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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