CUPS_VERSION_DEFAULT?

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

Is there something like CUPS_VERSION_DEFAULT?

I would like to improve print/p5-Net-CUPS (which currently seems to be broken 
because of
	BUILDLINK_API_DEPENDS.cups+=   cups>=1.2.2<2.0
	.include "../../print/cups/buildlink3.mk"
) to be able to use cups (CUPS 2.x) or cups15 (CUPS 1.5.x).
[I've also updated it from 0.61 to 0.63 in the process.]

So I need to pull in either cups/buildlink3.mk or cups15/buildlink3.mk
depending on some user choice. How do I express that? An option?