lkml.org 
[lkml]   [2010]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [hellogcc] Re: [PATCH] Built kernel without -O2 option
From
Date
On Mon, 2010-11-29 at 13:10 -0500, Valdis.Kletnieks@vt.edu wrote:
> On Mon, 29 Nov 2010 17:45:15 +0800, 乔崇 said:
>
> > change mycc to this will work,:)
> >
> > #!/bin/sh
> > gcc "$@" -O0 ||
> > gcc "$@" -O1 ||
> > gcc "$@"
>
> That may result in issues - the problem is that there are places in the kernel
> where 'gcc -O0' will *compile* cleanly, but not actually *run* correctly.
>

There may be arch-specific places that cannot be made to run -O0.
See this thread from a few years ago:

http://www.spinics.net/lists/arm-kernel/msg24836.html

------------------------------------------------------------------------
Steven J. Magnani "I claim this network for MARS!
www.digidescorp.com Earthling, return my space modulator!"
#include <standard.disclaimer>


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2010-11-29 19:37    [from the cache]
©2003-2011 Jasper Spaans