port-mips/57846: erroneous entries in ad.mips when building evbmips64-eb with MKDEBUG=yes

[logix%foobar.franken.de@localhost]

>Number:         57846
>Category:       port-mips
>Synopsis:       erroneous entries in ad.mips when building evbmips64-eb with MKDEBUG=yes
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-mips-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jan 13 14:35:00 +0000 2024
>Originator:     Harold Gutch
>Release:        NetBSD 10.0 RC2
>Organization:
>Environment:
Linux h-Precision-T3600 6.5.0-14-generic #14-Ubuntu SMP PREEMPT_DYNAMIC Tue Nov 14 14:59:49 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

(Ubuntu 23.10)
>Description:
Building evbmips64-eb with MKDEBUG=yes gets until the end where it checks the set lists, where this happens:


checkflist ===> distrib/sets
--- check_DESTDIR ---
--- checkflist ---
[...]
======  6 missing files in DESTDIR  ========
Files in flist but missing from DESTDIR.                                        
File wasn't installed ?                                                         
------------------------------------------                                      
./usr/libdata/debug/netbsd-msk0-XLSATX32.debug                                  
./usr/libdata/debug/netbsd-msk0-XLSATX64.debug                                  
./usr/libdata/debug/netbsd-sd0a-XLSATX32.debug                                  
./usr/libdata/debug/netbsd-sd0a-XLSATX64.debug                                  
./usr/libdata/debug/netbsd-wm0-XLSATX32.debug
./usr/libdata/debug/netbsd-wm0-XLSATX64.debug
========  end of 6 missing files  ==========

*** Failed target: checkflist
*** Failed commands:
        ${SETSCMD} ${.CURDIR}/checkflist  ${MAKEFLIST_FLAGS} ${CHECKFLIST_FLAGS} ${METALOG.unpriv}


The "missing files" are from src/distrib/sets/lists/debug/ad.mips and the last time this was touched was about 2 years ago:  https://mail-index.netbsd.org/source-changes/2022/01/02/msg136320.html .
>How-To-Repeat:
./build.sh -u -U -j 16 -m evbmips64-eb -O ../obj-evbmips64-eb -V MKDEBUG=yes -V MKCROSSGDB=yes tools

./build.sh -u -U -j 16 -m evbmips64-eb -O ../obj-evbmips64-eb -V MKDEBUG=yes -V MKCROSSGDB=yes release


MKCROSSGDB is probably a red herring, this is very likely to be triggered even without.  But in the off chance that this is needed, I needed the patch from misc/57841 in order to build this on Ubuntu 23.10 which comes with gcc 13.2.0.  Most likely all of this happens in any other environment too, including building this on NetBSD.
>Fix:
Yes please, ideally before the 10.0 release.