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Date: Tue, 10 Jul 2007 14:46:48 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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Subject: Re: [x86 setup 13/33] Header file to produce 16-bit code with gcc
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Sender: linux-arch-owner@vger.kernel.org
To: Adrian Bunk <bunk@stusta.de>
Cc: Segher Boessenkool <segher@kernel.crashing.org>, Andi Kleen <ak@suse.de>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, akpm@linux-foundation.org
List-ID: <linux-arch.vger.kernel.org>

Adrian Bunk wrote:
>>
>> For now, I have:
> 
> Can't you use the global CFLAGS and append your specific ones?
> 

No.  A lot of the x86-64 flags don't work with -m32.

>> CFLAGS          := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
> 
> -g ???

Leaves debugging information in setup.elf.  It is handy sometimes.

>>                    $(cflags-$(ARCH)) \
>>                    -Wall -Wstrict-prototypes \
>>                    -march=i386 -mregparm=3 \
> 
> Why -march=i386 ?

So we can at least spit out an error message.

	-hpa