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    SubjectRe: crc32 cleanups
    On Fri, 12 Oct 2001, Horst von Brand wrote:
    > Jeff Garzik <jgarzik@mandrakesoft.com> said:
    > > We must consider the case where the kernel is built, and then a random
    > > 3rd party module comes along that needs crc32 features. An ar library
    > > won't cut it, and neither will [the existing crc32 method of] patching
    > > linux/lib/crc32.c. That leaves (a) unconditionally building it into the
    > > kernel, or (b) Makefile and Config.in rules.
    >
    > (b) won't work if my kernel has no CRC32 modules, and a random 3rd party
    > module needs it. So it looks like firm builtin is the only real option (a).

    Sure it will. (b) not only will work, but it is the preferred option.

    lib/Makefile will contain the line
    obj-$(CONFIG_CRC32) += crc32.o

    and arch/$arch/config.in will contain
    tristate 'Include crc32 library?' CONFIG_CRC32


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