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Re: Powerpc Linux build fails
From: |
Alan Modra |
Subject: |
Re: Powerpc Linux build fails |
Date: |
Wed, 19 May 2004 14:40:40 +0930 |
User-agent: |
Mutt/1.4i |
On Tue, May 18, 2004 at 09:27:34PM -0700, Geoff Keating wrote:
> I am not sure about this new -mstrict. I am sure someone is expecting
> -mpower3 to really mean 'power3 only' and will get a nasty surprise
> when they use a power4 instruction by mistake and their program
> crashes.
Probably true. However, the feedback I'm getting at the moment is that
it's a nasty surprise that the Linux kernel doesn't compile.. The same
goes for current powerpc64 glibc with VMX extensions.
> It is perfectly acceptable to say "GAS version X will only work with
> GCC version > Y". People using old GCC can always use old binutils
> with it. (They can also hack their specs file to pass -many, if
> that's what they really want.)
>
> The fully-correct way to do this is to have GCC generate a directive
> after option parsing, like '.machine 7400' or so, and have GAS
> interpret it, otherwise you end up in specs hell. (Doesn't ppc gas
> already have a directive like that? I seem to remember seeing such a
> patch fly by...)
Yes, .machine was implemented 2003-11-22.
--
Alan Modra
IBM OzLabs - Linux Technology Centre
Re: Powerpc Linux build fails, Martin Schaffner, 2004/05/28
Re: Powerpc Linux build fails, Martin Schaffner, 2004/05/29