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

[Kris Kennaway]

Jukka A. Ukkonen wrote:
> 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.

I guess you've been lucky, it's always worked this way.

> 	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.

People occasionally float the idea of doing this, but no-one has come up 
with a suitable implementation.

Kris