Hello,
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
M E Andersson