[PATCH] Set cpu explicitly in kernel compiles
paulus at samba.org
Thu May 5 15:22:13 EST 2005
Tom Rini writes:
> Why won't it work with generic gcc4 ? Will something more than a lot of
> extra nops be added?
Well, say you are compiling for 405. You either need to have a gcc
that was configured with --with-cpu=405, or you need to have hacked
arch/ppc/Makefile to add -mcpu=405. In both cases the problem doesn't
arise. It only arises if you have a biarch gcc4 that was configured
without any --with-cpu=xxx option and is run without any -mcpu=xxx
If you think we should have -mcpu=xxx on the command line for 4xx,
44x, 8xx, etc., then that's fine, but that is a separate problem from
what my patch was addressing (one which my patch might make it easier
to fix, though).
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