>Hello,
quoted text
>
>having spent most of the evening to understand why
>my kernel build suddenly aborted compilation with
>a pointer to a missing call "rt_mpath_next", I found
>that the "option SMALL_KERNEL" clashes with 
>"pseudo-device pf 1", and that this was the sole
>cause for my failure. My original reason for this
>experiment was to produce a small kernel for a
>router system.
>
>Now I am curious, are there any available documentation
>as to what features the compilation option SMALL_KERNEL
>definitely prevents? I did not succeed so far in 
>locating such a text. Of course, the man-page mentions
>that installer systems are the targets for SMALL_KERNEL,
>but for my edification I would like more particular
>information. As regards to "pf" I did an analysis of
>the source code in sys/net to find the complete explanation
>in this particular case, and the culprit is "radix_mpath.h".
>But preventing general surprises?
>
>I am greatful for all hints you can offer

use flashboot if you want to play with crunched systems...

http://www.mindrot.org/projects/flashboot/