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    SubjectRe: [RFC] Extending kbuild syntax
    Date
    On Saturday 29 September 2007 22:11, Sam Ravnborg wrote:
    > The second is the more controversial suggestion.
    > In several Makefile we have simple if expression of the variants:
    > if ($(CONFIG_FOO),y)
    > obj-$(CONFIG_BAR) += fubar.o
    > endif

    Sometimes substitution looks acceptable:

    > -nfsd-$(CONFIG_NFSD) := nfsctl.o
    > -obj-y += $(nfsd-y) $(nfsd-m)
    > +obj-y-if-$(CONFIG_NFSD) += nfsctl.o

    obj-$(CONFIG_NFSD:m=y) += nfsctl.o


    But for the nontrivial cases, things get pretty ugly:

    > -ifeq ($(CONFIG_PROC_FS),y)
    > -obj-$(CONFIG_LOCKDEP) += lockdep_proc.o
    > -endif

    obj-$(CONFIG_PROC_FS:y=$(CONFIG_LOCKDEP)) += lockdep_proc.o

    Andreas
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