[OE-core] [PATCH 3/3] Add basic PowerPC core tune config

[Richard Purdie]

On Tue, 2011-07-26 at 08:47 -0500, Kumar Gala wrote:
> On Jul 26, 2011, at 7:44 AM, Richard Purdie wrote:
> 
> > Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
> > ---
> > meta/conf/machine/include/powerpc/arch-powerpc.inc |   45 +++++++++++++++++++-
> > meta/conf/machine/include/tune-ppc603e.inc         |   12 ++++-
> > meta/conf/machine/include/tune-ppce300c2.inc       |   12 ++++-
> > meta/conf/machine/include/tune-ppce500.inc         |   13 ++++--
> > meta/conf/machine/include/tune-ppce500mc.inc       |   12 ++++-
> > meta/conf/machine/include/tune-ppce500v2.inc       |   12 ++++-
> > 6 files changed, 88 insertions(+), 18 deletions(-)
> 
> One thing I'm wondering about as we do this is the ability to pass
> --with-cpu to gcc & [e]glibc configure to pickup proper optimized cfgs
> & libs for a given target.

As far as I can tell, gcc 4.x has no --with-cpu option. We pass the
correct march and mtune options to the compiler at runtime through
CFLAGS and friends.

You're already found the way to pass configuration to *libc using values
in TARGET_FPU to pickup the right configuration.

Is there a use case we're missing?

Cheers,

Richard