lkml.org 
[lkml]   [2003]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] check_gcc for i386
Alan Cox wrote:
> On Sad, 2003-08-30 at 23:58, Marcelo Tosatti wrote:
>
>>> ifdef CONFIG_MPENTIUM4
>>>-CFLAGS += -march=i686
>>>+CFLAGS += $(call check_gcc,-march=pentium4,-march=i686)
>>> endif
>>>
>>> ifdef CONFIG_MK6
>>
>>OK, I forgot what that does. Can you please explain in detail what
>>check_gcc does.
>
>
> Tries to use gcc with the options given and if not falls back to the
> second set suggested. So it'll try -march=pentium4 (new gcc) and
> fall back to -march=i686


Yep. I introduced check_gcc into 2.4 (backported from 2.5), in fact.

The above change does exactly what Alan describes, and is a patch I was
planning to submit myself :) I did not want to change compiler options
at the time when I submitted the check_gcc patch, but after many months
of manually patching to get the best compiler flags, it seems solid.

Jeff



-
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: 2005-03-22 13:48    [W:0.083 / U:7.064 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site