[linux-dvb] [PATCH] Some changes to the Kbuild help

Trent Piepho xyzzy at speakeasy.org
Tue Apr 4 00:25:09 CEST 2006


On Sat, 1 Apr 2006, Michael Krufky wrote:
> The indirection is necessary, because VIDEO_CX88_VP3054 cannot both
> depend on VIDEO_CX88_DVB_MT352 (which depends on
> !VIDEO_CX88_DVB_ALL_FRONTENDS) and be selected by
> VIDEO_CX88_DVB_ALL_FRONTENDS at the same time.  I don't really know what
> that condition is called... "circular dependency paradox" ?

Thank you, it makes perfect sense now.  In essence you have this:

config A
	select B
config B
	depends on !A

If A is selected then B needs to be true because A selected it, but B can't be
true because it depends on !A.



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