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Re: Powerpc Linux build fails


From: Ian Lance Taylor
Subject: Re: Powerpc Linux build fails
Date: 17 May 2004 13:04:04 -0400
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3

Keith Pickens <address@hidden> writes:

> A recent change to opcodes/ppc-opc.c breaks powerpc kernel builds:
> 
> 2004-05-05  Alan Modra  <address@hidden>
> 
>         PR 146.
>         * ppc-opc.c (PPCVEC): Remove PPC_OPCODE_PPC.
> 
> This change appears to remove the default AltiVec support which is required
> for ppc
> kernel builds.

How is your compiler configured?

Altivec instructions shouldn't be supported by default, since they are
not supported on all PowerPC chips.  You can use -maltivec to turn on
Altivec support, or you can use a toolchain for which the default CPU
includes Altivec support.  There may be a bug, of course, but Alan's
specific change appears clearly correct.

Ian




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