kern/121292: FreeBSD-7.0 kernel build fails on FreeBSD-6.3

[Jukka A. Ukkonen]

Quoting Remko Lodder:
> 
> Kris is not wrong here, you are confused ;)

	Entirely correct. I was confused.

	Anyhow my custom kernels have always been (and probably always
	will be) based on generic and almost invariably only adding
	things which are not default parts of generic.
	The problem was a missing "device wlan_amrr" line which I had
	skipped by accident while merging my older 6.3 custom config
	and 7.0 generic.

	Previously parallel make has not let the potential error
	messages roll several hundreds of lines out of a 50 line
	xterm window but given up very quickly after an error.
	For some reason this time any alleged error messages managed
	to speed out of the xterm buffer completely.
	Recording the whole build to a typescript file will apparently
	be necessary in the future.

	This experience anyhow raised a question as well.
	Should there be some sort of dependency checking added to
	kernel builds such that any missing features were implicitly
	included if other explicitly configured features depend on
	them?
	Such an extension could also make a point of informing the
	poor fool building the kernel - in this case that would have
	been me - of the features that need to be implicitly included
	as dependencies.


	Cheers,
		// jau
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