

Compiling with -O0 never worked, and is not likely to ever work.

> Thanks in advance,
> Keith Prickett

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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