lib/58418: npf extension modules are installed as useless compatfiles and versioned symlinks

[campbell+netbsd%mumble.net@localhost]

>Number:         58418
>Category:       lib
>Synopsis:       npf extension modules are installed as useless compatfiles and versioned symlinks
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 11 14:40:01 +0000 2024
>Originator:     Taylor R Campbell
>Release:        current, 10, 9
>Organization:
The Npf386BSD Foundation
>Environment:
>Description:
npf ships with various extension modules such as ext_log and ext_rndblock.

npfctl(8) loads extension modules from `/lib/npf/ext_%s.so'.

For some reason, however, we also install versioned shlib symlinks like /lib/npf/ext_log.so.0 and /lib/npf/ext_log.so.0.0.  And userland ABI compat versions like /lib/i386/npf/ext_log.so on amd64, /lib/o32/npf/ext_log.so on mips64, &c.  These extra files are never used and should be eliminated.
>How-To-Repeat:
code inspection
>Fix:
1. set the appropriate makefile settings in src/lib/npf/mod.mk
2. update the set lists
3. figure out how to obsolete just compat entries, not the non-compat entries they're based on