From: Andi Kleen <ak@suse.de>
To: Keith Owens <kaos@ocs.com.au>
Subject: Re: 2.6.18-rc4 warning on arch/x86_64/boot/compressed/head.o
Date: Tue, 8 Aug 2006 04:55:34 +0200
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On Tuesday 08 August 2006 04:47, Keith Owens wrote:
> Compiling 2.6.18-rc4 on x86_64 gets this warning.
> 
>   gcc -Wp,-MD,arch/x86_64/boot/compressed/.head.o.d  -nostdinc -isystem /usr/lib64/gcc/x86_64-suse-linux/4.1.0/include -D__KERNEL__ -Iinclude -Iinclude2 -I$KBUILD_OUTPUT/linux/include -include include/linux/autoconf.h -D__ASSEMBLY__ -m64 -traditional -m32  -c -o arch/x86_64/boot/compressed/head.o $KBUILD_OUTPUT/linux/arch/x86_64/boot/compressed/head.S
>   ld -m elf_i386  -Ttext 0x100000 -e startup_32 -m elf_i386 arch/x86_64/boot/compressed/head.o arch/x86_64/boot/compressed/misc.o arch/x86_64/boot/compressed/piggy.o -o arch/x86_64/boot/compressed/vmlinux 
> ld: warning: i386:x86-64 architecture of input file `arch/x86_64/boot/compressed/head.o' is incompatible with i386 output
> 

It always gave that since some binutils update long ago.
If you know how to fix it please submit a patch, but as far as I know it's harmless.

-Andi
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