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SubjectRe: [PATCH 4/6] Add support for LZO-compressed kernels for ARM
On 08/07/2009 01:00 PM, Russell King - ARM Linux wrote:
> On Fri, Aug 07, 2009 at 03:55:24PM +0200, Albin Tonnerre wrote:
>> That's true for the actual kernel image, but not for the bootstrap code we use
>> when compiling compressed kernels. arch/arm/boot/compressed/Makefile uses
>> libgcc, unless I'm overlooking something here:
>>
>> arm-unknown-linux-uclibcgnueabi-ld -EL --defsym zreladdr=0x20008000
>> --defsym initrd_phys=0x20410000 --defsym params_phys=0x20000100 -p
>> --no-undefined -X
>> /home/albin/x-tools/arm-unknown-linux-uclibcgnueabi/lib/gcc/arm-unknown-linux-uclibcgnueabi/4.3.2/libgcc.a
>> -T arch/arm/boot/compressed/vmlinux.lds arch/arm/boot/compressed/head.o
>> arch/arm/boot/compressed/piggy.gzip.o arch/arm/boot/compressed/misc.o -o
>> arch/arm/boot/compressed/vmlinux
>
> It's because libgcc appears in the wrong place in the command line, and
> due to the way kbuild works, we can't get it into the right place easily.
>
> Linkers are sensitive to the order of archives on the command line - its
> pointless having an archive as the first file argument because none of
> the contained objects will ever be pulled in.
>
> Sam - any ideas how to solve this?

Can we use the group feature of ld for this?

-hpa



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