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    SubjectHow do arch/ppc and arch/powerpc differ?
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    Hello.

    According to Documentation/SubmitChecklist,
    ppc64 is a good architecture for cross-compilation checking.
    I've just set up cross compiling environment for ppc64
    using "crossdev -t ppc64" on Gentoo 2007.0 environment.

    Now I'm trying to modify Makefile to build kernel for ppc64.
    I've got a question here.

    ARCH ?= powerpc
    CROSS_COMPILE ?= powerpc64-unknown-linux-gnu-

    Which keyword ("ppc" or "powerpc") do I need to set for ARCH
    to do cross-compilation checking?
    How do they differ?

    Regards.


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