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Date: Tue, 09 Dec 2003 10:58:25 +0100
From: Dirk Behme <dirk.behme@de.bosch.com>
Organization: Blaupunkt GmbH
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To: "'linux-mips@linux-mips.org'" <linux-mips@linux-mips.org>
Subject: Re: GCC 3.3.2 and Alchemy AU1100
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Hamilton, Ian wrote:

> Hi there.
> 
> I'm trying to build software for the AMD AU1100 processor using version
> 3.3.2 of the gnu compiler, and I'm having trouble figuring out the -march,
> -mtune, etc settings.
> 
> Version 2.95 of gcc uses something like -mcpu=r4600, but this doesn't work
> with 3.3.2.
> 
> I've tried other likely-looking options (e.g. -mips32), but the compiler
> fails to assembler instructions like mtc0 and cache.
> 
> Has anyone built for the AU1100 using gcc 3.3.2? If so, could you tell me
> the cpu options you used please?

For a VR41xx CPU with GCC 3.3.1 I have used

-march=r4600 -mips3 -Wa,--trap

instead of the old

-mcpu=r4600 -mips2 -Wa,--trap

Not sure whether this is correct (no test of the output on a target
yet), but it compiles.